./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-28.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 458a3abf556bd9bffc0532b3c98efa5ab89d05f5a4e80738a42f6147ca1f834c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:03,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:03,210 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:04:03,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:03,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:03,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:03,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:03,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:03,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:03,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:03,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:03,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:03,272 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:03,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:03,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:03,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:03,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:03,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:03,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:03,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:03,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:03,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:03,279 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:03,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:03,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:03,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:03,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:03,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:03,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:03,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:03,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:03,285 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:03,285 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:03,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:03,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:03,287 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:03,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:03,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:03,289 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:03,290 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_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 458a3abf556bd9bffc0532b3c98efa5ab89d05f5a4e80738a42f6147ca1f834c [2023-11-19 08:04:03,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:03,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:03,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:03,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:03,690 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:03,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-28.i [2023-11-19 08:04:06,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:07,356 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:07,357 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-28.i [2023-11-19 08:04:07,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/data/09d295196/6ca82a7afb57497997c00049d294c74c/FLAG218362912 [2023-11-19 08:04:07,395 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/data/09d295196/6ca82a7afb57497997c00049d294c74c [2023-11-19 08:04:07,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:07,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:07,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:07,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:07,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:07,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:07" (1/1) ... [2023-11-19 08:04:07,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc69cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:07, skipping insertion in model container [2023-11-19 08:04:07,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:07" (1/1) ... [2023-11-19 08:04:07,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:07,693 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_dec0fc65-47e2-45f7-938a-b093fda01974/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-28.i[916,929] [2023-11-19 08:04:07,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:07,921 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:07,934 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_dec0fc65-47e2-45f7-938a-b093fda01974/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-28.i[916,929] [2023-11-19 08:04:08,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:08,062 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:08,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08 WrapperNode [2023-11-19 08:04:08,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:08,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:08,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:08,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:08,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,180 INFO L138 Inliner]: procedures = 26, calls = 114, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 636 [2023-11-19 08:04:08,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:08,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:08,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:08,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:08,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:08,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:08,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:08,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:08,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:08,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:08,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:08,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:04:08,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:04:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:08,728 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:08,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:10,014 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:10,039 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:10,039 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:04:10,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:10 BoogieIcfgContainer [2023-11-19 08:04:10,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:10,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:10,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:10,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:10,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:07" (1/3) ... [2023-11-19 08:04:10,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20be8183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:10, skipping insertion in model container [2023-11-19 08:04:10,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (2/3) ... [2023-11-19 08:04:10,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20be8183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:10, skipping insertion in model container [2023-11-19 08:04:10,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:10" (3/3) ... [2023-11-19 08:04:10,067 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-28.i [2023-11-19 08:04:10,093 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:10,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:04:10,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:10,252 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@630f6cf1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:10,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:04:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 160 states have (on average 1.50625) internal successors, (241), 161 states have internal predecessors, (241), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 08:04:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-19 08:04:10,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:10,339 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:10,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:10,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1393568928, now seen corresponding path program 1 times [2023-11-19 08:04:10,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:10,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130175828] [2023-11-19 08:04:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:11,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:11,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130175828] [2023-11-19 08:04:11,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:04:11,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492230544] [2023-11-19 08:04:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:11,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:11,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:11,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:11,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:04:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:11,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:04:11,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 20000 trivial. 