./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 41419c8efb751929a2942e28a7b04b7973ccf691a8ed1f9bfd2cb6f75faf12af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:05:22,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:05:23,007 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:05:23,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:05:23,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:05:23,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:05:23,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:05:23,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:05:23,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:05:23,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:05:23,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:05:23,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:05:23,068 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:05:23,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:05:23,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:05:23,071 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:05:23,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:05:23,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:05:23,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:05:23,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:05:23,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:05:23,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:05:23,075 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:05:23,075 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:05:23,076 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:05:23,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:05:23,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:05:23,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:05:23,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:23,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:05:23,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:05:23,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:05:23,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:05:23,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:05:23,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:05:23,090 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:05:23,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:05:23,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:05:23,092 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:05:23,092 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_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41419c8efb751929a2942e28a7b04b7973ccf691a8ed1f9bfd2cb6f75faf12af [2023-11-06 23:05:23,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:05:23,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:05:23,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:05:23,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:05:23,498 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:05:23,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i [2023-11-06 23:05:26,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:05:26,994 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:05:26,995 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i [2023-11-06 23:05:27,028 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/data/3e76a1eff/76f299a9d6b04e9ebe4937583e51508d/FLAG92eb9b400 [2023-11-06 23:05:27,046 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/data/3e76a1eff/76f299a9d6b04e9ebe4937583e51508d [2023-11-06 23:05:27,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:05:27,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:05:27,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:27,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:05:27,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:05:27,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:27,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11849cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27, skipping insertion in model container [2023-11-06 23:05:27,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:27,151 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:05:27,325 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_90028286-b7e1-4acd-ad30-967ecf98f162/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i[916,929] [2023-11-06 23:05:27,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:27,610 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:05:27,622 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_90028286-b7e1-4acd-ad30-967ecf98f162/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i[916,929] [2023-11-06 23:05:27,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:27,780 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:05:27,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27 WrapperNode [2023-11-06 23:05:27,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:27,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:27,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:05:27,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:05:27,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:27,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:27,977 INFO L138 Inliner]: procedures = 26, calls = 108, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 759 [2023-11-06 23:05:27,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:27,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:05:27,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:05:27,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:05:27,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:27,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:28,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:28,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:28,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:28,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:28,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:28,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:28,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:05:28,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:05:28,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:05:28,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:05:28,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (1/1) ... [2023-11-06 23:05:28,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:28,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:28,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:05:28,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:05:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:05:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:05:28,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:05:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:05:28,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:05:28,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:05:28,431 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:05:28,433 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:05:29,881 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:05:29,900 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:05:29,901 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:05:29,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:29 BoogieIcfgContainer [2023-11-06 23:05:29,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:05:29,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:05:29,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:05:29,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:05:29,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:05:27" (1/3) ... [2023-11-06 23:05:29,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3bd97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:29, skipping insertion in model container [2023-11-06 23:05:29,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:27" (2/3) ... [2023-11-06 23:05:29,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3bd97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:29, skipping insertion in model container [2023-11-06 23:05:29,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:29" (3/3) ... [2023-11-06 23:05:29,919 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-89.i [2023-11-06 23:05:29,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:05:29,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:05:30,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:05:30,040 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=LoopsAndPotentialCycles, 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;@144dd8ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:05:30,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:05:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 