./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p16.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/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_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/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 64bit --witnessprinter.graph.data.programhash d842525d6c024e37f889e3e19a1cef4a07157b3d33d75f554921b8e5a37c2dd0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:42:37,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:42:37,624 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 02:42:37,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:42:37,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:42:37,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:42:37,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:42:37,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:42:37,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:42:37,652 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:42:37,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:42:37,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:42:37,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:42:37,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:42:37,655 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:42:37,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:42:37,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:42:37,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:42:37,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:42:37,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:42:37,658 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:42:37,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:42:37,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:42:37,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:42:37,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:42:37,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:42:37,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:42:37,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:42:37,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:42:37,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:42:37,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:42:37,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:42:37,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:42:37,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:42:37,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:42:37,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:42:37,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:42:37,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:42:37,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:42:37,664 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_df5e1f09-0436-4127-a280-1365b466f3bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d842525d6c024e37f889e3e19a1cef4a07157b3d33d75f554921b8e5a37c2dd0 [2023-11-29 02:42:37,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:42:37,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:42:37,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:42:37,900 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:42:37,901 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:42:37,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p16.c [2023-11-29 02:42:40,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:42:40,800 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:42:40,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p16.c [2023-11-29 02:42:40,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/data/dedb193cf/e4c64105f4714a979f6b0d93df226467/FLAG1b44d257d [2023-11-29 02:42:40,822 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/data/dedb193cf/e4c64105f4714a979f6b0d93df226467 [2023-11-29 02:42:40,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:42:40,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:42:40,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:42:40,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:42:40,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:42:40,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:42:40" (1/1) ... [2023-11-29 02:42:40,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a805236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:40, skipping insertion in model container [2023-11-29 02:42:40,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:42:40" (1/1) ... [2023-11-29 02:42:40,859 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:42:40,978 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_df5e1f09-0436-4127-a280-1365b466f3bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p16.c[1266,1279] [2023-11-29 02:42:41,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:42:41,037 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:42:41,047 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_df5e1f09-0436-4127-a280-1365b466f3bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p16.c[1266,1279] [2023-11-29 02:42:41,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:42:41,090 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:42:41,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41 WrapperNode [2023-11-29 02:42:41,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:42:41,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:42:41,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:42:41,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:42:41,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,152 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 283 [2023-11-29 02:42:41,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:42:41,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:42:41,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:42:41,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:42:41,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,188 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 02:42:41,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:42:41,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:42:41,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:42:41,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:42:41,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (1/1) ... [2023-11-29 02:42:41,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:42:41,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:41,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:42:41,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:42:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:42:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:42:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:42:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:42:41,391 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:42:41,393 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:42:41,690 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:42:41,716 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:42:41,717 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:42:41,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:42:41 BoogieIcfgContainer [2023-11-29 02:42:41,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:42:41,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:42:41,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:42:41,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:42:41,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:42:40" (1/3) ... [2023-11-29 02:42:41,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4910c150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:42:41, skipping insertion in model container [2023-11-29 02:42:41,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:42:41" (2/3) ... [2023-11-29 02:42:41,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4910c150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:42:41, skipping insertion in model container [2023-11-29 02:42:41,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:42:41" (3/3) ... [2023-11-29 02:42:41,726 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p16.c [2023-11-29 02:42:41,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:42:41,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:42:41,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:42:41,792 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;@5c86171a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:42:41,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:42:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 34 states have internal predecessors, (55), 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 02:42:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 02:42:41,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:41,802 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] [2023-11-29 02:42:41,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:41,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2037151720, now seen corresponding path program 1 times [2023-11-29 02:42:41,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:41,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611170646] [2023-11-29 02:42:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:41,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:42,239 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 02:42:42,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611170646] [2023-11-29 02:42:42,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611170646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:42,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:42,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:42:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972435749] [2023-11-29 02:42:42,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:42,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:42:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:42,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:42:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:42:42,291 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 34 states have internal predecessors, (55), 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 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 02:42:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:42,332 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2023-11-29 02:42:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:42:42,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-29 02:42:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:42,342 INFO L225 