0 not checked. [2023-11-19 08:04:11,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:11,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492230544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:11,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:11,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:11,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715231598] [2023-11-19 08:04:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:11,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:04:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:11,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:04:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:11,972 INFO L87 Difference]: Start difference. First operand has 264 states, 160 states have (on average 1.50625) internal successors, (241), 161 states have internal predecessors, (241), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) [2023-11-19 08:04:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:12,060 INFO L93 Difference]: Finished difference Result 521 states and 981 transitions. [2023-11-19 08:04:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:04:12,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) Word has length 614 [2023-11-19 08:04:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:12,079 INFO L225 Difference]: With dead ends: 521 [2023-11-19 08:04:12,079 INFO L226 Difference]: Without dead ends: 260 [2023-11-19 08:04:12,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:12,094 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:12,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-19 08:04:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-19 08:04:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 157 states have (on average 1.4904458598726114) internal successors, (234), 157 states have internal predecessors, (234), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 08:04:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 436 transitions. [2023-11-19 08:04:12,228 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 436 transitions. Word has length 614 [2023-11-19 08:04:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:12,229 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 436 transitions. [2023-11-19 08:04:12,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) [2023-11-19 08:04:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 436 transitions. [2023-11-19 08:04:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-19 08:04:12,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:12,253 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:12,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:12,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:04:12,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:12,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash -781539614, now seen corresponding path program 1 times [2023-11-19 08:04:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:12,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381224345] [2023-11-19 08:04:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:12,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:12,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906384679] [2023-11-19 08:04:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:12,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:12,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:12,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:12,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:04:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:13,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:04:13,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-11-19 08:04:13,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:13,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381224345] [2023-11-19 08:04:13,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:13,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906384679] [2023-11-19 08:04:13,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906384679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:13,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:13,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:13,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603900694] [2023-11-19 08:04:13,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:13,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:13,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:13,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:13,538 INFO L87 Difference]: Start difference. First operand 260 states and 436 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-11-19 08:04:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:13,724 INFO L93 Difference]: Finished difference Result 691 states and 1153 transitions. [2023-11-19 08:04:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:13,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 614 [2023-11-19 08:04:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:13,747 INFO L225 Difference]: With dead ends: 691 [2023-11-19 08:04:13,747 INFO L226 Difference]: Without dead ends: 434 [2023-11-19 08:04:13,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:13,754 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 279 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:13,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 857 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-19 08:04:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2023-11-19 08:04:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 251 states have (on average 1.4462151394422311) internal successors, (363), 252 states have internal predecessors, (363), 177 states have call successors, (177), 2 states have call predecessors, (177), 2 states have return successors, (177), 176 states have call predecessors, (177), 177 states have call successors, (177) [2023-11-19 08:04:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 717 transitions. [2023-11-19 08:04:13,882 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 717 transitions. Word has length 614 [2023-11-19 08:04:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:13,886 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 717 transitions. [2023-11-19 08:04:13,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-11-19 08:04:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 717 transitions. [2023-11-19 08:04:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-19 08:04:13,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:13,910 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:13,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:14,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:14,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:14,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1707989348, now seen corresponding path program 1 times [2023-11-19 08:04:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:14,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185559955] [2023-11-19 08:04:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:14,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:14,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141112157] [2023-11-19 08:04:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:14,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:14,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:14,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:14,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:04:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:14,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 08:04:14,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-11-19 08:04:31,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:31,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:31,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185559955] [2023-11-19 08:04:31,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:31,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141112157] [2023-11-19 08:04:31,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141112157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:31,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:31,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:04:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620592207] [2023-11-19 08:04:31,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:31,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:04:31,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:31,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:04:31,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:04:31,157 INFO L87 Difference]: Start difference. First operand 431 states and 717 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-11-19 08:04:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:33,704 INFO L93 Difference]: Finished difference Result 1467 states and 2403 transitions. [2023-11-19 08:04:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 08:04:33,706 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 614 [2023-11-19 08:04:33,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:33,726 INFO L225 Difference]: With dead ends: 1467 [2023-11-19 08:04:33,727 INFO L226 Difference]: Without dead ends: 1039 [2023-11-19 08:04:33,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:04:33,733 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 709 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:33,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2011 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 08:04:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-11-19 08:04:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 902. [2023-11-19 08:04:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 533 states have (on average 1.4352720450281427) internal successors, (765), 536 states have internal predecessors, (765), 362 states have call successors, (362), 6 states have call predecessors, (362), 6 states have return successors, (362), 359 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-19 08:04:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1489 transitions. [2023-11-19 08:04:33,987 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1489 transitions. Word has length 614 [2023-11-19 