207 states have (on average 1.6328502415458936) internal successors, (338), 208 states have internal predecessors, (338), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-06 23:05:30,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-11-06 23:05:30,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:30,106 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:30,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:30,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:30,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1691773856, now seen corresponding path program 1 times [2023-11-06 23:05:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:30,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789004329] [2023-11-06 23:05:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:30,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:30,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789004329] [2023-11-06 23:05:30,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 23:05:30,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637356289] [2023-11-06 23:05:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:30,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:30,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:30,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:30,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:05:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 23:05:31,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2023-11-06 23:05:31,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637356289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:31,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:31,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:31,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53720597] [2023-11-06 23:05:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:31,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:05:31,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:31,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:05:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:05:31,395 INFO L87 Difference]: Start difference. First operand has 305 states, 207 states have (on average 1.6328502415458936) internal successors, (338), 208 states have internal predecessors, (338), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2023-11-06 23:05:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:31,475 INFO L93 Difference]: Finished difference Result 602 states and 1143 transitions. [2023-11-06 23:05:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:05:31,478 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) Word has length 616 [2023-11-06 23:05:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:31,498 INFO L225 Difference]: With dead ends: 602 [2023-11-06 23:05:31,501 INFO L226 Difference]: Without dead ends: 300 [2023-11-06 23:05:31,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:05:31,519 INFO L413 NwaCegarLoop]: 517 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, 517 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 [2023-11-06 23:05:31,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-06 23:05:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-11-06 23:05:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 203 states have (on average 1.6108374384236452) internal successors, (327), 203 states have internal predecessors, (327), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-06 23:05:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 517 transitions. [2023-11-06 23:05:31,621 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 517 transitions. Word has length 616 [2023-11-06 23:05:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:31,622 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 517 transitions. [2023-11-06 23:05:31,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2023-11-06 23:05:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 517 transitions. [2023-11-06 23:05:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-11-06 23:05:31,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:31,644 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:31,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:31,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 23:05:31,853 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:31,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:31,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1748204212, now seen corresponding path program 1 times [2023-11-06 23:05:31,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:31,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621681105] [2023-11-06 23:05:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:31,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:32,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:32,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615420937] [2023-11-06 23:05:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:32,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:32,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:32,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:05:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:05:32,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:05:32,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:32,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:32,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621681105] [2023-11-06 23:05:32,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:32,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615420937] [2023-11-06 23:05:32,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615420937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:32,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:32,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:05:32,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746227242] [2023-11-06 23:05:32,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:32,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:32,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:32,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:32,859 INFO L87 Difference]: Start difference. First operand 300 states and 517 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:33,032 INFO L93 Difference]: Finished difference Result 767 states and 1330 transitions. [2023-11-06 23:05:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:33,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 616 [2023-11-06 23:05:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:33,047 INFO L225 Difference]: With dead ends: 767 [2023-11-06 23:05:33,047 INFO L226 Difference]: Without dead ends: 470 [2023-11-06 23:05:33,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:33,051 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 289 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:33,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1167 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:05:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-11-06 23:05:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 467. [2023-11-06 23:05:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 337 states have (on average 1.6587537091988132) internal successors, (559), 338 states have internal predecessors, (559), 127 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (127), 126 states have call predecessors, (127), 127 states have call successors, (127) [2023-11-06 23:05:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 813 transitions. [2023-11-06 23:05:33,158 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 813 transitions. Word has length 616 [2023-11-06 23:05:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:33,162 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 813 transitions. [2023-11-06 23:05:33,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 813 transitions. [2023-11-06 23:05:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2023-11-06 23:05:33,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:33,206 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:33,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:33,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:33,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:33,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1501846465, now seen corresponding path program 1 times [2023-11-06 23:05:33,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:33,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203997081] [2023-11-06 