./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-39.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/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_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-39.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/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_0c787af4-eb28-44e0-9607-5bb98a6870ad/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 b745f2eefec39227a3dae672aed32affddda67824dced86b7d9f77df6468e472 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:53,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:53,771 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:04:53,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:53,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:53,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:53,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:53,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:53,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:53,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:53,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:53,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:53,852 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:53,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:53,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:53,855 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:53,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:53,856 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:53,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:53,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:53,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:53,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:53,859 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:53,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:53,860 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:53,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:53,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:53,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:53,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:53,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:53,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:53,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:53,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:53,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:53,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:53,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:53,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:53,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:53,866 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:53,866 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_0c787af4-eb28-44e0-9607-5bb98a6870ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b745f2eefec39227a3dae672aed32affddda67824dced86b7d9f77df6468e472 [2023-11-19 08:04:54,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:54,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:54,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:54,216 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:54,217 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:54,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-39.i [2023-11-19 08:04:57,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:57,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:57,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-39.i [2023-11-19 08:04:57,830 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/data/75cdcfa13/ca108965e11248a48a975e14cd8822cc/FLAGbc3fa5a20 [2023-11-19 08:04:57,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/data/75cdcfa13/ca108965e11248a48a975e14cd8822cc [2023-11-19 08:04:57,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:57,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:57,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:57,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:57,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:57,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:57" (1/1) ... [2023-11-19 08:04:57,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454d1909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:57, skipping insertion in model container [2023-11-19 08:04:57,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:57" (1/1) ... [2023-11-19 08:04:57,908 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:58,129 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_0c787af4-eb28-44e0-9607-5bb98a6870ad/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-39.i[917,930] [2023-11-19 08:04:58,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:58,240 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:58,254 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_0c787af4-eb28-44e0-9607-5bb98a6870ad/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-39.i[917,930] [2023-11-19 08:04:58,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:58,325 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:58,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58 WrapperNode [2023-11-19 08:04:58,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:58,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:58,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:58,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:58,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,424 INFO L138 Inliner]: procedures = 29, calls = 191, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 540 [2023-11-19 08:04:58,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:58,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:58,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:58,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:58,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:58,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:58,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:58,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:58,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (1/1) ... [2023-11-19 08:04:58,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:58,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:58,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 08:04:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:04:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 08:04:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:04:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 08:04:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:04:58,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:04:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:58,862 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:58,865 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:59,631 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:59,646 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:59,646 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:04:59,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:59 BoogieIcfgContainer [2023-11-19 08:04:59,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:59,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:59,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:59,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:59,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:57" (1/3) ... [2023-11-19 08:04:59,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7143283e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:59, skipping insertion in model container [2023-11-19 08:04:59,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:58" (2/3) ... [2023-11-19 08:04:59,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7143283e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:59, skipping insertion in model container [2023-11-19 08:04:59,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:59" (3/3) ... [2023-11-19 08:04:59,669 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-39.i [2023-11-19 08:04:59,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:59,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:04:59,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:59,777 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;@47b32e0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:59,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:04:59,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 99 states have (on average 1.4444444444444444) internal successors, (143), 100 states have internal predecessors, (143), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:04:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 08:04:59,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:59,802 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:59,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:59,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:59,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1101806272, now seen corresponding path program 1 times [2023-11-19 08:04:59,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:59,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731481953] [2023-11-19 08:04:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:59,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 08:05:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:05:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:05:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 08:05:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 08:05:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:05:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:05:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:05:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 08:05:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 08:05:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 08:05:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 08:05:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 08:05:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:05:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-19 08:05:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 08:05:00,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731481953] [2023-11-19 08:05:00,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731481953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:00,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:00,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255608545] [2023-11-19 08:05:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:00,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:00,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:00,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:00,788 