./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_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_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/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_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/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_8389253d-453f-4d96-aa73-fd580ebbbd23/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 19cc8c12b97d00c18bd753d2c40678eb07734cfb5a01e7b7c6c980ae83e69a6f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:33,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:33,920 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:41:33,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:33,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:33,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:33,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:33,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:33,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:33,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:33,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:33,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:33,974 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:33,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:33,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:41:33,977 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:41:33,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:33,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:41:33,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:33,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:41:33,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:33,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:41:33,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:41:33,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:33,983 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:33,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:33,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:33,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:33,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:33,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:33,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:33,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:41:33,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:33,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:33,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:33,989 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:41:33,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:33,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:33,990 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:33,990 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_8389253d-453f-4d96-aa73-fd580ebbbd23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19cc8c12b97d00c18bd753d2c40678eb07734cfb5a01e7b7c6c980ae83e69a6f [2023-11-19 07:41:34,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:34,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:34,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:34,352 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:34,352 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:34,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i [2023-11-19 07:41:37,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:37,745 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:37,746 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i [2023-11-19 07:41:37,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/data/78b40de41/34cb17f9775b44afa9198bfbf2533c7b/FLAGe04e81cd6 [2023-11-19 07:41:37,780 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/data/78b40de41/34cb17f9775b44afa9198bfbf2533c7b [2023-11-19 07:41:37,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:37,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:37,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:37,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:37,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:37,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:37" (1/1) ... [2023-11-19 07:41:37,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec614be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:37, skipping insertion in model container [2023-11-19 07:41:37,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:37" (1/1) ... [2023-11-19 07:41:37,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:38,043 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_8389253d-453f-4d96-aa73-fd580ebbbd23/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i[919,932] [2023-11-19 07:41:38,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:38,158 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:38,170 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_8389253d-453f-4d96-aa73-fd580ebbbd23/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i[919,932] [2023-11-19 07:41:38,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:38,306 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:38,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38 WrapperNode [2023-11-19 07:41:38,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:38,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:38,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:38,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:38,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,419 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 226 [2023-11-19 07:41:38,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:38,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:38,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:38,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:38,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:38,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:38,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:38,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:38,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (1/1) ... [2023-11-19 07:41:38,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:38,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:38,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:38,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:41:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:41:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:38,745 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:38,747 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:39,452 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:39,463 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:39,463 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:41:39,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:39 BoogieIcfgContainer [2023-11-19 07:41:39,468 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:39,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:39,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:39,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:39,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:37" (1/3) ... [2023-11-19 07:41:39,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0b8261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:39, skipping insertion in model container [2023-11-19 07:41:39,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:38" (2/3) ... [2023-11-19 07:41:39,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0b8261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:39, skipping insertion in model container [2023-11-19 07:41:39,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:39" (3/3) ... [2023-11-19 07:41:39,479 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i [2023-11-19 07:41:39,502 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:39,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:41:39,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:39,568 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;@39019202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:39,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:41:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 67 states have internal predecessors, (98), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:41:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:41:39,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:39,594 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:39,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:39,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1307449040, now seen corresponding path program 1 times [2023-11-19 07:41:39,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:39,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514655514] [2023-11-19 07:41:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:39,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:39,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514655514] [2023-11-19 07:41:39,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:41:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549002943] [2023-11-19 07:41:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:39,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:39,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:39,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:41:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:40,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:41:40,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-19 07:41:40,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:40,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549002943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:40,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:40,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335667270] [2023-11-19 07:41:40,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:40,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:41:40,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:41:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:41:40,358 INFO L87 Difference]: Start difference. First operand has 95 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 67 states have internal predecessors, (98), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 07:41:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:40,403 INFO L93 Difference]: Finished difference Result 183 states and 320 transitions. [2023-11-19 07:41:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:41:40,406 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2023-11-19 07:41:40,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:40,415 INFO L225 Difference]: With dead ends: 183 [2023-11-19 07:41:40,415 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 07:41:40,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:41:40,423 INFO L413 NwaCegarLoop]: 143 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, 143 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:40,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 07:41:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-19 07:41:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 63 states have internal predecessors, (91), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:41:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 143 transitions. [2023-11-19 07:41:40,515 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 143 transitions. Word has length 176 [2023-11-19 07:41:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:40,516 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 143 transitions. [2023-11-19 07:41:40,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 07:41:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 143 transitions. [2023-11-19 07:41:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:41:40,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:40,526 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:40,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:40,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:41:40,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:40,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1537838712, now seen corresponding path program 1 times [2023-11-19 07:41:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:40,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101880557] [2023-11-19 07:41:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:40,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:40,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282199078] [2023-11-19 07:41:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:40,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:40,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:40,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:40,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:41:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:41,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:41,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:41:51,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:51,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101880557] [2023-11-19 07:41:51,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282199078] [2023-11-19 07:41:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282199078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:51,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:41:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348150780] [2023-11-19 07:41:51,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:51,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:41:51,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:41:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:41:51,998 INFO L87 Difference]: Start difference. First operand 91 states and 143 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:41:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:54,122 INFO L93 Difference]: Finished difference Result 417 states and 649 transitions. [2023-11-19 07:41:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:41:54,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2023-11-19 07:41:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:54,136 INFO L225 Difference]: With dead ends: 417 [2023-11-19 07:41:54,137 INFO L226 Difference]: Without