23:05:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:33,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:33,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:33,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957236003] [2023-11-06 23:05:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:33,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:33,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:33,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:33,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:05:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:34,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:05:34,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:05:34,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:34,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:34,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203997081] [2023-11-06 23:05:34,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:34,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957236003] [2023-11-06 23:05:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957236003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:34,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:34,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064446759] [2023-11-06 23:05:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:34,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:05:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:05:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:05:34,214 INFO L87 Difference]: Start difference. First operand 467 states and 813 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:34,593 INFO L93 Difference]: Finished difference Result 2043 states and 3589 transitions. [2023-11-06 23:05:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:34,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 617 [2023-11-06 23:05:34,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:34,616 INFO L225 Difference]: With dead ends: 2043 [2023-11-06 23:05:34,616 INFO L226 Difference]: Without dead ends: 1579 [2023-11-06 23:05:34,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:34,622 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 1072 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:34,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 2633 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:05:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-11-06 23:05:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1569. [2023-11-06 23:05:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1210 states have (on average 1.6925619834710743) internal successors, (2048), 1216 states have internal predecessors, (2048), 350 states have call successors, (350), 8 states have call predecessors, (350), 8 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) [2023-11-06 23:05:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2748 transitions. [2023-11-06 23:05:34,876 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2748 transitions. Word has length 617 [2023-11-06 23:05:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:34,878 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2748 transitions. [2023-11-06 23:05:34,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2748 transitions. [2023-11-06 23:05:34,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2023-11-06 23:05:34,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:34,890 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:34,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:35,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:35,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:35,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:35,099 INFO L85 PathProgramCache]: Analyzing trace with hash -421381569, now seen corresponding path program 1 times [2023-11-06 23:05:35,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:35,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723601406] [2023-11-06 23:05:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:35,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:35,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:35,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998543653] [2023-11-06 23:05:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:35,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:35,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:35,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:35,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:05:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:05:35,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:05:36,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:36,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:36,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723601406] [2023-11-06 23:05:36,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:36,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998543653] [2023-11-06 23:05:36,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998543653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:36,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:36,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:36,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878332239] [2023-11-06 23:05:36,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:36,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:36,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:36,645 INFO L87 Difference]: Start difference. First operand 1569 states and 2748 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:36,893 INFO L93 Difference]: Finished difference Result 4635 states and 8106 transitions. [2023-11-06 23:05:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:36,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 617 [2023-11-06 23:05:36,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:36,920 INFO L225 Difference]: With dead ends: 4635 [2023-11-06 23:05:36,921 INFO L226 Difference]: Without dead ends: 3069 [2023-11-06 23:05:36,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:36,928 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 246 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:36,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1246 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2023-11-06 23:05:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 3065. [2023-11-06 23:05:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 2348 states have (on average 1.6788756388415673) internal successors, (3942), 2360 states have internal predecessors, (3942), 700 states have call successors, (700), 16 states have call predecessors, (700), 16 states have return successors, (700), 688 states have call predecessors, (700), 700 states have call successors, (700) [2023-11-06 23:05:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 5342 transitions. [2023-11-06 23:05:37,333 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 5342 transitions. Word has length 617 [2023-11-06 23:05:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:37,334 INFO L495 AbstractCegarLoop]: Abstraction has 3065 states and 5342 transitions. [2023-11-06 23:05:37,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 5342 transitions. [2023-11-06 23:05:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:05:37,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:37,345 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:37,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:37,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:37,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2068974971, now seen corresponding path program 1 times [2023-11-06 23:05:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279931236] [2023-11-06 23:05:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:37,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:37,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393722478] [2023-11-06 23:05:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:37,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:37,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:37,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:37,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:05:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:38,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:05:38,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:05:38,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:38,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:38,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279931236] [2023-11-06 23:05:38,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:38,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393722478] [2023-11-06 