INFO L87 Difference]: Start difference. First operand has 118 states, 99 states have (on average 1.4444444444444444) internal successors, (143), 100 states have internal predecessors, (143), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:05:00,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:00,937 INFO L93 Difference]: Finished difference Result 235 states and 370 transitions. [2023-11-19 08:05:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-11-19 08:05:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:00,951 INFO L225 Difference]: With dead ends: 235 [2023-11-19 08:05:00,952 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 08:05:00,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:00,962 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 10 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:00,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 489 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 08:05:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2023-11-19 08:05:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 98 states have internal predecessors, (138), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:05:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 170 transitions. [2023-11-19 08:05:01,029 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 170 transitions. Word has length 128 [2023-11-19 08:05:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:01,030 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 170 transitions. [2023-11-19 08:05:01,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:05:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 170 transitions. [2023-11-19 08:05:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 08:05:01,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:01,036 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:01,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:01,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:01,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1220247746, now seen corresponding path program 1 times [2023-11-19 08:05:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:01,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103821707] [2023-11-19 08:05:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 08:05:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:05:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:05:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 08:05:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 08:05:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:05:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:05:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:05:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 08:05:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 08:05:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 08:05:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 08:05:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 08:05:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:05:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-19 08:05:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 08:05:07,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:07,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103821707] [2023-11-19 08:05:07,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103821707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:07,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:07,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-19 08:05:07,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035551831] [2023-11-19 08:05:07,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:07,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 08:05:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:07,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 08:05:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:05:07,732 INFO L87 Difference]: Start difference. First operand 116 states and 170 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:05:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:11,971 INFO L93 Difference]: Finished difference Result 351 states and 518 transitions. [2023-11-19 08:05:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 08:05:11,973 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-11-19 08:05:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:11,977 INFO L225 Difference]: With dead ends: 351 [2023-11-19 08:05:11,977 INFO L226 Difference]: Without dead ends: 238 [2023-11-19 08:05:11,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2023-11-19 08:05:11,981 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 506 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:11,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1260 Invalid, 1626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 08:05:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-19 08:05:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 126. [2023-11-19 08:05:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 108 states have (on average 1.4074074074074074) internal successors, (152), 108 states have internal predecessors, (152), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:05:12,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 184 transitions. [2023-11-19 08:05:12,009 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 184 transitions. Word has length 128 [2023-11-19 08:05:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:12,010 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 184 transitions. [2023-11-19 08:05:12,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:05:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 184 transitions. [2023-11-19 08:05:12,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 08:05:12,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:12,014 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:12,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:12,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -540189376, now seen corresponding path program 1 times [2023-11-19 08:05:12,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025979291] [2023-11-19 08:05:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 08:05:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:05:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:05:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 08:05:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 08:05:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:05:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:05:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:05:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 08:05:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 08:05:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 08:05:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 08:05:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 08:05:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:05:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-19 08:05:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 08:05:13,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:13,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025979291] [2023-11-19 08:05:13,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025979291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:13,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:13,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 08:05:13,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066992659] [2023-11-19 08:05:13,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:13,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:05:13,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:05:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:05:13,580 INFO L87 Difference]: Start difference. First operand 126 states and 184 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:05:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:14,941 INFO L93 Difference]: Finished difference Result 356 states and 525 transitions. [2023-11-19 08:05:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:05:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-11-19 08:05:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:14,949 INFO L225 Difference]: With dead ends: 356 [2023-11-19 08:05:14,949 INFO L226 Difference]: Without dead ends: 233 [2023-11-19 08:05:14,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:05:14,952 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 454 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:14,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 657 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:05:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-19 08:05:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 147. [2023-11-19 08:05:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 129 states have (on average 1.426356589147287) internal successors, (184), 129 states have internal predecessors, (184), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:05:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 216 transitions. [2023-11-19 08:05:14,985 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 216 transitions. Word has length 128 [2023-11-19 08:05:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:14,986 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 216 transitions. [2023-11-19 08:05:14,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:05:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 216 transitions. [2023-11-19 08:05:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 08:05:14,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:14,990 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:14,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:14,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1807053760, now seen corresponding path program 1 times [2023-11-19 08:05:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838628713] [2023-11-19 08:05:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 08:05:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:05:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:05:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 08:05:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 08:05:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:05:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:05:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:05:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 