Difference]: With dead ends: 60 [2023-11-29 02:42:42,342 INFO L226 Difference]: Without dead ends: 35 [2023-11-29 02:42:42,345 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 02:42:42,349 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:42,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 139 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:42:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-29 02:42:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-29 02:42:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 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 02:42:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2023-11-29 02:42:42,383 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 20 [2023-11-29 02:42:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:42,383 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2023-11-29 02:42:42,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 02:42:42,384 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2023-11-29 02:42:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 02:42:42,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:42,385 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] [2023-11-29 02:42:42,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:42:42,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:42,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1274531164, now seen corresponding path program 1 times [2023-11-29 02:42:42,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:42,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116316429] [2023-11-29 02:42:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:42,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:42,505 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 02:42:42,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116316429] [2023-11-29 02:42:42,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116316429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:42,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:42,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:42:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060343534] [2023-11-29 02:42:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:42,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:42:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:42:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:42:42,509 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 02:42:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:42,536 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2023-11-29 02:42:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:42:42,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2023-11-29 02:42:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:42,538 INFO L225 Difference]: With dead ends: 63 [2023-11-29 02:42:42,538 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 02:42:42,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 02:42:42,540 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:42,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 137 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:42:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 02:42:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-11-29 02:42:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 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 02:42:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2023-11-29 02:42:42,546 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 55 transitions. Word has length 21 [2023-11-29 02:42:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:42,547 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 55 transitions. [2023-11-29 02:42:42,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 02:42:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2023-11-29 02:42:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 02:42:42,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:42,548 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] [2023-11-29 02:42:42,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:42:42,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:42,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:42,549 INFO L85 PathProgramCache]: Analyzing trace with hash 645328050, now seen corresponding path program 1 times [2023-11-29 02:42:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:42,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454363550] [2023-11-29 02:42:42,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:42,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:42,963 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 02:42:42,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:42,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454363550] [2023-11-29 02:42:42,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454363550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:42,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:42,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:42:42,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765511892] [2023-11-29 02:42:42,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:42,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:42:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:42:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:42:42,966 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 02:42:43,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:43,223 INFO L93 Difference]: Finished difference Result 124 states and 180 transitions. [2023-11-29 02:42:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:42:43,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2023-11-29 02:42:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:43,225 INFO L225 Difference]: With dead ends: 124 [2023-11-29 02:42:43,225 INFO L226 Difference]: Without dead ends: 97 [2023-11-29 02:42:43,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:42:43,227 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 178 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:43,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 235 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:42:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-29 02:42:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 43. [2023-11-29 02:42:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 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 02:42:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 62 transitions. [2023-11-29 02:42:43,236 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 62 transitions. Word has length 22 [2023-11-29 02:42:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:43,236 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 62 transitions. [2023-11-29 02:42:43,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 02:42:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 62 transitions. [2023-11-29 02:42:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 02:42:43,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:43,238 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] [2023-11-29 02:42:43,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:42:43,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:43,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:43,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1874631884, now seen corresponding path program 1 times [2023-11-29 02:42:43,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:43,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159178463] [2023-11-29 02:42:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:43,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:43,751 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 02:42:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159178463] [2023-11-29 02:42:43,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159178463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:43,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:43,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:42:43,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127837867] [2023-11-29 02:42:43,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:43,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:42:43,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:42:43,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:42:43,753 INFO L87 Difference]: Start difference. First operand 43 states and 62 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 02:42:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:43,926 INFO L93 Difference]: Finished difference Result 139 states and 196 transitions. [2023-11-29 02:42:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:42:43,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2023-11-29 02:42:43,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:43,931 INFO L225 Difference]: With dead ends: 139 [2023-11-29 02:42:43,931 INFO L226 Difference]: Without dead ends: 106 [2023-11-29 02:42:43,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:42:43,933 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 191 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:43,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 234 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:42:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-29 02:42:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 47. [2023-11-29 02:42:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 46 states have internal predecessors, (67), 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 02:42:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2023-11-29 02:42:43,942 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2023-11-29 02:42:43,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:43,943 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2023-11-29 02:42:43,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 02:42:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2023-11-29 02:42:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 02:42:43,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:43,944 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 02:42:43,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:42:43,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:43,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:43,945 INFO L85 PathProgramCache]: Analyzing trace with hash 130239938, now seen corresponding path program 1 times [2023-11-29 