23:05:38,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393722478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:38,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:38,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:05:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052101521] [2023-11-06 23:05:38,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:38,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:38,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:38,281 INFO L87 Difference]: Start difference. First operand 3065 states and 5342 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:38,692 INFO L93 Difference]: Finished difference Result 9157 states and 15956 transitions. [2023-11-06 23:05:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:38,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-11-06 23:05:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:38,738 INFO L225 Difference]: With dead ends: 9157 [2023-11-06 23:05:38,738 INFO L226 Difference]: Without dead ends: 6095 [2023-11-06 23:05:38,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:38,751 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 507 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:38,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1016 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2023-11-06 23:05:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 6061. [2023-11-06 23:05:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 4628 states have (on average 1.6646499567847883) internal successors, (7704), 4652 states have internal predecessors, (7704), 1400 states have call successors, (1400), 32 states have call predecessors, (1400), 32 states have return successors, (1400), 1376 states have call predecessors, (1400), 1400 states have call successors, (1400) [2023-11-06 23:05:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 10504 transitions. [2023-11-06 23:05:39,658 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 10504 transitions. Word has length 618 [2023-11-06 23:05:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:39,660 INFO L495 AbstractCegarLoop]: Abstraction has 6061 states and 10504 transitions. [2023-11-06 23:05:39,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 10504 transitions. [2023-11-06 23:05:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:05:39,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:39,675 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:39,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 23:05:39,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:39,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:39,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2070822013, now seen corresponding path program 1 times [2023-11-06 23:05:39,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:39,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876858516] [2023-11-06 23:05:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:39,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:39,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938064716] [2023-11-06 23:05:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:39,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:39,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:40,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:40,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:05:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:40,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:05:40,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:05:40,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876858516] [2023-11-06 23:05:40,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938064716] [2023-11-06 23:05:40,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938064716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:40,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:40,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:05:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831900638] [2023-11-06 23:05:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:40,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:40,608 INFO L87 Difference]: Start difference. First operand 6061 states and 10504 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:42,630 INFO L93 Difference]: Finished difference Result 26087 states and 44886 transitions. [2023-11-06 23:05:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:05:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-11-06 23:05:42,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:42,747 INFO L225 Difference]: With dead ends: 26087 [2023-11-06 23:05:42,747 INFO L226 Difference]: Without dead ends: 19775 [2023-11-06 23:05:42,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:42,769 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 1922 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:42,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 2111 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 23:05:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19775 states. [2023-11-06 23:05:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19775 to 19429. [2023-11-06 23:05:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19429 states, 14612 states have (on average 1.6322200930741857) internal successors, (23850), 14724 states have internal predecessors, (23850), 4688 states have call successors, (4688), 128 states have call predecessors, (4688), 128 states have return successors, (4688), 4576 states have call predecessors, (4688), 4688 states have call successors, (4688) [2023-11-06 23:05:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19429 states to 19429 states and 33226 transitions. [2023-11-06 23:05:45,107 INFO L78 Accepts]: Start accepts. Automaton has 19429 states and 33226 transitions. Word has length 618 [2023-11-06 23:05:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:45,108 INFO L495 AbstractCegarLoop]: Abstraction has 19429 states and 33226 transitions. [2023-11-06 23:05:45,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19429 states and 33226 transitions. [2023-11-06 23:05:45,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:05:45,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:45,129 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:45,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:45,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 23:05:45,338 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:45,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash 142983425, now seen corresponding path program 1 times [2023-11-06 23:05:45,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:45,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117238700] [2023-11-06 23:05:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:45,431 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:45,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232369111] [2023-11-06 23:05:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:45,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:45,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:45,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:45,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:05:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:05:46,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:05:46,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:46,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117238700] [2023-11-06 23:05:46,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:46,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232369111] [2023-11-06 23:05:46,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232369111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:46,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:46,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:46,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547202525] [2023-11-06 23:05:46,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:46,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:05:46,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:46,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:05:46,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:05:46,247 INFO L87 Difference]: Start difference. First operand 19429 states and 33226 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:47,445 INFO L93 Difference]: Finished difference Result 37477 states and 64019 transitions. [2023-11-06 23:05:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:05:47,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-11-06 