08:05:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 08:05:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 08:05:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 08:05:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 08:05:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:18,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:05:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-19 08:05:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 08:05:18,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838628713] [2023-11-19 08:05:18,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838628713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:18,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:18,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 08:05:18,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397681721] [2023-11-19 08:05:18,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:18,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 08:05:18,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:05:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:05:18,065 INFO L87 Difference]: Start difference. First operand 147 states and 216 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:05:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:21,650 INFO L93 Difference]: Finished difference Result 377 states and 554 transitions. [2023-11-19 08:05:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:05:21,653 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-11-19 08:05:21,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:21,655 INFO L225 Difference]: With dead ends: 377 [2023-11-19 08:05:21,655 INFO L226 Difference]: Without dead ends: 233 [2023-11-19 08:05:21,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2023-11-19 08:05:21,663 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 717 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:21,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 868 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 08:05:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-19 08:05:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 141. [2023-11-19 08:05:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 123 states have (on average 1.4308943089430894) internal successors, (176), 123 states have internal predecessors, (176), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:05:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2023-11-19 08:05:21,689 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 128 [2023-11-19 08:05:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:21,690 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2023-11-19 08:05:21,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 08:05:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2023-11-19 08:05:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 08:05:21,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:21,695 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:21,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:21,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1486371648, now seen corresponding path program 1 times [2023-11-19 08:05:21,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:21,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977282921] [2023-11-19 08:05:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:21,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 08:05:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:05:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:05:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 08:05:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 08:05:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:05:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:05:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:05:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 08:05:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 08:05:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 08:05:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 08:05:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 08:05:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:05:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-19 08:05:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-19 08:05:23,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:23,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977282921] [2023-11-19 08:05:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977282921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:23,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:23,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 08:05:23,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264734695] [2023-11-19 08:05:23,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:23,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:05:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:23,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:05:23,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:05:23,450 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-19 08:05:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:24,598 INFO L93 Difference]: Finished difference Result 365 states and 539 transitions. [2023-11-19 08:05:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:05:24,599 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2023-11-19 08:05:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:24,601 INFO L225 Difference]: With dead ends: 365 [2023-11-19 08:05:24,601 INFO L226 Difference]: Without dead ends: 227 [2023-11-19 08:05:24,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-11-19 08:05:24,603 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 502 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:24,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 616 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 08:05:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-19 08:05:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 141. [2023-11-19 08:05:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 123 states have (on average 1.4227642276422765) internal successors, (175), 123 states have internal predecessors, (175), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:05:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2023-11-19 08:05:24,630 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 128 [2023-11-19 08:05:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:24,631 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2023-11-19 08:05:24,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-19 08:05:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2023-11-19 08:05:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 08:05:24,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:24,634 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:24,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:05:24,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:24,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2128537278, now seen corresponding path program 1 times [2023-11-19 08:05:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:24,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564380873] [2023-11-19 08:05:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 08:05:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:05:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:05:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 08:05:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 08:05:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:05:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:05:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:05:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 08:05:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 08:05:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 08:05:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-19 08:05:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-19 08:05:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:05:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-19 08:05:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 08:05:28,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:28,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564380873] [2023-11-19 08:05:28,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564380873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:28,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350378938] [2023-11-19 08:05:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:28,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:28,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:28,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:28,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c787af4-eb28-44e0-9607-5bb98a6870ad/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:05:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:28,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-19 08:05:28,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:30,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 08:05:31,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 08:05:32,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 08:05:33,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-19 08:05:35,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:35,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2023-11-19 08:05:37,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 102 [2023-11-19 08:05:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,737 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-11-19 08:05:37,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 177 treesize of output 120 [2023-11-19 08:05:39,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:39,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:39,107 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 08:05:39,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 107 [2023-11-19 08:05:39,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-11-19 08:05:39,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:39,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:39,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:39,741 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2023-11-19 08:05:39,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 155 treesize of output 87 [2023-11-19 08:05:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 192 proven. 219 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-19 08:05:39,910 INFO L327 TraceCheckSpWp]: Computing backward predicates...