./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.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_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/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_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/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_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/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 6d70d056c1185c197829b20726e7e8c352a9989b4edbacd554399a50d7e882a4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:09:18,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:09:18,388 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:09:18,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:09:18,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:09:18,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:09:18,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:09:18,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:09:18,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:09:18,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:09:18,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:09:18,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:09:18,426 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:09:18,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:09:18,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:09:18,429 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:09:18,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:09:18,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:09:18,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:09:18,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:09:18,431 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:09:18,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:09:18,433 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:09:18,433 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:09:18,434 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:09:18,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:09:18,435 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:09:18,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:09:18,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:18,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:09:18,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:09:18,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:09:18,439 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:09:18,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:09:18,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:09:18,441 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:09:18,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:09:18,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:09:18,442 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:09:18,443 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_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d70d056c1185c197829b20726e7e8c352a9989b4edbacd554399a50d7e882a4 [2023-11-06 22:09:18,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:09:18,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:09:18,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:09:18,727 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:09:18,727 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:09:18,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i [2023-11-06 22:09:21,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:09:22,198 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:09:22,199 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i [2023-11-06 22:09:22,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/data/764d5c544/90970ba0f2ed4e9eb03cbcc9a250edd4/FLAG534c4ef2b [2023-11-06 22:09:22,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/data/764d5c544/90970ba0f2ed4e9eb03cbcc9a250edd4 [2023-11-06 22:09:22,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:09:22,256 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:09:22,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:22,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:09:22,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:09:22,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:22,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f389cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22, skipping insertion in model container [2023-11-06 22:09:22,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:22,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:09:22,526 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_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i[916,929] [2023-11-06 22:09:22,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:22,780 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:09:22,804 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_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i[916,929] [2023-11-06 22:09:22,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:22,965 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:09:22,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22 WrapperNode [2023-11-06 22:09:22,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:22,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:22,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:09:22,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:09:22,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,107 INFO L138 Inliner]: procedures = 26, calls = 122, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 884 [2023-11-06 22:09:23,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:23,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:09:23,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:09:23,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:09:23,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,171 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:09:23,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:09:23,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:09:23,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:09:23,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2023-11-06 22:09:23,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:23,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:23,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:09:23,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:09:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:09:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:09:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:09:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:09:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:09:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:09:23,523 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:09:23,525 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:09:24,709 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:09:24,719 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:09:24,720 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:09:24,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:24 BoogieIcfgContainer [2023-11-06 22:09:24,722 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:09:24,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:09:24,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:09:24,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:09:24,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:09:22" (1/3) ... [2023-11-06 22:09:24,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3041c265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:24, skipping insertion in model container [2023-11-06 22:09:24,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (2/3) ... [2023-11-06 22:09:24,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3041c265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:24, skipping insertion in model container [2023-11-06 22:09:24,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:24" (3/3) ... [2023-11-06 22:09:24,731 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-61.i [2023-11-06 22:09:24,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:09:24,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:09:24,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:09:24,841 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;@72498c62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:09:24,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:09:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 242 states have (on average 1.6528925619834711) internal successors, (400), 243 states have internal predecessors, (400), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-06 22:09:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-06 22:09:24,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:24,920 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:24,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:24,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:24,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1781175182, now