./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya --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 2143ca4203945b27e6275311afca0e2a24c1338b67c5ed4d9a859ee19c6064eb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:55:33,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:55:33,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:55:33,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:55:33,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:55:33,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:55:33,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:55:33,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:55:33,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:55:33,106 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:55:33,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:55:33,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:55:33,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:55:33,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:55:33,108 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:55:33,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:55:33,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:55:33,110 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:55:33,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:55:33,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:55:33,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:55:33,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:55:33,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:55:33,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:55:33,113 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:55:33,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:55:33,114 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:55:33,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:55:33,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:55:33,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:55:33,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:55:33,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:55:33,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:55:33,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:55:33,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:55:33,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:55:33,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:55:33,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:55:33,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:55:33,118 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:55:33,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:55:33,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:55:33,118 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_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2143ca4203945b27e6275311afca0e2a24c1338b67c5ed4d9a859ee19c6064eb [2023-11-29 00:55:33,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:55:33,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:55:33,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:55:33,353 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:55:33,353 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:55:33,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c [2023-11-29 00:55:36,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:55:36,491 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:55:36,492 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c [2023-11-29 00:55:36,521 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/data/73be28b12/5e4d0d3a9c694e75ad724853aa6a5e8a/FLAGa32dfd49b [2023-11-29 00:55:36,533 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/data/73be28b12/5e4d0d3a9c694e75ad724853aa6a5e8a [2023-11-29 00:55:36,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:55:36,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:55:36,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:55:36,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:55:36,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:55:36,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:55:36" (1/1) ... [2023-11-29 00:55:36,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18889ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:36, skipping insertion in model container [2023-11-29 00:55:36,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:55:36" (1/1) ... [2023-11-29 00:55:36,686 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:55:36,994 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_46d863d7-e63e-4384-8f91-cdfaf9e800ad/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c[15482,15495] [2023-11-29 00:55:37,053 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_46d863d7-e63e-4384-8f91-cdfaf9e800ad/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c[21037,21050] [2023-11-29 00:55:37,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:55:37,720 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:55:37,755 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_46d863d7-e63e-4384-8f91-cdfaf9e800ad/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c[15482,15495] [2023-11-29 00:55:37,766 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_46d863d7-e63e-4384-8f91-cdfaf9e800ad/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c[21037,21050] [2023-11-29 00:55:38,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:55:38,212 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:55:38,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38 WrapperNode [2023-11-29 00:55:38,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:55:38,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:55:38,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:55:38,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:55:38,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,510 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5152 [2023-11-29 00:55:38,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:55:38,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:55:38,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:55:38,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:55:38,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,593 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,718 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:55:38,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:55:38,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:55:38,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:55:38,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:55:38,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (1/1) ... [2023-11-29 00:55:38,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:55:38,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:55:39,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:55:39,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:55:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:55:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:55:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:55:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:55:39,130 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:55:39,132 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:55:43,814 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:55:43,866 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:55:43,866 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:55:43,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:55:43 BoogieIcfgContainer [2023-11-29 00:55:43,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:55:43,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:55:43,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:55:43,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:55:43,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:55:36" (1/3) ... [2023-11-29 00:55:43,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69141857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:55:43, skipping insertion in model container [2023-11-29 00:55:43,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:38" (2/3) ... [2023-11-29 00:55:43,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69141857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:55:43, skipping insertion in model container [2023-11-29 00:55:43,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:55:43" (3/3) ... [2023-11-29 00:55:43,874 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c [2023-11-29 00:55:43,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:55:43,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 00:55:43,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:55:43,953 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;@800061a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:55:43,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 00:55:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:55:43,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:43,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:43,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:43,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2023-11-29 00:55:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:43,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54045208] [2023-11-29 00:55:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:44,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:44,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54045208] [2023-11-29 00:55:44,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54045208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:44,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:44,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:55:44,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511569910] [2023-11-29 00:55:44,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:44,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:55:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:55:44,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:55:44,205 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:44,299 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-11-29 00:55:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:55:44,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-29 00:55:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:44,318 INFO L225 Difference]: With dead ends: 1654 [2023-11-29 00:55:44,318 INFO L226 Difference]: Without dead ends: 845 [2023-11-29 00:55:44,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:55:44,326 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:44,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-29 00:55:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-29 00:55:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-11-29 00:55:44,404 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-11-29 00:55:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:44,405 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-11-29 00:55:44,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-11-29 00:55:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:55:44,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:44,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:44,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:55:44,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:44,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2023-11-29 00:55:44,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:44,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389818145] [2023-11-29 00:55:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:44,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:44,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:44,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389818145] [2023-11-29 00:55:44,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389818145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:44,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:44,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:55:44,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677605698] [2023-11-29 00:55:44,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:44,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:55:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:55:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:55:44,686 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:44,797 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-11-29 00:55:44,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:55:44,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-29 00:55:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:44,804 INFO L225 Difference]: With dead ends: 895 [2023-11-29 00:55:44,804 INFO L226 Difference]: Without dead ends: 845 [2023-11-29 00:55:44,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:55:44,807 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:44,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:55:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-29 00:55:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-29 00:55:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-11-29 00:55:44,834 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-11-29 00:55:44,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:44,834 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-11-29 00:55:44,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:44,835 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-11-29 00:55:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 00:55:44,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:44,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:44,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:55:44,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:44,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash -308037014, now seen corresponding path program 1 times [2023-11-29 00:55:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:44,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506244762] [2023-11-29 00:55:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:44,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506244762] [2023-11-29 00:55:44,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506244762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:44,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:44,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:55:44,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338891602] [2023-11-29 00:55:44,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:44,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:55:44,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:44,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:55:44,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:44,933 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:48,489 INFO L93 Difference]: Finished difference Result 2349 states and 4432 transitions. [2023-11-29 00:55:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:55:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-29 00:55:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:48,497 INFO L225 Difference]: With dead ends: 2349 [2023-11-29 00:55:48,497 INFO L226 Difference]: Without dead ends: 1596 [2023-11-29 00:55:48,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:48,500 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 891 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:48,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 545 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 00:55:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-11-29 00:55:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2023-11-29 00:55:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.6223337515683813) internal successors, (2586), 1595 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2586 transitions. [2023-11-29 00:55:48,535 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2586 transitions. Word has length 47 [2023-11-29 00:55:48,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:48,536 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2586 transitions. [2023-11-29 00:55:48,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2586 transitions. [2023-11-29 00:55:48,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 00:55:48,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:48,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:48,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:55:48,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:48,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2023-11-29 00:55:48,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34959037] [2023-11-29 00:55:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:48,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:48,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:48,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34959037] [2023-11-29 00:55:48,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34959037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:48,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:48,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:55:48,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26926832] [2023-11-29 00:55:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:48,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:48,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:48,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:48,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:48,747 INFO L87 Difference]: Start difference. First operand 1596 states and 2586 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:49,106 INFO L93 Difference]: Finished difference Result 2160 states and 3498 transitions. [2023-11-29 00:55:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:55:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 00:55:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:49,119 INFO L225 Difference]: With dead ends: 2160 [2023-11-29 00:55:49,120 INFO L226 Difference]: Without dead ends: 2113 [2023-11-29 00:55:49,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:55:49,122 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:49,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:55:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-11-29 00:55:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1641. [2023-11-29 00:55:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.6223306894447833) internal successors, (2659), 1640 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2659 transitions. [2023-11-29 00:55:49,177 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2659 transitions. Word has length 62 [2023-11-29 00:55:49,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:49,177 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2659 