23:05:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:47,522 INFO L225 Difference]: With dead ends: 37477 [2023-11-06 23:05:47,522 INFO L226 Difference]: Without dead ends: 18051 [2023-11-06 23:05:47,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:05:47,592 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 701 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:47,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1318 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:05:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18051 states. [2023-11-06 23:05:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18051 to 15121. [2023-11-06 23:05:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15121 states, 11840 states have (on average 1.6550675675675677) internal successors, (19596), 11888 states have internal predecessors, (19596), 3152 states have call successors, (3152), 128 states have call predecessors, (3152), 128 states have return successors, (3152), 3104 states have call predecessors, (3152), 3152 states have call successors, (3152) [2023-11-06 23:05:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15121 states to 15121 states and 25900 transitions. [2023-11-06 23:05:49,270 INFO L78 Accepts]: Start accepts. Automaton has 15121 states and 25900 transitions. Word has length 618 [2023-11-06 23:05:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:49,271 INFO L495 AbstractCegarLoop]: Abstraction has 15121 states and 25900 transitions. [2023-11-06 23:05:49,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15121 states and 25900 transitions. [2023-11-06 23:05:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:05:49,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:49,288 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:49,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:49,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 23:05:49,496 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:49,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash 565685251, now seen corresponding path program 1 times [2023-11-06 23:05:49,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:49,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257932662] [2023-11-06 23:05:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:49,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:49,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:49,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922118955] [2023-11-06 23:05:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:49,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:49,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:49,600 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:49,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:05:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:50,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:05:50,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:05:52,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:52,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:52,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257932662] [2023-11-06 23:05:52,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:52,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922118955] [2023-11-06 23:05:52,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922118955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:52,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:52,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82070360] [2023-11-06 23:05:52,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:52,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:52,488 INFO L87 Difference]: Start difference. First operand 15121 states and 25900 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:53,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:53,411 INFO L93 Difference]: Finished difference Result 36899 states and 63074 transitions. [2023-11-06 23:05:53,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:53,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-11-06 23:05:53,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:53,492 INFO L225 Difference]: With dead ends: 36899 [2023-11-06 23:05:53,492 INFO L226 Difference]: Without dead ends: 21781 [2023-11-06 23:05:53,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:53,528 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 194 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:53,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1017 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21781 states. [2023-11-06 23:05:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21781 to 21279. [2023-11-06 23:05:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21279 states, 16358 states have (on average 1.6346130333781637) internal successors, (26739), 16430 states have internal predecessors, (26739), 4728 states have call successors, (4728), 192 states have call predecessors, (4728), 192 states have return successors, (4728), 4656 states have call predecessors, (4728), 4728 states have call successors, (4728) [2023-11-06 23:05:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21279 states to 21279 states and 36195 transitions. [2023-11-06 23:05:55,789 INFO L78 Accepts]: Start accepts. Automaton has 21279 states and 36195 transitions. Word has length 618 [2023-11-06 23:05:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:55,790 INFO L495 AbstractCegarLoop]: Abstraction has 21279 states and 36195 transitions. [2023-11-06 23:05:55,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:05:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 21279 states and 36195 transitions. [2023-11-06 23:05:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:05:55,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:55,808 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:55,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:56,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:56,017 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:56,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:56,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1951888645, now seen corresponding path program 1 times [2023-11-06 23:05:56,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:56,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648839626] [2023-11-06 23:05:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:56,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:56,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:56,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422367190] [2023-11-06 23:05:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:56,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:56,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:56,117 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:56,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:05:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:56,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:05:56,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-11-06 23:05:57,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 96 proven. 186 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-11-06 23:05:57,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:57,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648839626] [2023-11-06 23:05:57,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:57,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422367190] [2023-11-06 23:05:57,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422367190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:57,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:05:57,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 23:05:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397022038] [2023-11-06 23:05:57,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:57,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:05:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:57,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:05:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:05:57,800 INFO L87 Difference]: Start difference. First operand 21279 states and 36195 transitions. Second operand has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 3 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) [2023-11-06 23:05:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:59,370 INFO L93 Difference]: Finished difference Result 34273 states and 57663 transitions. [2023-11-06 23:05:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:05:59,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 3 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) Word