seen corresponding path program 1 times [2023-11-06 22:09:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:24,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310458894] [2023-11-06 22:09:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:25,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:25,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30589141] [2023-11-06 22:09:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:25,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:25,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:25,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:09:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:26,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:09:26,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-06 22:09:26,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:26,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310458894] [2023-11-06 22:09:26,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30589141] [2023-11-06 22:09:26,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30589141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:26,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:26,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470287966] [2023-11-06 22:09:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:26,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:26,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:26,321 INFO L87 Difference]: Start difference. First operand has 354 states, 242 states have (on average 1.6528925619834711) internal successors, (400), 243 states have internal predecessors, (400), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:26,504 INFO L93 Difference]: Finished difference Result 701 states and 1339 transitions. [2023-11-06 22:09:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:26,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2023-11-06 22:09:26,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:26,538 INFO L225 Difference]: With dead ends: 701 [2023-11-06 22:09:26,538 INFO L226 Difference]: Without dead ends: 350 [2023-11-06 22:09:26,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 696 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 22:09:26,554 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 31 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:26,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1175 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:09:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-06 22:09:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2023-11-06 22:09:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 239 states have (on average 1.6234309623430963) internal successors, (388), 239 states have internal predecessors, (388), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-06 22:09:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 606 transitions. [2023-11-06 22:09:26,680 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 606 transitions. Word has length 698 [2023-11-06 22:09:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:26,684 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 606 transitions. [2023-11-06 22:09:26,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 606 transitions. [2023-11-06 22:09:26,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-06 22:09:26,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:26,706 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:26,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:26,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:09:26,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:26,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 92231440, now seen corresponding path program 1 times [2023-11-06 22:09:26,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:26,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158041925] [2023-11-06 22:09:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:26,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:27,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:27,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202731229] [2023-11-06 22:09:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:27,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:27,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:27,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:09:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:27,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:09:27,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-06 22:09:27,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158041925] [2023-11-06 22:09:27,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202731229] [2023-11-06 22:09:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202731229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:27,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:27,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377422978] [2023-11-06 22:09:27,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:27,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:27,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:27,803 INFO L87 Difference]: Start difference. First operand 350 states and 606 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:27,978 INFO L93 Difference]: Finished difference Result 888 states and 1542 transitions. [2023-11-06 22:09:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:27,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2023-11-06 22:09:27,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:27,992 INFO L225 Difference]: With dead ends: 888 [2023-11-06 22:09:27,992 INFO L226 Difference]: Without dead ends: 541 [2023-11-06 22:09:28,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 696 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 22:09:28,012 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 326 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:28,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1472 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:09:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-11-06 22:09:28,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 538. [2023-11-06 22:09:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 394 states have (on average 1.6598984771573604) internal successors, (654), 395 states have internal predecessors, (654), 141 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (141), 140 states have call predecessors, (141), 141 states have call successors, (141) [2023-11-06 22:09:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 936 transitions. [2023-11-06 22:09:28,113 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 936 transitions. Word has length 698 [2023-11-06 22:09:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:28,116 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 936 transitions. [2023-11-06 22:09:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 936 transitions. [2023-11-06 22:09:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-06 22:09:28,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:28,142 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:28,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:28,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:09:28,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:28,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash -400394734, now seen corresponding path program 1 times [2023-11-06 22:09:28,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:28,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469599929] [2023-11-06 22:09:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:28,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:28,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:28,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411418360] [2023-11-06 22:09:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:28,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:28,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:28,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:28,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:09:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:28,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:09:28,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-06 22:09:30,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:30,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469599929] [2023-11-06 22:09:30,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411418360] [2023-11-06 22:09:30,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411418360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:30,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:30,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:09:30,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615100324] [2023-11-06 22:09:30,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:30,090 INFO L87 Difference]: Start difference. First operand 538 states and 936 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:30,165 INFO L93 Difference]: Finished difference Result 1608 states and 2802 transitions. [2023-11-06 22:09:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:30,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2023-11-06 22:09:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:30,178 INFO L225 Difference]: With dead ends: 1608 [2023-11-06 22:09:30,178 INFO L226 Difference]: Without dead ends: 1073 [2023-11-06 22:09:30,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 696 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 22:09:30,184 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 289 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:30,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1200 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:09:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-11-06 22:09:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1069. [2023-11-06 22:09:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 782 states have (on average 1.659846547314578) internal successors, (1298), 784 states have internal predecessors, (1298), 282 states have call successors, (282), 4 states have call predecessors, (282), 4 states have return successors, (282), 280 states have call predecessors, (282), 282 states have call successors, (282) [2023-11-06 22:09:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1862 transitions. [2023-11-06 22:09:30,384 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1862 transitions. Word has length 698 [2023-11-06 22:09:30,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:30,386 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1862 transitions. [2023-11-06 22:09:30,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1862 transitions. [2023-11-06 22:09:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-06 22:09:30,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:30,395 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:30,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:30,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:30,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:30,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash -198570800, now seen corresponding path program 1 times [2023-11-06 22:09:30,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:30,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672838438] [2023-11-06 22:09:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:30,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:30,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:30,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805216925] [2023-11-06 22:09:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:30,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:30,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:30,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:30,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:09:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:31,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:09:31,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-06 22:09:31,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672838438] [2023-11-06 22:09:31,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:31,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805216925] [2023-11-06 22:09:31,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805216925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:31,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:31,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:31,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189536757] [2023-11-06 22:09:31,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:31,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:31,326 INFO L87 Difference]: Start difference. First operand 1069 states and 1862 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:31,463 INFO L93 Difference]: Finished difference Result 2943 states and 5144 transitions. [2023-11-06 22:09:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:31,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2023-11-06 22:09:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:31,479 INFO L225 Difference]: With dead ends: 2943 [2023-11-06 22:09:31,479 INFO L226 Difference]: Without dead ends: 1877 [2023-11-06 22:09:31,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 696 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 22:09:31,503 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 371 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:31,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1173 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:09:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2023-11-06 22:09:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1873. [2023-11-06 22:09:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1446 states have (on average 1.677731673582296) internal successors, (2426), 1452 states have internal predecessors, (2426), 418 states have call successors, (418), 8 states have call predecessors, (418), 8 states have return successors, (418), 412 states have call predecessors, (418), 418 states have call successors, (418) [2023-11-06 22:09:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3262 transitions. [2023-11-06 22:09:31,718 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3262 transitions. Word has length 698 [2023-11-06 22:09:31,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:31,719 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3262 transitions. [2023-11-06 22:09:31,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3262 transitions. [2023-11-06 22:09:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2023-11-06 22:09:31,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:31,729 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:31,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:31,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:31,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:31,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1582061754, now seen corresponding path program 1 times [2023-11-06 22:09:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394557715] [2023-11-06 22:09:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:32,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:32,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882552178] [2023-11-06 22:09:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:32,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:32,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:32,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:32,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:09:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:32,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:09:32,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-06 22:09:32,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:32,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394557715] [2023-11-06 22:09:32,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:32,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882552178] [2023-11-06 22:09:32,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882552178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:32,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:32,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:32,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338496194] [2023-11-06 22:09:32,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:32,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:32,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:32,703 INFO L87 Difference]: Start difference. First operand 1873 states and 3262 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:32,929 INFO L93 Difference]: Finished difference Result 5581 states and 9716 transitions. [2023-11-06 22:09:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:32,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 699 [2023-11-06 22:09:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:32,961 INFO L225 Difference]: With dead ends: 5581 [2023-11-06 22:09:32,962 INFO L226 Difference]: Without dead ends: 3711 [2023-11-06 22:09:32,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 697 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 22:09:32,970 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 566 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:32,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:09:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2023-11-06 22:09:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3709. [2023-11-06 22:09:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 2856 states have (on average 1.669467787114846) internal successors, (4768), 2868 states have internal predecessors, (4768), 836 states have call successors, (836), 16 states have call