02:42:43,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:43,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882407205] [2023-11-29 02:42:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:43,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:44,223 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 02:42:44,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:44,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882407205] [2023-11-29 02:42:44,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882407205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:44,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:44,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:42:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182396204] [2023-11-29 02:42:44,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:44,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:42:44,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:42:44,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:42:44,226 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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 02:42:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:44,514 INFO L93 Difference]: Finished difference Result 155 states and 218 transitions. [2023-11-29 02:42:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:42:44,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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 02:42:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:44,515 INFO L225 Difference]: With dead ends: 155 [2023-11-29 02:42:44,516 INFO L226 Difference]: Without dead ends: 118 [2023-11-29 02:42:44,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:42:44,517 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 227 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:44,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 323 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:42:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-29 02:42:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 54. [2023-11-29 02:42:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 53 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 02:42:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 77 transitions. [2023-11-29 02:42:44,526 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 77 transitions. Word has length 23 [2023-11-29 02:42:44,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:44,526 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 77 transitions. [2023-11-29 02:42:44,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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 02:42:44,526 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 77 transitions. [2023-11-29 02:42:44,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 02:42:44,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:44,527 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 02:42:44,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:42:44,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:44,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash -551494896, now seen corresponding path program 1 times [2023-11-29 02:42:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618368849] [2023-11-29 02:42:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:44,668 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 02:42:44,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:44,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618368849] [2023-11-29 02:42:44,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618368849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:44,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:44,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:42:44,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486339934] [2023-11-29 02:42:44,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:44,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:42:44,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:42:44,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:42:44,671 INFO L87 Difference]: Start difference. First operand 54 states and 77 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 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 02:42:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:44,757 INFO L93 Difference]: Finished difference Result 129 states and 180 transitions. [2023-11-29 02:42:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:42:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 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 02:42:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:44,759 INFO L225 Difference]: With dead ends: 129 [2023-11-29 02:42:44,759 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 02:42:44,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:42:44,761 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 109 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:44,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 151 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:42:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 02:42:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 56. [2023-11-29 02:42:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 55 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 02:42:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2023-11-29 02:42:44,770 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 23 [2023-11-29 02:42:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:44,770 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2023-11-29 02:42:44,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 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 02:42:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2023-11-29 02:42:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 02:42:44,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:44,771 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] [2023-11-29 02:42:44,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:42:44,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:44,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash 861254026, now seen corresponding path program 1 times [2023-11-29 02:42:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:44,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371318325] [2023-11-29 02:42:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:44,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:44,928 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 02:42:44,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371318325] [2023-11-29 02:42:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371318325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:44,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:44,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:42:44,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575818019] [2023-11-29 02:42:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:44,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:42:44,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:42:44,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:42:44,930 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 02:42:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:44,979 INFO L93 Difference]: Finished difference Result 115 states and 158 transitions. [2023-11-29 02:42:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:42:44,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2023-11-29 02:42:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:44,981 INFO L225 Difference]: With dead ends: 115 [2023-11-29 02:42:44,981 INFO L226 Difference]: Without dead ends: 71 [2023-11-29 02:42:44,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:42:44,982 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 81 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:44,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 133 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:42:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-29 02:42:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2023-11-29 02:42:44,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 02:42:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2023-11-29 02:42:44,990 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 24 [2023-11-29 02:42:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:44,990 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2023-11-29 02:42:44,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 02:42:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2023-11-29 02:42:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 02:42:44,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:44,992 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 02:42:44,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:42:44,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:44,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash 711684316, now seen corresponding path program 1 times [2023-11-29 02:42:44,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:44,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905322793] [2023-11-29 02:42:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:44,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905322793] [2023-11-29 02:42:45,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905322793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:42:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240708069] [2023-11-29 02:42:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:45,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:45,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:45,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:45,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:42:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:45,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 02:42:45,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:45,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:42:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:42:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240708069] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:42:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:42:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 13] total 21 [2023-11-29 02:42:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562067396] [2023-11-29 02:42:46,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:42:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:46,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:42:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:42:46,137 