08:04:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:33,989 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1489 transitions. [2023-11-19 08:04:33,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-11-19 08:04:33,990 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1489 transitions. [2023-11-19 08:04:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-19 08:04:33,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:33,999 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:34,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:34,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:34,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:34,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:34,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1314962338, now seen corresponding path program 1 times [2023-11-19 08:04:34,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:34,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75719248] [2023-11-19 08:04:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:34,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:34,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:34,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678986547] [2023-11-19 08:04:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:34,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:34,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:34,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:34,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:04:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:34,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:04:34,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-11-19 08:04:35,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:35,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:35,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75719248] [2023-11-19 08:04:35,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:35,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678986547] [2023-11-19 08:04:35,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678986547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:35,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:35,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:35,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593635282] [2023-11-19 08:04:35,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:35,988 INFO L87 Difference]: Start difference. First operand 902 states and 1489 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-11-19 08:04:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:37,140 INFO L93 Difference]: Finished difference Result 2318 states and 3816 transitions. [2023-11-19 08:04:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 614 [2023-11-19 08:04:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:37,159 INFO L225 Difference]: With dead ends: 2318 [2023-11-19 08:04:37,159 INFO L226 Difference]: Without dead ends: 1432 [2023-11-19 08:04:37,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:04:37,171 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 994 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:37,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1711 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 08:04:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-11-19 08:04:37,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1046. [2023-11-19 08:04:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 599 states have (on average 1.3956594323873122) internal successors, (836), 603 states have internal predecessors, (836), 438 states have call successors, (438), 8 states have call predecessors, (438), 8 states have return successors, (438), 434 states have call predecessors, (438), 438 states have call successors, (438) [2023-11-19 08:04:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1712 transitions. [2023-11-19 08:04:37,467 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1712 transitions. Word has length 614 [2023-11-19 08:04:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:37,470 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1712 transitions. [2023-11-19 08:04:37,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-11-19 08:04:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1712 transitions. [2023-11-19 08:04:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-19 08:04:37,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:37,480 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:37,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 08:04:37,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:37,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:37,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash 505615712, now seen corresponding path program 1 times [2023-11-19 08:04:37,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:37,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112793750] [2023-11-19 08:04:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:37,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:37,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872833233] [2023-11-19 08:04:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:37,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:37,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:37,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:37,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:04:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:38,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 08:04:38,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-11-19 08:04:47,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:47,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112793750] [2023-11-19 08:04:47,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872833233] [2023-11-19 08:04:47,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872833233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:47,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:47,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:04:47,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15871267] [2023-11-19 08:04:47,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:47,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:04:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:04:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:04:47,067 INFO L87 Difference]: Start difference. First operand 1046 states and 1712 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-11-19 08:04:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:48,576 INFO L93 Difference]: Finished difference Result 2363 states and 3806 transitions. [2023-11-19 08:04:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:04:48,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 614 [2023-11-19 08:04:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:48,589 INFO L225 Difference]: With dead ends: 2363 [2023-11-19 08:04:48,589 INFO L226 Difference]: Without dead ends: 1333 [2023-11-19 08:04:48,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:04:48,595 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 232 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:48,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1437 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:04:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-11-19 08:04:48,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1162. [2023-11-19 08:04:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 697 states have (on average 1.39454806312769) internal successors, (972), 703 states have internal predecessors, (972), 454 states have call successors, (454), 10 states have call predecessors, (454), 10 states have return successors, (454), 448 states have call predecessors, (454), 454 states have call successors, (454) [2023-11-19 08:04:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1880 transitions. [2023-11-19 08:04:48,831 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1880 transitions. Word has length 614 [2023-11-19 08:04:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:48,832 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1880 transitions. [2023-11-19 08:04:48,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-11-19 08:04:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1880 transitions. [2023-11-19 08:04:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-19 08:04:48,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:48,840 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:48,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:49,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:49,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:49,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash 696872098, now seen corresponding path program 1 times [2023-11-19 08:04:49,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:49,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579527169] [2023-11-19 08:04:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:49,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:49,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:49,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506870664] [2023-11-19 08:04:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:49,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:49,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:49,179 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:49,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec0fc65-47e2-45f7-938a-b093fda01974/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:04:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:49,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:04:49,611 INFO L285 TraceCheckSpWp]: Computing forward predicates...