predecessors, (836), 16 states have return successors, (836), 824 states have call predecessors, (836), 836 states have call successors, (836) [2023-11-06 22:09:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 6440 transitions. [2023-11-06 22:09:33,438 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 6440 transitions. Word has length 699 [2023-11-06 22:09:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:33,439 INFO L495 AbstractCegarLoop]: Abstraction has 3709 states and 6440 transitions. [2023-11-06 22:09:33,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 6440 transitions. [2023-11-06 22:09:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2023-11-06 22:09:33,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:33,474 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:33,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:33,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:33,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:33,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1441513144, now seen corresponding path program 1 times [2023-11-06 22:09:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:33,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040039103] [2023-11-06 22:09:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:33,779 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:33,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753982092] [2023-11-06 22:09:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:33,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:33,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:33,781 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:33,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:09:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:34,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:09:34,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-06 22:09:34,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:34,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:34,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040039103] [2023-11-06 22:09:34,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:34,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753982092] [2023-11-06 22:09:34,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753982092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:34,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:34,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:34,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392571054] [2023-11-06 22:09:34,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:34,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:34,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:34,339 INFO L87 Difference]: Start difference. First operand 3709 states and 6440 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:34,769 INFO L93 Difference]: Finished difference Result 11121 states and 19314 transitions. [2023-11-06 22:09:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:34,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 699 [2023-11-06 22:09:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:34,824 INFO L225 Difference]: With dead ends: 11121 [2023-11-06 22:09:34,824 INFO L226 Difference]: Without dead ends: 7415 [2023-11-06 22:09:34,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 697 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 22:09:34,839 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 596 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:34,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1202 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:09:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7415 states. [2023-11-06 22:09:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7415 to 7413. [2023-11-06 22:09:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 5708 states have (on average 1.6643307638402243) internal successors, (9500), 5732 states have internal predecessors, (9500), 1672 states have call successors, (1672), 32 states have call predecessors, (1672), 32 states have return successors, (1672), 1648 states have call predecessors, (1672), 1672 states have call successors, (1672) [2023-11-06 22:09:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 12844 transitions. [2023-11-06 22:09:35,869 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 12844 transitions. Word has length 699 [2023-11-06 22:09:35,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:35,870 INFO L495 AbstractCegarLoop]: Abstraction has 7413 states and 12844 transitions. [2023-11-06 22:09:35,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 12844 transitions. [2023-11-06 22:09:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2023-11-06 22:09:35,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:35,882 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:35,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:36,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:36,092 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:36,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash 363925190, now seen corresponding path program 1 times [2023-11-06 22:09:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:36,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058998817] [2023-11-06 22:09:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:36,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:36,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:36,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883420194] [2023-11-06 22:09:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:36,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:36,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:36,211 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:36,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:09:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:36,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:09:36,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-06 22:09:37,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:37,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058998817] [2023-11-06 22:09:37,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883420194] [2023-11-06 22:09:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883420194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:37,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:09:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359172563] [2023-11-06 22:09:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:37,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:09:37,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:37,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:09:37,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:37,027 INFO L87 Difference]: Start difference. First operand 7413 states and 12844 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:46,118 INFO L93 Difference]: Finished difference Result 70495 states and 121989 transitions. [2023-11-06 22:09:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:09:46,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 699 [2023-11-06 22:09:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:46,542 INFO L225 Difference]: With dead ends: 70495 [2023-11-06 22:09:46,542 INFO L226 Difference]: Without dead ends: 63085 [2023-11-06 22:09:46,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:09:46,595 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 4574 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 1592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4574 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1592 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:46,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4574 Valid, 5724 Invalid, 4221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1592 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:09:46,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63085 states. [2023-11-06 22:09:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63085 to 42653. [2023-11-06 22:09:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42653 states, 33404 states have (on average 1.6595617291342355) internal successors, (55436), 33580 states have internal predecessors, (55436), 9040 states have call successors, (9040), 208 states have call predecessors, (9040), 208 states have return successors, (9040), 8864 states have call predecessors, (9040), 9040 states have call successors, (9040) [2023-11-06 22:09:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42653 states to 42653 states and 73516 transitions. [2023-11-06 22:09:53,351 INFO L78 Accepts]: Start accepts. Automaton has 42653 states and 73516 transitions. Word has length 699 [2023-11-06 22:09:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:09:53,353 INFO L495 AbstractCegarLoop]: Abstraction has 42653 states and 73516 transitions. [2023-11-06 22:09:53,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-06 