transitions. [2023-11-29 00:55:49,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2659 transitions. [2023-11-29 00:55:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 00:55:49,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:49,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:49,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:55:49,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:49,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2023-11-29 00:55:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34939595] [2023-11-29 00:55:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:49,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34939595] [2023-11-29 00:55:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34939595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:49,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:49,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:55:49,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728940350] [2023-11-29 00:55:49,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:49,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:55:49,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:55:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:49,268 INFO L87 Difference]: Start difference. First operand 1641 states and 2659 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:49,307 INFO L93 Difference]: Finished difference Result 1814 states and 2938 transitions. [2023-11-29 00:55:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:55:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 00:55:49,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:49,317 INFO L225 Difference]: With dead ends: 1814 [2023-11-29 00:55:49,318 INFO L226 Difference]: Without dead ends: 1722 [2023-11-29 00:55:49,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:49,320 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:49,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:49,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-11-29 00:55:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-11-29 00:55:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.6210710128055879) internal successors, (2785), 1719 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2785 transitions. [2023-11-29 00:55:49,370 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2785 transitions. Word has length 64 [2023-11-29 00:55:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:49,371 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2785 transitions. [2023-11-29 00:55:49,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2785 transitions. [2023-11-29 00:55:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 00:55:49,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:49,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:49,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:55:49,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:49,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2023-11-29 00:55:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536980083] [2023-11-29 00:55:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536980083] [2023-11-29 00:55:49,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536980083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:49,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:49,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:55:49,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983070847] [2023-11-29 00:55:49,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:49,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:49,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:49,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:49,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:49,687 INFO L87 Difference]: Start difference. First operand 1720 states and 2785 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:49,952 INFO L93 Difference]: Finished difference Result 1893 states and 3061 transitions. [2023-11-29 00:55:49,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:55:49,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 00:55:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:49,963 INFO L225 Difference]: With dead ends: 1893 [2023-11-29 00:55:49,963 INFO L226 Difference]: Without dead ends: 1722 [2023-11-29 00:55:49,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:55:49,965 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 1530 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:49,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1983 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:55:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-11-29 00:55:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-11-29 00:55:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.619906868451688) internal successors, (2783), 1719 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2783 transitions. [2023-11-29 00:55:50,016 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2783 transitions. Word has length 64 [2023-11-29 00:55:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:50,016 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2783 transitions. [2023-11-29 00:55:50,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2783 transitions. [2023-11-29 00:55:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 00:55:50,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:50,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:50,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:55:50,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:50,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2023-11-29 00:55:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64051559] [2023-11-29 00:55:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:50,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:50,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64051559] [2023-11-29 00:55:50,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64051559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:50,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:50,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:55:50,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288588625] [2023-11-29 00:55:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:50,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:55:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:50,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:55:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:55:50,246 INFO L87 Difference]: Start difference. First operand 1720 states and 2783 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:50,291 INFO L93 Difference]: Finished difference Result 1728 states and 2792 transitions. [2023-11-29 00:55:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:55:50,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-29 00:55:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:50,301 INFO L225 Difference]: With dead ends: 1728 [2023-11-29 00:55:50,302 INFO L226 Difference]: Without dead ends: 1726 [2023-11-29 00:55:50,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:55:50,303 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:50,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-11-29 00:55:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-11-29 00:55:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.6178861788617886) internal successors, (2786), 1723 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2786 transitions. [2023-11-29 00:55:50,346 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2786 transitions. Word has length 65 [2023-11-29 00:55:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:50,347 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2786 transitions. [2023-11-29 00:55:50,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2786 transitions. [2023-11-29 00:55:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 00:55:50,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:50,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:50,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:55:50,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:50,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:50,349 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2023-11-29 00:55:50,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:50,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107145657] [2023-11-29 00:55:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:50,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:50,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:50,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107145657] [2023-11-29 00:55:50,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107145657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:50,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:50,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:55:50,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440642497] [2023-11-29 00:55:50,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:50,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:55:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:55:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:50,409 INFO L87 Difference]: Start difference. First operand 1724 states and 2786 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:50,451 INFO L93 Difference]: Finished difference Result 1910 states and 3079 transitions. [2023-11-29 00:55:50,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:55:50,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 00:55:50,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:50,462 INFO L225 Difference]: With dead ends: 1910 [2023-11-29 00:55:50,462 INFO L226 Difference]: Without dead ends: 1814 [2023-11-29 00:55:50,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:50,464 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:50,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-11-29 00:55:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1812. [2023-11-29 00:55:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.6149171270718232) internal successors, (2923), 1811 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2923 transitions. [2023-11-29 00:55:50,511 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2923 transitions. Word has length 66 [2023-11-29 00:55:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:50,512 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2923 transitions. [2023-11-29 00:55:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2923 transitions. [2023-11-29 00:55:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 00:55:50,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:50,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:50,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:55:50,513 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:50,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:50,514 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2023-11-29 00:55:50,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:50,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046341343] [2023-11-29 00:55:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:50,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:50,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046341343] [2023-11-29 00:55:50,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046341343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:50,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:50,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:55:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748688313] [2023-11-29 00:55:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:50,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:55:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:55:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:50,574 INFO L87 Difference]: Start difference. First operand 1812 states and 2923 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:50,620 INFO L93 Difference]: Finished difference Result 2310 states and 3703 transitions. [2023-11-29 00:55:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:55:50,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 00:55:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:50,632 INFO L225 Difference]: With dead ends: 2310 [2023-11-29 00:55:50,632 INFO L226 Difference]: Without dead ends: 2049 [2023-11-29 00:55:50,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:50,634 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:50,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-11-29 00:55:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2023-11-29 00:55:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2045 states have (on average 1.6063569682151588) internal successors, (3285), 2046 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3285 transitions. [2023-11-29 00:55:50,688 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3285 transitions. Word has length 66 [2023-11-29 00:55:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:50,688 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3285 transitions. [2023-11-29 00:55:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3285 transitions. [2023-11-29 00:55:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 00:55:50,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:50,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:50,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:55:50,690 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:50,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2023-11-29 00:55:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:50,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286947367] [2023-11-29 00:55:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286947367] [2023-11-29 00:55:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286947367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:50,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:50,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:55:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241404087] [2023-11-29 00:55:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:55:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:55:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:50,745 INFO L87 Difference]: Start difference. First operand 2047 states and 3285 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:50,800 INFO L93 Difference]: Finished difference Result 2991 states and 4747 transitions. [2023-11-29 00:55:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:55:50,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 00:55:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:50,814 INFO L225 Difference]: With dead ends: 2991 [2023-11-29 00:55:50,814 INFO L226 Difference]: Without dead ends: 2495 [2023-11-29 00:55:50,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:50,817 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:50,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-11-29 00:55:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2023-11-29 00:55:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.5901244480128462) internal successors, (3961), 2492 states have internal predecessors, (3961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3961 transitions. [2023-11-29 00:55:50,889 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3961 transitions. Word has length 66 [2023-11-29 00:55:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:50,889 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 3961 transitions. [2023-11-29 00:55:50,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3961 transitions. [2023-11-29 00:55:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 00:55:50,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:50,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:55:50,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:50,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2023-11-29 00:55:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915003817] [2023-11-29 00:55:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:50,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:50,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915003817] [2023-11-29 00:55:50,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915003817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:50,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:50,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:55:50,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010227726] [2023-11-29 00:55:50,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:50,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:55:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:50,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:55:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:50,946 INFO L87 Difference]: Start difference. First operand 2493 states and 3961 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:51,013 INFO L93 Difference]: Finished difference Result 4281 states and 6691 transitions. [2023-11-29 00:55:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:55:51,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 00:55:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:51,030 INFO L225 Difference]: With dead ends: 4281 [2023-11-29 00:55:51,030 INFO L226 Difference]: Without dead ends: 3339 [2023-11-29 00:55:51,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:51,033 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:51,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2023-11-29 00:55:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3337. [2023-11-29 00:55:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3335 states have (on average 1.5643178410794603) internal successors, (5217), 3336 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5217 transitions. [2023-11-29 00:55:51,134 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5217 transitions. Word has length 66 [2023-11-29 00:55:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:51,135 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 5217 transitions. [2023-11-29 00:55:51,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5217 transitions. [2023-11-29 00:55:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 00:55:51,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:51,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:51,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:55:51,136 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:51,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:51,137 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2023-11-29 