has length 618 [2023-11-06 23:05:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:59,422 INFO L225 Difference]: With dead ends: 34273 [2023-11-06 23:05:59,422 INFO L226 Difference]: Without dead ends: 12997 [2023-11-06 23:05:59,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1228 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:05:59,460 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 821 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:59,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 999 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:05:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12997 states. [2023-11-06 23:06:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12997 to 12709. [2023-11-06 23:06:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12709 states, 9324 states have (on average 1.5762548262548262) internal successors, (14697), 9348 states have internal predecessors, (14697), 3192 states have call successors, (3192), 192 states have call predecessors, (3192), 192 states have return successors, (3192), 3168 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-11-06 23:06:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12709 states to 12709 states and 21081 transitions. [2023-11-06 23:06:00,706 INFO L78 Accepts]: Start accepts. Automaton has 12709 states and 21081 transitions. Word has length 618 [2023-11-06 23:06:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:00,708 INFO L495 AbstractCegarLoop]: Abstraction has 12709 states and 21081 transitions. [2023-11-06 23:06:00,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 3 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) [2023-11-06 23:06:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand 12709 states and 21081 transitions. [2023-11-06 23:06:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:06:00,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:00,721 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:00,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:00,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:00,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:00,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash 520637605, now seen corresponding path program 1 times [2023-11-06 23:06:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:00,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218424641] [2023-11-06 23:06:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:00,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:01,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:01,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542679089] [2023-11-06 23:06:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:01,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:01,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:01,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:01,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:06:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:01,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:06:01,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:06:01,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218424641] [2023-11-06 23:06:01,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:01,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542679089] [2023-11-06 23:06:01,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542679089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:01,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:01,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:06:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944313941] [2023-11-06 23:06:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:01,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:06:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:06:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:01,743 INFO L87 Difference]: Start difference. First operand 12709 states and 21081 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:06:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:03,813 INFO L93 Difference]: Finished difference Result 37772 states and 62735 transitions. [2023-11-06 23:06:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:06:03,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-11-06 23:06:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:03,899 INFO L225 Difference]: With dead ends: 37772 [2023-11-06 23:06:03,899 INFO L226 Difference]: Without dead ends: 25066 [2023-11-06 23:06:03,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:06:03,934 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 675 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:03,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1735 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:06:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25066 states. [2023-11-06 23:06:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25066 to 21023. [2023-11-06 23:06:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21023 states, 16486 states have (on average 1.6182215212907922) internal successors, (26678), 16558 states have internal predecessors, (26678), 4248 states have call successors, (4248), 288 states have call predecessors, (4248), 288 states have return successors, (4248), 4176 states have call predecessors, (4248), 4248 states have call successors, (4248) [2023-11-06 23:06:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21023 states to 21023 states and 35174 transitions. [2023-11-06 23:06:05,723 INFO L78 Accepts]: Start accepts. Automaton has 21023 states and 35174 transitions. Word has length 618 [2023-11-06 23:06:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:05,725 INFO L495 AbstractCegarLoop]: Abstraction has 21023 states and 35174 transitions. [2023-11-06 23:06:05,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:06:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21023 states and 35174 transitions. [2023-11-06 23:06:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:06:05,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:05,742 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:05,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:05,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 23:06:05,952 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:05,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1907423015, now seen corresponding path program 1 times [2023-11-06 23:06:05,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:05,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013390652] [2023-11-06 23:06:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:06,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:06,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53745267] [2023-11-06 23:06:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:06,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:06,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:06,043 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:06,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:06:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:06,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:06:06,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:06:06,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:06,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:06,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013390652] [2023-11-06 23:06:06,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:06,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53745267] [2023-11-06 23:06:06,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53745267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:06,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:06,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:06:06,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910740379] [2023-11-06 23:06:06,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:06,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:06:06,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:06,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:06:06,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:06,718 INFO L87 Difference]: Start difference. First operand 21023 states and 35174 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:06:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:08,409 INFO L93 Difference]: Finished difference Result 48214 states and 81658 transitions. [2023-11-06 23:06:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:06:08,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-11-06 23:06:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:08,507 