22:09:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 42653 states and 73516 transitions. [2023-11-06 22:09:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2023-11-06 22:09:53,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:09:53,386 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:53,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:53,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:09:53,596 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:09:53,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 787571912, now seen corresponding path program 1 times [2023-11-06 22:09:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:53,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814121318] [2023-11-06 22:09:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:53,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:53,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276222072] [2023-11-06 22:09:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:53,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:53,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:53,700 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:53,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:09:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:54,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:09:54,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 8340 proven. 72 refuted. 0 times theorem prover too weak. 15132 trivial. 0 not checked. [2023-11-06 22:09:54,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 252 proven. 72 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-06 22:09:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814121318] [2023-11-06 22:09:55,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276222072] [2023-11-06 22:09:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276222072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:55,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:09:55,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:09:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140562388] [2023-11-06 22:09:55,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:55,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:09:55,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:55,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:09:55,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:55,129 INFO L87 Difference]: Start difference. First operand 42653 states and 73516 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-11-06 22:09:59,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:09:59,526 INFO L93 Difference]: Finished difference Result 85911 states and 147605 transitions. [2023-11-06 22:09:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:09:59,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 699 [2023-11-06 22:09:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:09:59,706 INFO L225 Difference]: With dead ends: 85911 [2023-11-06 22:09:59,706 INFO L226 Difference]: Without dead ends: 43261 [2023-11-06 22:09:59,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1400 GetRequests, 1390 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 22:09:59,792 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 698 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:09:59,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1257 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:09:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43261 states. [2023-11-06 22:10:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43261 to 42781. [2023-11-06 22:10:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42781 states, 33500 states have (on average 1.6519402985074627) internal successors, (55340), 33676 states have internal predecessors, (55340), 9040 states have call successors, (9040), 240 states have call predecessors, (9040), 240 states have return successors, (9040), 8864 states have call predecessors, (9040), 9040 states have call successors, (9040) [2023-11-06 22:10:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42781 states to 42781 states and 73420 transitions. [2023-11-06 22:10:04,543 INFO L78 Accepts]: Start accepts. Automaton has 42781 states and 73420 transitions. Word has length 699 [2023-11-06 22:10:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:10:04,544 INFO L495 AbstractCegarLoop]: Abstraction has 42781 states and 73420 transitions. [2023-11-06 22:10:04,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-11-06 22:10:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 42781 states and 73420 transitions. [2023-11-06 22:10:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2023-11-06 22:10:04,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:10:04,576 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:04,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:04,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:10:04,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:10:04,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:04,788 INFO L85 PathProgramCache]: Analyzing trace with hash 849611526, now seen corresponding path program 1 times [2023-11-06 22:10:04,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:04,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505419580] [2023-11-06 22:10:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:04,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:04,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:10:04,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339062943] [2023-11-06 22:10:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:04,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:04,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:04,871 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:04,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea2f4ab0-e74e-43d3-bdcb-d88e0f475098/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:10:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:05,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:10:05,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11230 proven. 123 refuted. 0 times theorem prover too weak. 12191 trivial. 0 not checked. [2023-11-06 22:10:06,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 201 proven. 123 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-06 22:10:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505419580] [2023-11-06 22:10:07,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:10:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339062943] [2023-11-06 22:10:07,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339062943] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:07,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:10:07,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-11-06 22:10:07,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047547033] [2023-11-06 22:10:07,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:07,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:10:07,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:10:07,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:10:07,031 INFO L87 Difference]: Start difference. First operand 42781 states and 73420 transitions. Second operand has 16 states, 16 states have (on average 14.8125) internal successors, (237), 16 states have internal predecessors, (237), 3 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) [2023-11-06 22:10:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:10:26,561 INFO L93 Difference]: Finished difference Result 244161 states and 414974 transitions. [2023-11-06 22:10:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-06 22:10:26,562 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.8125) internal successors, (237), 16 states have internal predecessors, (237), 3 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) Word has length 699 [2023-11-06 22:10:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:10:27,388 INFO L225 Difference]: With dead ends: 244161 [2023-11-06 22:10:27,388 INFO L226 Difference]: Without dead ends: 201383 [2023-11-06 22:10:27,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1452 GetRequests, 1389 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=900, Invalid=3260, Unknown=0, NotChecked=0, Total=4160 [2023-11-06 22:10:27,496 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 4387 mSDsluCounter, 4243 mSDsCounter, 0 mSdLazyCounter, 3928 mSolverCounterSat, 1447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4570 SdHoareTripleChecker+Valid, 4975 SdHoareTripleChecker+Invalid, 5375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1447 IncrementalHoareTripleChecker+Valid, 3928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:10:27,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4570 Valid, 4975 Invalid, 5375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1447 Valid, 3928 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:10:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201383 states.