00:55:51,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:51,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504963809] [2023-11-29 00:55:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:51,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:51,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:51,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504963809] [2023-11-29 00:55:51,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504963809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:51,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:51,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:55:51,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599539163] [2023-11-29 00:55:51,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:51,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:55:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:55:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:51,190 INFO L87 Difference]: Start difference. First operand 3337 states and 5217 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:51,327 INFO L93 Difference]: Finished difference Result 6717 states and 10291 transitions. [2023-11-29 00:55:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:55:51,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 00:55:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:51,352 INFO L225 Difference]: With dead ends: 6717 [2023-11-29 00:55:51,353 INFO L226 Difference]: Without dead ends: 4931 [2023-11-29 00:55:51,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:51,356 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:51,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-11-29 00:55:51,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4929. [2023-11-29 00:55:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.5297341181246193) internal successors, (7537), 4928 states have internal predecessors, (7537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7537 transitions. [2023-11-29 00:55:51,514 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7537 transitions. Word has length 66 [2023-11-29 00:55:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:51,514 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 7537 transitions. [2023-11-29 00:55:51,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7537 transitions. [2023-11-29 00:55:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 00:55:51,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:51,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:51,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:55:51,516 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:51,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2023-11-29 00:55:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:51,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127257570] [2023-11-29 00:55:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127257570] [2023-11-29 00:55:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127257570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:51,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:51,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:55:51,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255846121] [2023-11-29 00:55:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:51,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:55:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:55:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:51,573 INFO L87 Difference]: Start difference. First operand 4929 states and 7537 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:51,741 INFO L93 Difference]: Finished difference Result 11301 states and 16915 transitions. [2023-11-29 00:55:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:55:51,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 00:55:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:51,758 INFO L225 Difference]: With dead ends: 11301 [2023-11-29 00:55:51,758 INFO L226 Difference]: Without dead ends: 7923 [2023-11-29 00:55:51,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:55:51,764 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:51,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:55:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2023-11-29 00:55:51,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 7921. [2023-11-29 00:55:52,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7919 states have (on average 1.4892031822199772) internal successors, (11793), 7920 states have internal predecessors, (11793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 11793 transitions. [2023-11-29 00:55:52,017 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 11793 transitions. Word has length 66 [2023-11-29 00:55:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:52,018 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 11793 transitions. [2023-11-29 00:55:52,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 11793 transitions. [2023-11-29 00:55:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 00:55:52,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:52,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:52,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:55:52,022 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:52,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2023-11-29 00:55:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:52,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866114512] [2023-11-29 00:55:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:52,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:55:52,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:52,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866114512] [2023-11-29 00:55:52,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866114512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:52,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:52,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:55:52,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523313855] [2023-11-29 00:55:52,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:52,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:52,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:52,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:52,249 INFO L87 Difference]: Start difference. First operand 7921 states and 11793 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:53,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:53,192 INFO L93 Difference]: Finished difference Result 45567 states and 66616 transitions. [2023-11-29 00:55:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:55:53,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 00:55:53,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:53,262 INFO L225 Difference]: With dead ends: 45567 [2023-11-29 00:55:53,263 INFO L226 Difference]: Without dead ends: 41085 [2023-11-29 00:55:53,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:55:53,273 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8059 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8059 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:53,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8059 Valid, 3989 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:55:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41085 states. [2023-11-29 00:55:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41085 to 13361. [2023-11-29 00:55:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 13359 states have (on average 1.4696459315817052) internal successors, (19633), 13360 states have internal predecessors, (19633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 19633 transitions. [2023-11-29 00:55:53,842 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 19633 transitions. Word has length 86 [2023-11-29 00:55:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:53,842 INFO L495 AbstractCegarLoop]: Abstraction has 13361 states and 19633 transitions. [2023-11-29 00:55:53,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 19633 transitions. [2023-11-29 00:55:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 00:55:53,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:53,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:55:53,847 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:53,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:53,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2023-11-29 00:55:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:53,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463248302] [2023-11-29 00:55:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:55:54,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:54,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463248302] [2023-11-29 00:55:54,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463248302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:54,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:54,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:55:54,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630649075] [2023-11-29 00:55:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:54,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:54,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:54,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:54,035 INFO L87 Difference]: Start difference. First operand 13361 states and 19633 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:55,076 INFO L93 Difference]: Finished difference Result 51935 states and 75832 transitions. [2023-11-29 00:55:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:55:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 00:55:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:55,155 INFO L225 Difference]: With dead ends: 51935 [2023-11-29 00:55:55,156 INFO L226 Difference]: Without dead ends: 45565 [2023-11-29 00:55:55,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:55:55,165 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:55,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:55:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45565 states. [2023-11-29 00:55:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45565 to 21969. [2023-11-29 00:55:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 21967 states have (on average 1.4575044384758957) internal successors, (32017), 21968 states have internal predecessors, (32017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 32017 transitions. [2023-11-29 00:55:55,936 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 32017 transitions. Word has length 86 [2023-11-29 00:55:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:55,937 INFO L495 AbstractCegarLoop]: Abstraction has 21969 states and 32017 transitions. [2023-11-29 00:55:55,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 32017 transitions. [2023-11-29 00:55:55,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 00:55:55,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:55,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:55,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:55:55,941 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:55,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:55,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2023-11-29 00:55:55,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:55,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170479647] [2023-11-29 00:55:55,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:55,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:55:56,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:56,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170479647] [2023-11-29 00:55:56,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170479647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:56,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:56,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:55:56,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258652967] [2023-11-29 00:55:56,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:56,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:56,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:56,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:56,186 INFO L87 Difference]: Start difference. First operand 21969 states and 32017 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:57,383 INFO L93 Difference]: Finished difference Result 58303 states and 85016 transitions. [2023-11-29 00:55:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:55:57,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 00:55:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:57,453 INFO L225 Difference]: With dead ends: 58303 [2023-11-29 00:55:57,453 INFO L226 Difference]: Without dead ends: 51933 [2023-11-29 00:55:57,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:55:57,467 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:57,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:55:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2023-11-29 00:55:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 28337. [2023-11-29 00:55:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28337 states, 28335 states have (on average 1.4540674077995412) internal successors, (41201), 28336 states have internal predecessors, (41201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28337 states to 28337 states and 41201 transitions. [2023-11-29 00:55:58,423 INFO L78 Accepts]: Start accepts. Automaton has 28337 states and 41201 transitions. Word has length 86 [2023-11-29 00:55:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:58,423 INFO L495 AbstractCegarLoop]: Abstraction has 28337 states and 41201 transitions. [2023-11-29 00:55:58,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28337 states and 41201 transitions. [2023-11-29 00:55:58,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 00:55:58,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:58,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:58,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:55:58,430 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:58,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2023-11-29 00:55:58,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:58,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479076214] [2023-11-29 00:55:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:55:58,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:58,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479076214] [2023-11-29 00:55:58,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479076214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:58,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:58,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:55:58,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398768478] [2023-11-29 00:55:58,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:58,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:58,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:58,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:58,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:58,661 INFO L87 Difference]: Start difference. First operand 28337 states and 41201 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:00,219 INFO L93 Difference]: Finished difference Result 64671 states and 94200 transitions. [2023-11-29 00:56:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:56:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 00:56:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:00,276 INFO L225 Difference]: With dead ends: 64671 [2023-11-29 00:56:00,276 INFO L226 Difference]: Without dead ends: 58301 [2023-11-29 00:56:00,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:56:00,288 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8157 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:00,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8157 Valid, 3919 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:56:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58301 states. [2023-11-29 00:56:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58301 to 34705. [2023-11-29 00:56:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34705 states, 34703 states have (on average 1.4518917672823675) internal successors, (50385), 34704 states have internal predecessors, (50385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 50385 transitions. [2023-11-29 00:56:01,424 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 50385 transitions. Word has length 86 [2023-11-29 00:56:01,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:01,424 INFO L495 AbstractCegarLoop]: Abstraction has 34705 states and 50385 transitions. [2023-11-29 00:56:01,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 50385 transitions. [2023-11-29 00:56:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 00:56:01,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:01,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:01,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:56:01,428 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:01,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404091, now seen corresponding path program 1 times [2023-11-29 00:56:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:01,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612467894] [2023-11-29 00:56:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:01,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:56:01,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:01,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612467894] [2023-11-29 00:56:01,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612467894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:01,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:01,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:56:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822893923] [2023-11-29 00:56:01,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:56:01,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:56:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:56:01,570 INFO L87 Difference]: Start difference. First operand 34705 states and 50385 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:03,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:03,460 INFO L93 Difference]: Finished difference Result 71039 states and 103384 transitions. [2023-11-29 00:56:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:56:03,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 00:56:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:03,520 INFO L225 Difference]: With dead ends: 71039 [2023-11-29 00:56:03,520 INFO L226 Difference]: Without dead ends: 64669 [2023-11-29 00:56:03,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:56:03,535 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8073 