dead ends: 329 [2023-11-19 07:41:54,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:41:54,144 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 511 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:54,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 833 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:41:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-19 07:41:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 212. [2023-11-19 07:41:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 148 states have (on average 1.4256756756756757) internal successors, (211), 149 states have internal predecessors, (211), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-19 07:41:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 331 transitions. [2023-11-19 07:41:54,239 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 331 transitions. Word has length 176 [2023-11-19 07:41:54,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:54,242 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 331 transitions. [2023-11-19 07:41:54,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:41:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 331 transitions. [2023-11-19 07:41:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:41:54,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:54,253 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:54,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:54,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:54,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:54,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2116637812, now seen corresponding path program 1 times [2023-11-19 07:41:54,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:54,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094399115] [2023-11-19 07:41:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:54,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:54,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875554434] [2023-11-19 07:41:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:54,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:54,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:54,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:54,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:41:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:54,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:41:54,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:41:54,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:54,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094399115] [2023-11-19 07:41:54,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875554434] [2023-11-19 07:41:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875554434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:54,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:54,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:54,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185433133] [2023-11-19 07:41:54,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:54,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:54,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:54,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:54,973 INFO L87 Difference]: Start difference. First operand 212 states and 331 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:41:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:55,341 INFO L93 Difference]: Finished difference Result 580 states and 912 transitions. [2023-11-19 07:41:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2023-11-19 07:41:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:55,349 INFO L225 Difference]: With dead ends: 580 [2023-11-19 07:41:55,349 INFO L226 Difference]: Without dead ends: 384 [2023-11-19 07:41:55,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 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 07:41:55,352 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 484 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:55,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 518 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:41:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-19 07:41:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 274. [2023-11-19 07:41:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 182 states have (on average 1.3681318681318682) internal successors, (249), 184 states have internal predecessors, (249), 86 states have call successors, (86), 5 states have call predecessors, (86), 5 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-19 07:41:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 421 transitions. [2023-11-19 07:41:55,403 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 421 transitions. Word has length 176 [2023-11-19 07:41:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:55,404 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 421 transitions. [2023-11-19 07:41:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:41:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 421 transitions. [2023-11-19 07:41:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:41:55,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:55,408 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:55,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:55,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:55,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:55,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1436579442, now seen corresponding path program 1 times [2023-11-19 07:41:55,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:55,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469605308] [2023-11-19 07:41:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:55,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:55,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467657568] [2023-11-19 07:41:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:55,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:55,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:55,679 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:55,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:41:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:55,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:41:55,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:42:06,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469605308] [2023-11-19 07:42:06,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:42:06,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467657568] [2023-11-19 07:42:06,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467657568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:06,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:06,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:42:07,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259572535] [2023-11-19 07:42:07,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:07,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:42:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:07,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:42:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:42:07,003 INFO L87 Difference]: Start difference. First operand 274 states and 421 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:42:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:08,488 INFO L93 Difference]: Finished difference Result 728 states and 1110 transitions. [2023-11-19 07:42:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:42:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2023-11-19 07:42:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:08,494 INFO L225 Difference]: With dead ends: 728 [2023-11-19 07:42:08,495 INFO L226 Difference]: Without dead ends: 470 [2023-11-19 07:42:08,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:42:08,498 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 325 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:08,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 553 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:42:08,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-11-19 07:42:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 365. [2023-11-19 07:42:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 264 states have (on average 1.4318181818181819) internal successors, (378), 267 states have internal predecessors, (378), 94 states have call successors, (94), 6 states have call predecessors, (94), 6 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 07:42:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 566 transitions. [2023-11-19 07:42:08,551 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 566 transitions. Word has length 176 [2023-11-19 07:42:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:08,553 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 566 transitions. [2023-11-19 07:42:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:42:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 566 transitions. [2023-11-19 07:42:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:42:08,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:08,556 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:08,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 07:42:08,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:08,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:08,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1736060230, now seen corresponding path program 1 times [2023-11-19 07:42:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004691090] [2023-11-19 07:42:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:08,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:42:08,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429272011] [2023-11-19 07:42:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:08,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:08,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:08,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:08,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:42:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:09,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:42:09,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-19 07:42:20,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:20,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:20,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004691090] [2023-11-19 07:42:20,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:42:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429272011] [2023-11-19 07:42:20,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429272011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:20,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:20,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:42:20,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775412271] [2023-11-19 07:42:20,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:20,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:42:20,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:42:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:42:20,484 INFO L87 Difference]: Start difference. First operand 365 states and 566 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:42:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:22,151 INFO L93 Difference]: Finished difference Result 825 states and 1260 transitions. [2023-11-19 07:42:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:42:22,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2023-11-19 07:42:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:22,158 INFO L225 Difference]: With dead ends: 825 [2023-11-19 07:42:22,158 INFO L226 Difference]: Without dead ends: 476 [2023-11-19 07:42:22,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:42:22,161 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 275 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:22,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 695 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:42:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-19 07:42:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 387. [2023-11-19 07:42:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 286 states have (on average 1.444055944055944) internal successors, (413), 289 states have internal predecessors, (413), 94 states have call successors, (94), 6 states have call predecessors, (94), 6 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 07:42:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 601 transitions. [2023-11-19 07:42:22,206 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 601 transitions. Word has length 176 [2023-11-19 07:42:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:22,207 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 601 transitions. [2023-11-19 07:42:22,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-19 07:42:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 601 transitions. [2023-11-19 07:42:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:42:22,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:22,211 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:22,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 07:42:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:22,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:22,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1177784118, now seen corresponding path program 1 times [2023-11-19 07:42:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125688005] [2023-11-19 07:42:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:22,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:42:22,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783959939] [2023-11-19 07:42:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:22,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:22,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:22,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8389253d-453f-4d96-aa73-fd580ebbbd23/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:42:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:22,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:42:22,630 INFO L285 TraceCheckSpWp]: Computing forward predicates...