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 02:42:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:46,271 INFO L93 Difference]: Finished difference Result 138 states and 192 transitions. [2023-11-29 02:42:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:42:46,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 39 [2023-11-29 02:42:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:46,273 INFO L225 Difference]: With dead ends: 138 [2023-11-29 02:42:46,273 INFO L226 Difference]: Without dead ends: 94 [2023-11-29 02:42:46,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2023-11-29 02:42:46,274 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 102 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:46,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 154 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:42:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-29 02:42:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2023-11-29 02:42:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 02:42:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2023-11-29 02:42:46,282 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 39 [2023-11-29 02:42:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:46,283 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2023-11-29 02:42:46,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 02:42:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2023-11-29 02:42:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 02:42:46,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:46,284 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] [2023-11-29 02:42:46,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:42:46,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 02:42:46,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:46,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1365103934, now seen corresponding path program 1 times [2023-11-29 02:42:46,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:46,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542547980] [2023-11-29 02:42:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:46,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:46,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542547980] [2023-11-29 02:42:46,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542547980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:42:46,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117893046] [2023-11-29 02:42:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:46,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:46,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:46,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:46,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:42:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:46,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 02:42:46,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:47,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:42:47,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117893046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:47,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:42:47,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2023-11-29 02:42:47,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563627541] [2023-11-29 02:42:47,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:47,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:42:47,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:47,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:42:47,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:42:47,109 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 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 02:42:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:47,240 INFO L93 Difference]: Finished difference Result 117 states and 157 transitions. [2023-11-29 02:42:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:42:47,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 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 40 [2023-11-29 02:42:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:47,242 INFO L225 Difference]: With dead ends: 117 [2023-11-29 02:42:47,242 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 02:42:47,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:42:47,243 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 54 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:47,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 76 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:42:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 02:42:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-11-29 02:42:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 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 02:42:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-11-29 02:42:47,250 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 40 [2023-11-29 02:42:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:47,251 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-11-29 02:42:47,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 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 02:42:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-11-29 02:42:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 02:42:47,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:47,252 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] [2023-11-29 02:42:47,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 02:42:47,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 02:42:47,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:47,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2010832250, now seen corresponding path program 1 times [2023-11-29 02:42:47,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:47,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537891607] [2023-11-29 02:42:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:47,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537891607] [2023-11-29 02:42:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537891607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:42:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231729556] [2023-11-29 02:42:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:47,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:47,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:47,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:47,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:42:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:47,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 02:42:47,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:48,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:42:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:48,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231729556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:42:48,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:42:48,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 22 [2023-11-29 02:42:48,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740361048] [2023-11-29 02:42:48,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:42:48,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 02:42:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 02:42:48,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:42:48,478 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 22 states have internal predecessors, (98), 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 02:42:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:48,789 INFO L93 Difference]: Finished difference Result 105 states and 137 transitions. [2023-11-29 02:42:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:42:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 22 states have internal predecessors, (98), 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 41 [2023-11-29 02:42:48,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:48,790 INFO L225 Difference]: With dead ends: 105 [2023-11-29 02:42:48,790 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 02:42:48,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2023-11-29 02:42:48,792 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 305 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:48,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 116 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:42:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 02:42:48,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2023-11-29 02:42:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 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 02:42:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2023-11-29 02:42:48,798 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 41 [2023-11-29 02:42:48,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:48,799 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2023-11-29 02:42:48,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 22 states have internal predecessors, (98), 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 02:42:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2023-11-29 02:42:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 02:42:48,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:48,801 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] [2023-11-29 02:42:48,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:42:49,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:42:49,005 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:49,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:49,005 INFO L85 PathProgramCache]: Analyzing trace with hash -652608170, now seen corresponding path program 1 times [2023-11-29 02:42:49,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:49,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816643177] [2023-11-29 02:42:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816643177] [2023-11-29 02:42:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816643177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:42:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202208516] [2023-11-29 02:42:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:49,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:49,305 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:49,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:42:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:49,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 