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8073 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:03,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8073 Valid, 3975 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:56:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64669 states. [2023-11-29 00:56:05,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64669 to 41073. [2023-11-29 00:56:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41073 states, 41071 states have (on average 1.4503907866864698) internal successors, (59569), 41072 states have internal predecessors, (59569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:05,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 59569 transitions. [2023-11-29 00:56:05,134 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 59569 transitions. Word has length 86 [2023-11-29 00:56:05,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:05,135 INFO L495 AbstractCegarLoop]: Abstraction has 41073 states and 59569 transitions. [2023-11-29 00:56:05,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 59569 transitions. [2023-11-29 00:56:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 00:56:05,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:05,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:05,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:56:05,140 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:05,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1634382779, now seen corresponding path program 1 times [2023-11-29 00:56:05,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:05,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378007375] [2023-11-29 00:56:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:05,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:56:05,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:05,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378007375] [2023-11-29 00:56:05,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378007375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:05,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:05,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:56:05,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974754324] [2023-11-29 00:56:05,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:05,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:56:05,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:05,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:56:05,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:56:05,313 INFO L87 Difference]: Start difference. First operand 41073 states and 59569 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:07,231 INFO L93 Difference]: Finished difference Result 77407 states and 112568 transitions. [2023-11-29 00:56:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:56:07,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 00:56:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:07,289 INFO L225 Difference]: With dead ends: 77407 [2023-11-29 00:56:07,289 INFO L226 Difference]: Without dead ends: 71037 [2023-11-29 00:56:07,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:56:07,302 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:07,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:56:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2023-11-29 00:56:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 47441. [2023-11-29 00:56:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.449292775986003) internal successors, (68753), 47440 states have internal predecessors, (68753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68753 transitions. [2023-11-29 00:56:08,880 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68753 transitions. Word has length 86 [2023-11-29 00:56:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:08,880 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68753 transitions. [2023-11-29 00:56:08,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68753 transitions. [2023-11-29 00:56:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 00:56:08,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:08,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:56:08,883 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:08,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1298476795, now seen corresponding path program 1 times [2023-11-29 00:56:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:08,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794291987] [2023-11-29 00:56:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:08,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:08,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:08,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794291987] [2023-11-29 00:56:08,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794291987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:08,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:08,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:56:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965489406] [2023-11-29 00:56:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:08,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:56:08,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:56:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:08,988 INFO L87 Difference]: Start difference. First operand 47441 states and 68753 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:10,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:10,383 INFO L93 Difference]: Finished difference Result 93333 states and 134995 transitions. [2023-11-29 00:56:10,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:56:10,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-29 00:56:10,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:10,424 INFO L225 Difference]: With dead ends: 93333 [2023-11-29 00:56:10,424 INFO L226 Difference]: Without dead ends: 47443 [2023-11-29 00:56:10,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:10,447 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:10,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:56:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47443 states. [2023-11-29 00:56:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47443 to 47441. [2023-11-29 00:56:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.4347899407660363) internal successors, (68065), 47440 states have internal predecessors, (68065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:12,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68065 transitions. [2023-11-29 00:56:12,526 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68065 transitions. Word has length 87 [2023-11-29 00:56:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:12,526 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68065 transitions. [2023-11-29 00:56:12,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:12,527 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68065 transitions. [2023-11-29 00:56:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 00:56:12,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:12,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:12,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:56:12,529 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:12,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1037402045, now seen corresponding path program 1 times [2023-11-29 00:56:12,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:12,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476777583] [2023-11-29 00:56:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:12,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476777583] [2023-11-29 00:56:12,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476777583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:12,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:12,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:56:12,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439516031] [2023-11-29 00:56:12,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:12,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:56:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:56:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:12,609 INFO L87 Difference]: Start difference. First operand 47441 states and 68065 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:13,078 INFO L93 Difference]: Finished difference Result 64265 states and 92328 transitions. [2023-11-29 00:56:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:56:13,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-29 00:56:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:13,094 INFO L225 Difference]: With dead ends: 64265 [2023-11-29 00:56:13,094 INFO L226 Difference]: Without dead ends: 18375 [2023-11-29 00:56:13,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:13,112 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:13,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:56:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2023-11-29 00:56:13,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18368. [2023-11-29 00:56:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18368 states, 18366 states have (on average 1.4444081454862245) internal successors, (26528), 18367 states have internal predecessors, (26528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 26528 transitions. [2023-11-29 00:56:13,709 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 26528 transitions. Word has length 88 [2023-11-29 00:56:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:13,709 INFO L495 AbstractCegarLoop]: Abstraction has 18368 states and 26528 transitions. [2023-11-29 00:56:13,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 26528 transitions. [2023-11-29 00:56:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 00:56:13,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:13,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:56:13,712 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:13,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1781311287, now seen corresponding path program 1 times [2023-11-29 00:56:13,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386907266] [2023-11-29 00:56:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:13,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:13,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:13,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386907266] [2023-11-29 00:56:13,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386907266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:13,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:13,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:56:13,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354938457] [2023-11-29 00:56:13,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:13,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:56:13,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:13,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:56:13,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:13,787 INFO L87 Difference]: Start difference. First operand 18368 states and 26528 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:14,027 INFO L93 Difference]: Finished difference Result 26772 states and 38530 transitions. [2023-11-29 00:56:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:56:14,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 00:56:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:14,035 INFO L225 Difference]: With dead ends: 26772 [2023-11-29 00:56:14,035 INFO L226 Difference]: Without dead ends: 9970 [2023-11-29 00:56:14,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:14,042 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:14,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:56:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2023-11-29 00:56:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9968. [2023-11-29 00:56:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9966 states have (on average 1.4457154324703994) internal successors, (14408), 9967 states have internal predecessors, (14408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14408 transitions. [2023-11-29 00:56:14,296 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14408 transitions. Word has length 89 [2023-11-29 00:56:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:14,296 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 14408 transitions. [2023-11-29 00:56:14,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14408 transitions. [2023-11-29 00:56:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:56:14,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:14,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:14,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:56:14,298 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:14,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2081860631, now seen corresponding path program 1 times [2023-11-29 00:56:14,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:14,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422879546] [2023-11-29 00:56:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:14,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:14,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:14,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422879546] [2023-11-29 00:56:14,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422879546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:14,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:14,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:56:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566042873] [2023-11-29 00:56:14,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:14,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:56:14,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:14,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:56:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:14,379 INFO L87 Difference]: Start difference. First operand 9968 states and 14408 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:14,514 INFO L93 Difference]: Finished difference Result 14172 states and 20350 transitions. [2023-11-29 00:56:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:56:14,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:56:14,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:14,520 INFO L225 Difference]: With dead ends: 14172 [2023-11-29 00:56:14,520 INFO L226 Difference]: Without dead ends: 5770 [2023-11-29 00:56:14,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:14,524 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:14,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:56:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2023-11-29 00:56:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2023-11-29 00:56:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5766 states have (on average 1.4582032604925426) internal successors, (8408), 5767 states have internal predecessors, (8408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8408 transitions. [2023-11-29 00:56:14,662 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8408 transitions. Word has length 91 [2023-11-29 00:56:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:14,662 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 8408 transitions. [2023-11-29 00:56:14,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8408 transitions. [2023-11-29 00:56:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 00:56:14,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:14,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:14,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:56:14,664 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:14,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash 207620325, now seen corresponding path program 1 times [2023-11-29 00:56:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:14,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399479725] [2023-11-29 00:56:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:14,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:14,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399479725] [2023-11-29 00:56:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399479725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:14,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:14,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:56:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271396088] [2023-11-29 00:56:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:14,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:56:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:56:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:14,745 INFO L87 Difference]: Start difference. First operand 5768 states and 8408 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:14,825 INFO L93 Difference]: Finished difference Result 7872 states and 11350 transitions. [2023-11-29 00:56:14,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:56:14,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-29 00:56:14,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:14,829 INFO L225 Difference]: With dead ends: 7872 [2023-11-29 00:56:14,829 INFO L226 Difference]: Without dead ends: 3670 [2023-11-29 00:56:14,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:14,832 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:14,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:56:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2023-11-29 00:56:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3668. [2023-11-29 00:56:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3666 states have (on average 1.4833606110201856) internal successors, (5438), 3667 states have internal predecessors, (5438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5438 transitions. [2023-11-29 00:56:14,907 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5438 transitions. Word has length 93 [2023-11-29 00:56:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:14,907 INFO L495 AbstractCegarLoop]: Abstraction has 3668 states and 5438 transitions. [2023-11-29 00:56:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5438 transitions. [2023-11-29 00:56:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 00:56:14,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:14,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:14,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 00:56:14,909 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:14,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411661, now seen corresponding path program 1 times [2023-11-29 00:56:14,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:14,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211080378] [2023-11-29 