INFO L225 Difference]: With dead ends: 48214 [2023-11-06 23:06:08,507 INFO L226 Difference]: Without dead ends: 37027 [2023-11-06 23:06:08,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:08,538 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 295 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:08,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1754 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:06:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37027 states. [2023-11-06 23:06:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37027 to 36929. [2023-11-06 23:06:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36929 states, 30760 states have (on average 1.6611183355006502) internal successors, (51096), 30928 states have internal predecessors, (51096), 5784 states have call successors, (5784), 384 states have call predecessors, (5784), 384 states have return successors, (5784), 5616 states have call predecessors, (5784), 5784 states have call successors, (5784) [2023-11-06 23:06:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36929 states to 36929 states and 62664 transitions. [2023-11-06 23:06:11,236 INFO L78 Accepts]: Start accepts. Automaton has 36929 states and 62664 transitions. Word has length 618 [2023-11-06 23:06:11,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:11,237 INFO L495 AbstractCegarLoop]: Abstraction has 36929 states and 62664 transitions. [2023-11-06 23:06:11,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:06:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 36929 states and 62664 transitions. [2023-11-06 23:06:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:06:11,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:11,267 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:11,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:11,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:11,476 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:11,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:11,477 INFO L85 PathProgramCache]: Analyzing trace with hash 897499773, now seen corresponding path program 1 times [2023-11-06 23:06:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:11,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272674710] [2023-11-06 23:06:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:11,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:11,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056879294] [2023-11-06 23:06:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:11,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:11,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:11,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:06:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:12,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:06:12,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 7764 proven. 87 refuted. 0 times theorem prover too weak. 10009 trivial. 0 not checked. [2023-11-06 23:06:12,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:06:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 195 proven. 87 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-11-06 23:06:13,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272674710] [2023-11-06 23:06:13,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056879294] [2023-11-06 23:06:13,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056879294] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:06:13,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:06:13,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 23:06:13,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079369252] [2023-11-06 23:06:13,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:06:13,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:06:13,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:06:13,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:06:13,151 INFO L87 Difference]: Start difference. First operand 36929 states and 62664 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-11-06 23:06:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:15,292 INFO L93 Difference]: Finished difference Result 74671 states and 126117 transitions. [2023-11-06 23:06:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:06:15,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 618 [2023-11-06 23:06:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:15,370 INFO L225 Difference]: With dead ends: 74671 [2023-11-06 23:06:15,370 INFO L226 Difference]: Without dead ends: 37745 [2023-11-06 23:06:15,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1228 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:06:15,417 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 308 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:15,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1016 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:06:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37745 states. [2023-11-06 23:06:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37745 to 37025. [2023-11-06 23:06:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37025 states, 30832 states have (on average 1.6372599896211728) internal successors, (50480), 31000 states have internal predecessors, (50480), 5784 states have call successors, (5784), 408 states have call predecessors, (5784), 408 states have return successors, (5784), 5616 states have call predecessors, (5784), 5784 states have call successors, (5784) [2023-11-06 23:06:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37025 states to 37025 states and 62048 transitions. [2023-11-06 23:06:17,922 INFO L78 Accepts]: Start accepts. Automaton has 37025 states and 62048 transitions. Word has length 618 [2023-11-06 23:06:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:17,923 INFO L495 AbstractCegarLoop]: Abstraction has 37025 states and 62048 transitions. [2023-11-06 23:06:17,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-11-06 23:06:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 37025 states and 62048 transitions. [2023-11-06 23:06:17,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:06:17,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:17,944 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:17,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:18,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:18,153 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:18,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash -241815295, now seen corresponding path program 1 times [2023-11-06 23:06:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:18,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916326537] [2023-11-06 23:06:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:18,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:18,232 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:18,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462356879] [2023-11-06 23:06:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:18,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:18,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:18,234 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:18,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 23:06:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:18,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:06:18,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:06:18,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:18,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:18,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916326537] [2023-11-06 23:06:18,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:18,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462356879] [2023-11-06 23:06:18,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462356879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:18,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:18,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:06:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55445354] [2023-11-06 23:06:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:18,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:06:18,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:06:18,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:18,915 INFO L87 Difference]: Start difference. First operand 37025 states and 62048 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:06:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:21,398 INFO L93 Difference]: Finished difference Result 88897 states and 146894 transitions. [2023-11-06 23:06:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:06:21,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-11-06 