00:56:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:14,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:15,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211080378] [2023-11-29 00:56:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211080378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:15,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:15,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:56:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719816039] [2023-11-29 00:56:15,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:15,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:56:15,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:56:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:15,008 INFO L87 Difference]: Start difference. First operand 3668 states and 5438 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:15,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:15,079 INFO L93 Difference]: Finished difference Result 4722 states and 6895 transitions. [2023-11-29 00:56:15,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:56:15,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-29 00:56:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:15,083 INFO L225 Difference]: With dead ends: 4722 [2023-11-29 00:56:15,083 INFO L226 Difference]: Without dead ends: 2620 [2023-11-29 00:56:15,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:15,085 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:15,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:56:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2023-11-29 00:56:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2618. [2023-11-29 00:56:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2616 states have (on average 1.5168195718654434) internal successors, (3968), 2617 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3968 transitions. [2023-11-29 00:56:15,152 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3968 transitions. Word has length 95 [2023-11-29 00:56:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:15,152 INFO L495 AbstractCegarLoop]: Abstraction has 2618 states and 3968 transitions. [2023-11-29 00:56:15,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3968 transitions. [2023-11-29 00:56:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 00:56:15,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:15,153 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:15,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:56:15,153 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:15,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:15,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1010802943, now seen corresponding path program 1 times [2023-11-29 00:56:15,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:15,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146042678] [2023-11-29 00:56:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:15,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:56:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:15,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146042678] [2023-11-29 00:56:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146042678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422762211] [2023-11-29 00:56:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:15,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:15,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:15,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:15,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:56:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:15,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:56:15,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:56:15,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:56:16,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422762211] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:16,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:16,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-11-29 00:56:16,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679161222] [2023-11-29 00:56:16,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:16,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:56:16,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:56:16,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:56:16,082 INFO L87 Difference]: Start difference. First operand 2618 states and 3968 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:16,436 INFO L93 Difference]: Finished difference Result 5154 states and 7367 transitions. [2023-11-29 00:56:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:56:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 00:56:16,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:16,441 INFO L225 Difference]: With dead ends: 5154 [2023-11-29 00:56:16,441 INFO L226 Difference]: Without dead ends: 4102 [2023-11-29 00:56:16,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:56:16,444 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1583 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:16,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 3445 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:56:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2023-11-29 00:56:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4025. [2023-11-29 00:56:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4025 states, 4023 states have (on average 1.4315187670892369) internal successors, (5759), 4024 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 5759 transitions. [2023-11-29 00:56:16,680 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 5759 transitions. Word has length 97 [2023-11-29 00:56:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:16,680 INFO L495 AbstractCegarLoop]: Abstraction has 4025 states and 5759 transitions. [2023-11-29 00:56:16,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 5759 transitions. [2023-11-29 00:56:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 00:56:16,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:16,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:16,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:56:16,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:56:16,883 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:16,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash 806498379, now seen corresponding path program 1 times [2023-11-29 00:56:16,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:16,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766351590] [2023-11-29 00:56:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:16,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:18,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:18,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766351590] [2023-11-29 00:56:18,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766351590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:18,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577716159] [2023-11-29 00:56:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:18,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:18,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:18,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:56:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:18,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:56:18,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:18,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:19,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577716159] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:19,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:19,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-11-29 00:56:19,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893702639] [2023-11-29 00:56:19,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:19,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 00:56:19,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:19,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 00:56:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:56:19,764 INFO L87 Difference]: Start difference. First operand 4025 states and 5759 transitions. Second operand has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:22,758 INFO L93 Difference]: Finished difference Result 15869 states and 21320 transitions. [2023-11-29 00:56:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 00:56:22,759 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-11-29 00:56:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:22,768 INFO L225 Difference]: With dead ends: 15869 [2023-11-29 00:56:22,768 INFO L226 Difference]: Without dead ends: 13454 [2023-11-29 00:56:22,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1004, Invalid=3966, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 00:56:22,773 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 27530 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27530 SdHoareTripleChecker+Valid, 9663 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:22,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27530 Valid, 9663 Invalid, 1102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:56:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13454 states. [2023-11-29 00:56:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13454 to 12662. [2023-11-29 00:56:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12662 states, 12660 states have (on average 1.3412322274881516) internal successors, (16980), 12661 states have internal predecessors, (16980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12662 states to 12662 states and 16980 transitions. [2023-11-29 00:56:23,146 INFO L78 Accepts]: Start accepts. Automaton has 12662 states and 16980 transitions. Word has length 98 [2023-11-29 00:56:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:23,146 INFO L495 AbstractCegarLoop]: Abstraction has 12662 states and 16980 transitions. [2023-11-29 00:56:23,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12662 states and 16980 transitions. [2023-11-29 00:56:23,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 00:56:23,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:23,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:23,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:56:23,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:56:23,348 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:23,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1190406581, now seen corresponding path program 1 times [2023-11-29 00:56:23,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:23,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274764710] [2023-11-29 00:56:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:23,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:24,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:24,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274764710] [2023-11-29 00:56:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274764710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:24,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686048311] [2023-11-29 00:56:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:24,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:24,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:24,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:24,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:56:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:24,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:56:24,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:25,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:26,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686048311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:26,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:26,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-11-29 00:56:26,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887945503] [2023-11-29 00:56:26,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:26,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 00:56:26,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:26,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 00:56:26,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:56:26,137 INFO L87 Difference]: Start difference. First operand 12662 states and 16980 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:32,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:32,113 INFO L93 Difference]: Finished difference Result 64774 states and 84699 transitions. [2023-11-29 00:56:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 00:56:32,114 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-11-29 00:56:32,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:32,153 INFO L225 Difference]: With dead ends: 64774 [2023-11-29 00:56:32,154 INFO L226 Difference]: Without dead ends: 54016 [2023-11-29 00:56:32,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1531, Invalid=7025, Unknown=0, NotChecked=0, Total=8556 [2023-11-29 00:56:32,168 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 23781 mSDsluCounter, 9846 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23781 SdHoareTripleChecker+Valid, 11371 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:32,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23781 Valid, 11371 Invalid, 1979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:56:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54016 states. [2023-11-29 00:56:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54016 to 49672. [2023-11-29 00:56:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49672 states, 49670 states have (on average 1.294866116368029) internal successors, (64316), 49671 states have internal predecessors, (64316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49672 states to 49672 states and 64316 transitions. [2023-11-29 00:56:33,818 INFO L78 Accepts]: Start accepts. Automaton has 49672 states and 64316 transitions. Word has length 98 [2023-11-29 00:56:33,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:33,818 INFO L495 AbstractCegarLoop]: Abstraction has 49672 states and 64316 transitions. [2023-11-29 00:56:33,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:33,818 INFO L276 IsEmpty]: Start isEmpty. Operand 49672 states and 64316 transitions. [2023-11-29 00:56:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 00:56:33,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:33,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:33,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:56:34,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 00:56:34,021 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:34,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 545897423, now seen corresponding path program 1 times [2023-11-29 00:56:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:34,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588547464] [2023-11-29 00:56:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:34,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:34,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588547464] [2023-11-29 00:56:34,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588547464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:34,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968488340] [2023-11-29 00:56:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:34,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:34,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:34,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:34,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:56:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:34,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:56:34,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:35,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:35,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968488340] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:35,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:35,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-29 00:56:35,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242300526] [2023-11-29 00:56:35,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:35,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 00:56:35,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:35,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 00:56:35,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:56:35,908 INFO L87 Difference]: Start difference. First operand 49672 states and 64316 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:38,637 INFO L93 Difference]: Finished difference Result 99519 states and 128062 transitions. [2023-11-29 00:56:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 00:56:38,638 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-29 00:56:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:38,681 INFO L225 Difference]: With dead ends: 99519 [2023-11-29 00:56:38,681 INFO L226 Difference]: Without dead ends: 53572 [2023-11-29 00:56:38,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=690, Invalid=2616, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 00:56:38,705 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 22606 mSDsluCounter, 8046 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22606 SdHoareTripleChecker+Valid, 9576 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:38,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22606 Valid, 9576 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:56:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53572 states. [2023-11-29 00:56:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53572 to 40102. [2023-11-29 00:56:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40102 states, 40100 states have (on average 1.2692768079800498) internal successors, (50898), 40101 states have internal predecessors, (50898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40102 states to 40102 states and 50898 transitions. [2023-11-29 00:56:40,347 INFO L78 Accepts]: Start accepts. Automaton has 40102 states and 50898 transitions. Word has length 99 [2023-11-29 00:56:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:40,347 INFO L495 AbstractCegarLoop]: Abstraction has 40102 states and 50898 transitions. [2023-11-29 00:56:40,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 40102 states and 50898 transitions. [2023-11-29 00:56:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:56:40,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:40,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:40,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:56:40,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 00:56:40,550 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:40,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash -773157797, now seen corresponding path program 1 times [2023-11-29 00:56:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:40,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165074577] [2023-11-29 00:56:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:40,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:40,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165074577] [2023-11-29 00:56:40,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165074577] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:40,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886759474] [2023-11-29 00:56:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:40,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:40,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:40,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:40,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:56:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:41,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:56:41,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:41,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:43,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886759474] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:43,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:43,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 35 [2023-11-29 00:56:43,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387345345] [2023-11-29 00:56:43,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:43,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 00:56:43,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:43,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 00:56:43,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:56:43,214 INFO L87 Difference]: Start difference. First operand 40102 states and 50898 transitions. Second operand has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:48,445 INFO L93 Difference]: Finished difference Result 91459 states and 114374 transitions. [2023-11-29 00:56:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 00:56:48,446 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:56:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:48,495 INFO L225 Difference]: With dead ends: 91459 [2023-11-29 00:56:48,495 INFO L226 Difference]: Without dead ends: 56069 [2023-11-29 00:56:48,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1152, Invalid=4398, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 00:56:48,513 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 13479 mSDsluCounter, 14014 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13479 SdHoareTripleChecker+Valid, 15537 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:48,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13479 Valid, 15537 Invalid, 1158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:56:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56069 states. [2023-11-29 00:56:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56069 to 48341. [2023-11-29 00:56:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48341 states, 48339 states have (on average 1.256004468441631) internal successors, (60714), 48340 states have internal predecessors, (60714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48341 states to 48341 states and 60714 transitions. [2023-11-29 00:56:51,055 INFO L78 Accepts]: Start accepts. Automaton has 48341 states and 60714 transitions. Word has length 100 [2023-11-29 00:56:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:56:51,055 INFO L495 AbstractCegarLoop]: Abstraction has 48341 states and 60714 transitions. [2023-11-29 00:56:51,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 48341 states and 60714 transitions. [2023-11-29 00:56:51,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 00:56:51,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:56:51,058 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:51,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:56:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:51,259 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:56:51,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1322403255, now seen corresponding path program 1 times [2023-11-29 00:56:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:51,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711920383] [2023-11-29 00:56:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:51,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711920383] [2023-11-29 00:56:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711920383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095834139] [2023-11-29 00:56:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:51,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:51,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:51,853 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:51,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:56:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:52,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:56:52,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:52,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:53,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095834139] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:53,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:53,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 00:56:53,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647360702] [2023-11-29 00:56:53,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:53,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:56:53,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:53,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:56:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:56:53,991 INFO L87 Difference]: Start difference. First operand 48341 states and 60714 transitions. Second operand has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:56:58,320 INFO L93 Difference]: Finished difference Result 141081 states and 176066 transitions. [2023-11-29 00:56:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:56:58,321 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-11-29 00:56:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:56:58,410 INFO L225 Difference]: With dead ends: 141081 [2023-11-29 00:56:58,410 INFO L226 Difference]: Without dead ends: 99712 [2023-11-29 00:56:58,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:56:58,437 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 19667 mSDsluCounter, 7966 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19667 SdHoareTripleChecker+Valid, 9502 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:56:58,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19667 Valid, 9502 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:56:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99712 states. [2023-11-29 00:57:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99712 to 95048. [2023-11-29 00:57:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95048 states, 95046 states have (on average 1.2398838457168109) internal successors, (117846), 95047 states have internal predecessors, (117846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95048 states to 95048 states and 117846 transitions. [2023-11-29 00:57:02,622 INFO L78 Accepts]: Start accepts. Automaton has 95048 states and 117846 transitions. Word has length 101 [2023-11-29 00:57:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:02,623 INFO L495 AbstractCegarLoop]: Abstraction has 95048 states and 117846 transitions. [2023-11-29 00:57:02,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 95048 states and 117846 transitions. [2023-11-29 00:57:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 00:57:02,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:02,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:02,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:02,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:02,827 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:57:02,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1425391795, now seen corresponding path program 1 times [2023-11-29 00:57:02,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:02,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332334533] [2023-11-29 00:57:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:02,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:03,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:03,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332334533] [2023-11-29 00:57:03,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332334533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:03,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964541491] [2023-11-29 00:57:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:03,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:03,831 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:03,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:57:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:03,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:57:03,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:05,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:06,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964541491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:06,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:06,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-11-29 00:57:06,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595656579] [2023-11-29 00:57:06,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:06,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 00:57:06,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:06,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 00:57:06,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:57:06,721 INFO L87 Difference]: Start difference. First operand 95048 states and 117846 transitions. Second operand has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:24,630 INFO L93 Difference]: Finished difference Result 263906 states and 325037 transitions. [2023-11-29 00:57:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 00:57:24,631 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 00:57:24,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:24,831 INFO L225 Difference]: With dead ends: 263906 [2023-11-29 00:57:24,831 INFO L226 Difference]: Without dead ends: 225100 [2023-11-29 00:57:24,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2836, Invalid=12664, Unknown=0, NotChecked=0, Total=15500 [2023-11-29 00:57:24,854 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 18223 mSDsluCounter, 24115 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18223 SdHoareTripleChecker+Valid, 25684 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:24,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18223 Valid, 25684 Invalid, 2817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 00:57:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225100 states. [2023-11-29 00:57:29,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225100 to 80496. [2023-11-29 00:57:29,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80496 states, 80494 states have (on average 1.2379804705940816) internal successors, (99650), 80495 states have internal predecessors, (99650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80496 states to 80496 states and 99650 transitions. [2023-11-29 00:57:29,458 INFO L78 Accepts]: Start accepts. Automaton has 80496 states and 99650 transitions. Word has length 102 [2023-11-29 00:57:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:29,458 INFO L495 AbstractCegarLoop]: Abstraction has 80496 states and 99650 transitions. [2023-11-29 00:57:29,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 80496 states and 99650 transitions. [2023-11-29 00:57:29,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 00:57:29,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:29,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:29,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:57:29,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:29,661 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:57:29,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash 578499507, now seen corresponding path program 1 times [2023-11-29 00:57:29,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:29,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338381426] [2023-11-29 00:57:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:29,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:30,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338381426] [2023-11-29 00:57:30,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338381426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861903546] [2023-11-29 00:57:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:30,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:30,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:30,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:30,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:57:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:30,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:57:30,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:31,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861903546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:32,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2023-11-29 00:57:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788231552] [2023-11-29 00:57:32,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:32,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 00:57:32,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:32,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 00:57:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:57:32,666 INFO L87 Difference]: Start difference. First operand 80496 states and 99650 transitions. Second operand has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:57:47,794 INFO L93 Difference]: Finished difference Result 179543 states and 221206 transitions. [2023-11-29 00:57:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-29 00:57:47,795 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 00:57:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:57:47,909 INFO L225 Difference]: With dead ends: 179543 [2023-11-29 00:57:47,909 INFO L226 Difference]: Without dead ends: 138715 [2023-11-29 00:57:47,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3677 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2474, Invalid=10182, Unknown=0, NotChecked=0, Total=12656 [2023-11-29 00:57:47,927 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 14917 mSDsluCounter, 20961 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14917 SdHoareTripleChecker+Valid, 22572 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:57:47,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14917 Valid, 22572 Invalid, 2515 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [84 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 00:57:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138715 states. [2023-11-29 00:57:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138715 to 61768. [2023-11-29 00:57:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61768 states, 61766 states have (on average 1.2397597383673866) internal successors, (76575), 61767 states have internal predecessors, (76575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61768 states to 61768 states and 76575 transitions. [2023-11-29 00:57:51,566 INFO L78 Accepts]: Start accepts. Automaton has 61768 states and 76575 transitions. Word has length 102 [2023-11-29 00:57:51,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:57:51,566 INFO L495 AbstractCegarLoop]: Abstraction has 61768 states and 76575 transitions. [2023-11-29 00:57:51,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 61768 states and 76575 transitions. [2023-11-29 00:57:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 00:57:51,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:57:51,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:51,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:57:51,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:51,769 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:57:51,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:51,769 INFO L85 PathProgramCache]: Analyzing trace with hash -652250555, now seen corresponding path program 1 times [2023-11-29 00:57:51,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258223333] [2023-11-29 00:57:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:51,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258223333] [2023-11-29 00:57:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258223333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450343505] [2023-11-29 00:57:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:54,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:54,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:54,465 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:54,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:57:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:54,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:57:54,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:56,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:58:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450343505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:58:00,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:58:00,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17, 18] total 66 [2023-11-29 00:58:00,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347011723] [2023-11-29 00:58:00,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:58:00,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-29 00:58:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:00,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-29 00:58:00,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3985, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 00:58:00,842 INFO L87 Difference]: Start difference. First operand 61768 states and 76575 transitions. Second operand has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:31,703 INFO L93 Difference]: Finished difference Result 181596 states and 222602 transitions. [2023-11-29 00:59:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2023-11-29 00:59:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-29 00:59:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:31,824 INFO L225 Difference]: With dead ends: 181596 [2023-11-29 00:59:31,824 INFO L226 Difference]: Without dead ends: 154982 [2023-11-29 00:59:31,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65418 ImplicationChecksByTransitivity, 69.0s TimeCoverageRelationStatistics Valid=28073, Invalid=145399, Unknown=0, NotChecked=0, Total=173472 [2023-11-29 00:59:31,853 INFO L413 NwaCegarLoop]: 1749 mSDtfsCounter, 32655 mSDsluCounter, 41826 mSDsCounter, 0 mSdLazyCounter, 19388 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32655 SdHoareTripleChecker+Valid, 43575 SdHoareTripleChecker+Invalid, 19564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 19388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:31,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32655 Valid, 43575 Invalid, 19564 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [176 Valid, 19388 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-11-29 00:59:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154982 states. [2023-11-29 00:59:37,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154982 to 92956. [2023-11-29 00:59:38,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92956 states, 92954 states have (on average 1.2357940486692343) internal successors, (114872), 92955 states have internal predecessors, (114872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92956 states to 92956 states and 114872 transitions. [2023-11-29 00:59:38,105 INFO L78 Accepts]: Start accepts. Automaton has 92956 states and 114872 transitions. Word has length 103 [2023-11-29 00:59:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:38,106 INFO L495 AbstractCegarLoop]: Abstraction has 92956 states and 114872 transitions. [2023-11-29 00:59:38,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 92956 states and 114872 transitions. [2023-11-29 00:59:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 00:59:38,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:38,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:38,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 00:59:38,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 00:59:38,309 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:38,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1690707074, now seen corresponding path program 1 times [2023-11-29 00:59:38,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:38,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49194839] [2023-11-29 00:59:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:38,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:38,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49194839] [2023-11-29 00:59:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49194839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:38,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:38,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:59:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072088823] [2023-11-29 00:59:38,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:38,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:59:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:59:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:38,425 INFO L87 Difference]: Start difference. First operand 92956 states and 114872 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:48,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:59:48,446 INFO L93 Difference]: Finished difference Result 96001 states and 119837 transitions. [2023-11-29 00:59:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:59:48,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-11-29 00:59:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:59:48,513 INFO L225 Difference]: With dead ends: 96001 [2023-11-29 00:59:48,514 INFO L226 Difference]: Without dead ends: 94460 [2023-11-29 00:59:48,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:59:48,525 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 810 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3739 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 4402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:59:48,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 893 Invalid, 4402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3739 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 00:59:48,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94460 states. [2023-11-29 00:59:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94460 to 94458. [2023-11-29 00:59:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94458 states, 94456 states have (on average 1.232753874820022) internal successors, (116441), 94457 states have internal predecessors, (116441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94458 states to 94458 states and 116441 transitions. [2023-11-29 00:59:54,465 INFO L78 Accepts]: Start accepts. Automaton has 94458 states and 116441 transitions. Word has length 118 [2023-11-29 00:59:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:59:54,465 INFO L495 AbstractCegarLoop]: Abstraction has 94458 states and 116441 transitions. [2023-11-29 00:59:54,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 94458 states and 116441 transitions. [2023-11-29 00:59:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-29 00:59:54,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:59:54,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:54,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 00:59:54,480 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:59:54,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash 683817149, now seen corresponding path program 1 times [2023-11-29 00:59:54,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:54,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114948031] [2023-11-29 00:59:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:54,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:59:54,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:54,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114948031] [2023-11-29 00:59:54,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114948031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:59:54,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:59:54,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:59:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163324024] [2023-11-29 00:59:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:59:54,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:59:54,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:54,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:59:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:59:54,564 INFO L87 Difference]: Start difference. First operand 94458 states and 116441 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:00:02,951 INFO L93 Difference]: Finished difference Result 100468 states and 124506 transitions. [2023-11-29 01:00:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:00:02,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2023-11-29 01:00:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:00:03,028 INFO L225 Difference]: With dead ends: 100468 [2023-11-29 01:00:03,028 INFO L226 Difference]: Without dead ends: 97462 [2023-11-29 01:00:03,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:00:03,045 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 801 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 827 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:00:03,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 670 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [827 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 01:00:03,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97462 states. [2023-11-29 01:00:09,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97462 to 97462. [2023-11-29 01:00:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97462 states, 97460 states have (on average 1.229211984403858) internal successors, (119799), 97461 states have internal predecessors, (119799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97462 states to 97462 states and 119799 transitions. [2023-11-29 01:00:09,673 INFO L78 Accepts]: Start accepts. Automaton has 97462 states and 119799 transitions. Word has length 156 [2023-11-29 01:00:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:00:09,673 INFO L495 AbstractCegarLoop]: Abstraction has 97462 states and 119799 transitions. [2023-11-29 01:00:09,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 97462 states and 119799 transitions. [2023-11-29 01:00:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 01:00:09,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:00:09,688 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:00:09,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 01:00:09,688 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:00:09,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:00:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash -206892047, now seen corresponding path program 1 times [2023-11-29 01:00:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:00:09,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089025496] [2023-11-29 01:00:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:00:09,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:00:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:00:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:10,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:00:10,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089025496] [2023-11-29 01:00:10,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089025496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:00:10,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630720699] [2023-11-29 01:00:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:00:10,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:00:10,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:00:10,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:00:10,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:00:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:00:10,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:00:10,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:00:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 76 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:11,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:00:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630720699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:00:12,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:00:12,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-11-29 01:00:12,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732166879] [2023-11-29 01:00:12,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:00:12,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 01:00:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:00:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 01:00:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:00:12,961 INFO L87 Difference]: Start difference. First operand 97462 states and 119799 transitions. Second operand has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:00:30,659 INFO L93 Difference]: Finished difference Result 237002 states and 292360 transitions. [2023-11-29 01:00:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-11-29 01:00:30,660 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-11-29 01:00:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:00:30,796 INFO L225 Difference]: With dead ends: 237002 [2023-11-29 01:00:30,796 INFO L226 Difference]: Without dead ends: 168250 [2023-11-29 01:00:30,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3083, Invalid=14209, Unknown=0, NotChecked=0, Total=17292 [2023-11-29 01:00:30,822 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 18461 mSDsluCounter, 20164 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18461 SdHoareTripleChecker+Valid, 21700 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:00:30,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18461 Valid, 21700 Invalid, 2391 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [81 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:00:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168250 states. [2023-11-29 01:00:37,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168250 to 94934. [2023-11-29 01:00:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94934 states, 94932 states have (on average 1.2204103990224582) internal successors, (115856), 94933 states have internal predecessors, (115856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94934 states to 94934 states and 115856 transitions. [2023-11-29 01:00:37,966 INFO L78 Accepts]: Start accepts. Automaton has 94934 states and 115856 transitions. Word has length 157 [2023-11-29 01:00:37,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:00:37,966 INFO L495 AbstractCegarLoop]: Abstraction has 94934 states and 115856 transitions. [2023-11-29 01:00:37,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 94934 states and 115856 transitions. [2023-11-29 01:00:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 01:00:37,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:00:37,976 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:00:37,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 01:00:38,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 01:00:38,176 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:00:38,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:00:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash -131074223, now seen corresponding path program 1 times [2023-11-29 01:00:38,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:00:38,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954564079] [2023-11-29 01:00:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:00:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:00:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:00:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:38,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:00:38,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954564079] [2023-11-29 01:00:38,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954564079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:00:38,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430457739] [2023-11-29 01:00:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:00:38,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:00:38,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:00:38,891 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:00:38,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:00:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:00:39,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:00:39,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:00:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 42 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:40,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:00:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430457739] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:00:42,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:00:42,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-11-29 01:00:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194289844] [2023-11-29 01:00:42,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:00:42,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 01:00:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:00:42,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 01:00:42,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:00:42,328 INFO L87 Difference]: Start difference. First operand 94934 states and 115856 transitions. Second operand has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:00:49,969 INFO L93 Difference]: Finished difference Result 151972 states and 186231 transitions. [2023-11-29 01:00:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:00:49,970 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2023-11-29 01:00:49,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:00:50,054 INFO L225 Difference]: With dead ends: 151972 [2023-11-29 01:00:50,054 INFO L226 Difference]: Without dead ends: 107286 [2023-11-29 01:00:50,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 01:00:50,070 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 14973 mSDsluCounter, 13542 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14973 SdHoareTripleChecker+Valid, 15049 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:00:50,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14973 Valid, 15049 Invalid, 891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:00:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107286 states. [2023-11-29 01:00:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107286 to 94934. [2023-11-29 01:00:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94934 states, 94932 states have (on average 1.2151645388277925) internal successors, (115358), 94933 states have internal predecessors, (115358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94934 states to 94934 states and 115358 transitions. [2023-11-29 01:00:57,201 INFO L78 Accepts]: Start accepts. Automaton has 94934 states and 115358 transitions. Word has length 158 [2023-11-29 01:00:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:00:57,201 INFO L495 AbstractCegarLoop]: Abstraction has 94934 states and 115358 transitions. [2023-11-29 01:00:57,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 94934 states and 115358 transitions. [2023-11-29 01:00:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 01:00:57,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:00:57,209 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:00:57,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:00:57,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 01:00:57,409 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:00:57,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:00:57,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2022996503, now seen corresponding path program 1 times [2023-11-29 01:00:57,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:00:57,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361275185] [2023-11-29 01:00:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:00:57,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:00:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:00:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 47 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:58,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:00:58,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361275185] [2023-11-29 01:00:58,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361275185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:00:58,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386489223] [2023-11-29 