23:06:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:21,526 INFO L225 Difference]: With dead ends: 88897 [2023-11-06 23:06:21,526 INFO L226 Difference]: Without dead ends: 51875 [2023-11-06 23:06:21,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:21,579 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 216 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:21,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1659 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:06:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51875 states. [2023-11-06 23:06:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51875 to 51849. [2023-11-06 23:06:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51849 states, 40280 states have (on average 1.5696127110228402) internal successors, (63224), 40640 states have internal predecessors, (63224), 10776 states have call successors, (10776), 792 states have call predecessors, (10776), 792 states have return successors, (10776), 10416 states have call predecessors, (10776), 10776 states have call successors, (10776) [2023-11-06 23:06:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51849 states to 51849 states and 84776 transitions. [2023-11-06 23:06:25,251 INFO L78 Accepts]: Start accepts. Automaton has 51849 states and 84776 transitions. Word has length 618 [2023-11-06 23:06:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:25,252 INFO L495 AbstractCegarLoop]: Abstraction has 51849 states and 84776 transitions. [2023-11-06 23:06:25,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-11-06 23:06:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 51849 states and 84776 transitions. [2023-11-06 23:06:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:06:25,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:25,280 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:25,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:25,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 23:06:25,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:25,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1447128447, now seen corresponding path program 1 times [2023-11-06 23:06:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:25,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013418747] [2023-11-06 23:06:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:25,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:25,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:25,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473113549] [2023-11-06 23:06:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:25,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:25,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:25,787 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:25,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 23:06:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:26,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:06:26,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 2382 proven. 18 refuted. 0 times theorem prover too weak. 15460 trivial. 0 not checked. [2023-11-06 23:06:26,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:06:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 264 proven. 18 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-11-06 23:06:27,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:27,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013418747] [2023-11-06 23:06:27,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:27,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473113549] [2023-11-06 23:06:27,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473113549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:06:27,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:06:27,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 23:06:27,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616209986] [2023-11-06 23:06:27,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:06:27,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:06:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:27,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:06:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:06:27,087 INFO L87 Difference]: Start difference. First operand 51849 states and 84776 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-06 23:06:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:30,535 INFO L93 Difference]: Finished difference Result 105231 states and 171061 transitions. [2023-11-06 23:06:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:06:30,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 618 [2023-11-06 23:06:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:30,677 INFO L225 Difference]: With dead ends: 105231 [2023-11-06 23:06:30,677 INFO L226 Difference]: Without dead ends: 53385 [2023-11-06 23:06:30,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1228 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:06:30,767 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 343 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:30,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1020 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:06:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53385 states. [2023-11-06 23:06:34,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53385 to 51945. [2023-11-06 23:06:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51945 states, 40352 states have (on average 1.560071371927042) internal successors, (62952), 40712 states have internal predecessors, (62952), 10776 states have call successors, (10776), 816 states have call predecessors, (10776), 816 states have return successors, (10776), 10416 states have call predecessors, (10776), 10776 states have call successors, (10776) [2023-11-06 23:06:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51945 states to 51945 states and 84504 transitions. [2023-11-06 23:06:34,791 INFO L78 Accepts]: Start accepts. Automaton has 51945 states and 84504 transitions. Word has length 618 [2023-11-06 23:06:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:34,792 INFO L495 AbstractCegarLoop]: Abstraction has 51945 states and 84504 transitions. [2023-11-06 23:06:34,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-06 23:06:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 51945 states and 84504 transitions. [2023-11-06 23:06:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-06 23:06:34,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:34,820 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:34,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-06 23:06:35,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:06:35,034 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:35,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:35,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1313114941, now seen corresponding path program 1 times [2023-11-06 23:06:35,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:35,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423867410] [2023-11-06 23:06:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:35,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:35,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:35,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180673630] [2023-11-06 23:06:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:35,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:35,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:35,138 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:35,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90028286-b7e1-4acd-ad30-967ecf98f162/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 23:06:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:35,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:06:35,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-11-06 23:06:35,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423867410] [2023-11-06 23:06:35,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180673630] [2023-11-06 23:06:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180673630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:06:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409641222] [2023-11-06 23:06:35,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:35,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:06:35,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:06:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:35,890 INFO L87 Difference]: Start difference. First operand 51945 states and 84504 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95)