01:00:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:00:58,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:00:58,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:00:58,154 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:00:58,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:00:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:00:58,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:00:58,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:00:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:00:59,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 21 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:01,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386489223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:01,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:01,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-11-29 01:01:01,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720271] [2023-11-29 01:01:01,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:01,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 01:01:01,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 01:01:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:01:01,495 INFO L87 Difference]: Start difference. First operand 94934 states and 115358 transitions. Second operand has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:15,468 INFO L93 Difference]: Finished difference Result 174436 states and 212568 transitions. [2023-11-29 01:01:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-29 01:01:15,468 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2023-11-29 01:01:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:15,554 INFO L225 Difference]: With dead ends: 174436 [2023-11-29 01:01:15,554 INFO L226 Difference]: Without dead ends: 107726 [2023-11-29 01:01:15,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2153 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1750, Invalid=7756, Unknown=0, NotChecked=0, Total=9506 [2023-11-29 01:01:15,573 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 22950 mSDsluCounter, 17238 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22950 SdHoareTripleChecker+Valid, 18761 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:15,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22950 Valid, 18761 Invalid, 2443 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:01:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107726 states. [2023-11-29 01:01:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107726 to 94934. [2023-11-29 01:01:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94934 states, 94932 states have (on average 1.204198794926895) internal successors, (114317), 94933 states have internal predecessors, (114317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94934 states to 94934 states and 114317 transitions. [2023-11-29 01:01:23,893 INFO L78 Accepts]: Start accepts. Automaton has 94934 states and 114317 transitions. Word has length 158 [2023-11-29 01:01:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:23,893 INFO L495 AbstractCegarLoop]: Abstraction has 94934 states and 114317 transitions. [2023-11-29 01:01:23,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 94934 states and 114317 transitions. [2023-11-29 01:01:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 01:01:23,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:23,905 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:23,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:01:24,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 01:01:24,106 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:01:24,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1219131585, now seen corresponding path program 1 times [2023-11-29 01:01:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:24,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44285479] [2023-11-29 01:01:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:24,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:25,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:25,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44285479] [2023-11-29 01:01:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44285479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:25,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130826523] [2023-11-29 01:01:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:25,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:25,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:25,029 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:25,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:01:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:25,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:01:25,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:26,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:28,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130826523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:28,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:28,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-11-29 01:01:28,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021196921] [2023-11-29 01:01:28,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:28,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:01:28,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:28,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:01:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:01:28,891 INFO L87 Difference]: Start difference. First operand 94934 states and 114317 transitions. Second operand has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:37,388 INFO L93 Difference]: Finished difference Result 146118 states and 176290 transitions. [2023-11-29 01:01:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:01:37,389 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2023-11-29 01:01:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:37,459 INFO L225 Difference]: With dead ends: 146118 [2023-11-29 01:01:37,459 INFO L226 Difference]: Without dead ends: 95698 [2023-11-29 01:01:37,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=474, Invalid=1506, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 01:01:37,480 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 16102 mSDsluCounter, 12261 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16102 SdHoareTripleChecker+Valid, 13767 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:37,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16102 Valid, 13767 Invalid, 833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:01:37,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95698 states. [2023-11-29 01:01:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95698 to 94934. [2023-11-29 01:01:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94934 states, 94932 states have (on average 1.197372856360342) internal successors, (113669), 94933 states have internal predecessors, (113669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94934 states to 94934 states and 113669 transitions. [2023-11-29 01:01:45,935 INFO L78 Accepts]: Start accepts. Automaton has 94934 states and 113669 transitions. Word has length 160 [2023-11-29 01:01:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:45,935 INFO L495 AbstractCegarLoop]: Abstraction has 94934 states and 113669 transitions. [2023-11-29 01:01:45,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 94934 states and 113669 transitions. [2023-11-29 01:01:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 01:01:45,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:45,944 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:45,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:01:46,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 01:01:46,145 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:01:46,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash -491598411, now seen corresponding path program 1 times [2023-11-29 01:01:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501345746] [2023-11-29 01:01:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:46,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:47,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:47,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501345746] [2023-11-29 01:01:47,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501345746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:47,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982494223] [2023-11-29 01:01:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:47,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:47,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:47,128 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:47,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:01:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:47,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:01:47,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:51,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982494223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:55,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:55,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 22] total 62 [2023-11-29 01:01:55,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010486653] [2023-11-29 01:01:55,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:55,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 01:01:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 01:01:55,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3431, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 01:01:55,969 INFO L87 Difference]: Start difference. First operand 94934 states and 113669 transitions. Second operand has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:37,993 INFO L93 Difference]: Finished difference Result 422845 states and 505280 transitions. [2023-11-29 01:03:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2023-11-29 01:03:37,994 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-11-29 01:03:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:38,339 INFO L225 Difference]: With dead ends: 422845 [2023-11-29 01:03:38,340 INFO L226 Difference]: Without dead ends: 372725 [2023-11-29 01:03:38,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47846 ImplicationChecksByTransitivity, 60.1s TimeCoverageRelationStatistics Valid=17043, Invalid=103019, Unknown=0, NotChecked=0, Total=120062 [2023-11-29 01:03:38,388 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 21571 mSDsluCounter, 39076 mSDsCounter, 0 mSdLazyCounter, 6696 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21571 SdHoareTripleChecker+Valid, 40671 SdHoareTripleChecker+Invalid, 6945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 6696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:38,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21571 Valid, 40671 Invalid, 6945 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [249 Valid, 6696 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 01:03:38,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372725 states. [2023-11-29 01:04:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372725 to 278278. [2023-11-29 01:04:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278278 states, 278276 states have (on average 1.1963626040334057) internal successors, (332919), 278277 states have internal predecessors, (332919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278278 states to 278278 states and 332919 transitions. [2023-11-29 01:04:07,950 INFO L78 Accepts]: Start accepts. Automaton has 278278 states and 332919 transitions. Word has length 161 [2023-11-29 01:04:07,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:07,950 INFO L495 AbstractCegarLoop]: Abstraction has 278278 states and 332919 transitions. [2023-11-29 01:04:07,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 278278 states and 332919 transitions. [2023-11-29 01:04:07,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 01:04:07,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:07,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:07,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:04:08,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:08,166 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:08,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:08,166 INFO L85 PathProgramCache]: Analyzing trace with hash -92855023, now seen corresponding path program 1 times [2023-11-29 01:04:08,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:08,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542852168] [2023-11-29 01:04:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:08,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542852168] [2023-11-29 01:04:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542852168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:09,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344315633] [2023-11-29 01:04:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:09,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:09,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:09,755 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:09,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:04:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:09,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:04:09,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:11,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:15,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344315633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:15,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:04:15,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 53 [2023-11-29 01:04:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129989683] [2023-11-29 01:04:15,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:15,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 01:04:15,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 01:04:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 01:04:15,493 INFO L87 Difference]: Start difference. First operand 278278 states and 332919 transitions. Second operand has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:06,184 INFO L93 Difference]: Finished difference Result 558455 states and 667670 transitions. [2023-11-29 01:05:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 01:05:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-11-29 01:05:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:06,704 INFO L225 Difference]: With dead ends: 558455 [2023-11-29 01:05:06,704 INFO L226 Difference]: Without dead ends: 480278 [2023-11-29 01:05:06,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3435 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2410, Invalid=11870, Unknown=0, NotChecked=0, Total=14280 [2023-11-29 01:05:06,784 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 24645 mSDsluCounter, 26898 mSDsCounter, 0 mSdLazyCounter, 2663 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24645 SdHoareTripleChecker+Valid, 28455 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:06,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24645 Valid, 28455 Invalid, 2812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 2663 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 01:05:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480278 states. [2023-11-29 01:05:46,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480278 to 346694. [2023-11-29 01:05:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346694 states, 346692 states have (on average 1.1927936035443565) internal successors, (413532), 346693 states have internal predecessors, (413532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346694 states to 346694 states and 413532 transitions. [2023-11-29 01:05:47,106 INFO L78 Accepts]: Start accepts. Automaton has 346694 states and 413532 transitions. Word has length 161 [2023-11-29 01:05:47,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:47,107 INFO L495 AbstractCegarLoop]: Abstraction has 346694 states and 413532 transitions. [2023-11-29 01:05:47,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 346694 states and 413532 transitions. [2023-11-29 01:05:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 01:05:47,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:47,404 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:47,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:05:47,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 01:05:47,605 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:47,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:47,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1481785931, now seen corresponding path program 1 times [2023-11-29 01:05:47,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:47,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876651070] [2023-11-29 01:05:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:47,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:49,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:49,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876651070] [2023-11-29 01:05:49,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876651070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:49,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188923555] [2023-11-29 01:05:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:49,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:49,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:49,530 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:49,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46d863d7-e63e-4384-8f91-cdfaf9e800ad/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:05:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:49,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 01:05:49,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:52,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:59,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188923555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:59,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:05:59,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-11-29 01:05:59,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067050636] [2023-11-29 01:05:59,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:59,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-11-29 01:05:59,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:59,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-11-29 01:05:59,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4320, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:05:59,931 INFO L87 Difference]: Start difference. First operand 346694 states and 413532 transitions. Second operand has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)