02:42:49,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:49,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:42:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202208516] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:42:49,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:42:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 22 [2023-11-29 02:42:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819347703] [2023-11-29 02:42:49,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:42:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 02:42:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 02:42:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:42:49,885 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 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 02:42:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:50,185 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2023-11-29 02:42:50,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:42:50,185 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 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 41 [2023-11-29 02:42:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:50,186 INFO L225 Difference]: With dead ends: 77 [2023-11-29 02:42:50,186 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 02:42:50,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2023-11-29 02:42:50,187 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 130 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:50,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 143 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:42:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 02:42:50,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 02:42:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 02:42:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 02:42:50,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2023-11-29 02:42:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:50,189 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 02:42:50,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 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 02:42:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 02:42:50,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 02:42:50,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 02:42:50,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:42:50,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:50,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 02:42:50,498 INFO L899 garLoopResultBuilder]: For program point L126(line 126) no Hoare annotation was computed. [2023-11-29 02:42:50,498 INFO L899 garLoopResultBuilder]: For program point L126-2(line 126) no Hoare annotation was computed. [2023-11-29 02:42:50,498 INFO L899 garLoopResultBuilder]: For program point L126-4(line 126) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L119-2(line 119) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L119-4(line 119) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L111-2(line 111) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L111-4(line 111) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 02:42:50,499 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2023-11-29 02:42:50,500 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2023-11-29 02:42:50,500 INFO L899 garLoopResultBuilder]: For program point L71-4(line 71) no Hoare annotation was computed. [2023-11-29 02:42:50,500 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-29 02:42:50,500 INFO L899 garLoopResultBuilder]: For program point L72-2(line 72) no Hoare annotation was computed. [2023-11-29 02:42:50,500 INFO L899 garLoopResultBuilder]: For program point L72-4(line 72) no Hoare annotation was computed. [2023-11-29 02:42:50,500 INFO L895 garLoopResultBuilder]: At program point L81-2(lines 81 156) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~var_12~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~state_8~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~state_15~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~var_22~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~var_7~0#1| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~state_26~0#1| 0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (not (= (mod |ULTIMATE.start_main_~var_14~0#1| 256) 0)) (= |ULTIMATE.start_main_~next_74_arg_1~0#1| 0) .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~next_76_arg_1~0#1| 0)))) [2023-11-29 02:42:50,500 INFO L899 garLoopResultBuilder]: For program point L81-3(lines 81 156) no Hoare annotation was computed. [2023-11-29 02:42:50,500 INFO L899 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2023-11-29 02:42:50,500 INFO L899 garLoopResultBuilder]: For program point L73-2(line 73) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point L73-4(line 73) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point L131-2(line 131) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point L131-4(line 131) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point L132(line 132) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point L132-2(line 132) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point L132-4(line 132) no Hoare annotation was computed. [2023-11-29 02:42:50,501 INFO L899 garLoopResultBuilder]: For program point L150(line 150) no Hoare annotation was computed. [2023-11-29 02:42:50,502 INFO L899 garLoopResultBuilder]: For program point L150-2(line 150) no Hoare annotation was computed. [2023-11-29 02:42:50,502 INFO L899 garLoopResultBuilder]: For program point L150-4(line 150) no Hoare annotation was computed. [2023-11-29 02:42:50,505 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:42:50,507 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:42:50,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:42:50 BoogieIcfgContainer [2023-11-29 02:42:50,518 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:42:50,518 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:42:50,518 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:42:50,518 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:42:50,519 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:42:41" (3/4) ... [2023-11-29 02:42:50,521 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 02:42:50,531 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-29 02:42:50,532 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 02:42:50,532 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 02:42:50,533 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 02:42:50,640 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:42:50,641 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 02:42:50,641 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:42:50,642 INFO L158 Benchmark]: Toolchain (without parser) took 9815.57ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 115.0MB in the beginning and 161.7MB in the end (delta: -46.7MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2023-11-29 02:42:50,642 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:42:50,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.74ms. Allocated memory is still 159.4MB. Free memory was 114.6MB in the beginning and 101.4MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 02:42:50,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.48ms. Allocated memory is still 159.4MB. Free memory was 101.4MB in the beginning and 96.9MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 02:42:50,643 INFO L158 Benchmark]: Boogie Preprocessor took 66.17ms. Allocated memory is still 159.4MB. Free memory was 96.9MB in the beginning and 93.7MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:42:50,644 INFO L158 Benchmark]: RCFGBuilder took 497.19ms. Allocated memory is still 159.4MB. Free memory was 93.7MB in the beginning and 108.2MB in the end (delta: -14.5MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2023-11-29 02:42:50,644 INFO L158 Benchmark]: TraceAbstraction took 8797.69ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 107.5MB in the beginning and 169.0MB in the end (delta: -61.5MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2023-11-29 02:42:50,645 INFO L158 Benchmark]: Witness Printer took 123.33ms. Allocated memory is still 243.3MB. Free memory was 169.0MB in the beginning and 161.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 02:42:50,647 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.74ms. Allocated memory is still 159.4MB. Free memory was 114.6MB in the beginning and 101.4MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.48ms. Allocated memory is still 159.4MB. Free memory was 101.4MB in the beginning and 96.9MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.17ms. Allocated memory is still 159.4MB. Free memory was 96.9MB in the beginning and 93.7MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.19ms. Allocated memory is still 159.4MB. Free memory was 93.7MB in the beginning and 108.2MB in the end (delta: -14.5MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8797.69ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 107.5MB in the beginning and 169.0MB in the end (delta: -61.5MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * Witness Printer took 123.33ms. Allocated memory is still 243.3MB. Free memory was 169.0MB in the beginning and 161.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.7s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1379 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1379 mSDsluCounter, 1841 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1379 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1026 IncrementalHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 462 mSDtfsCounter, 1026 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 394 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=9, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 257 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 3 NumberOfFragments, 54 HoareAnnotationTreeSize, 1 FomulaSimplifications, 1763 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 477 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 3012 SizeOfPredicates, 63 NumberOfNonLiveVariables, 1070 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 110/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 81]: Loop Invariant Derived loop invariant: ((((((((var_12 == 1) && (state_26 == 0)) && (state_8 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) || (((((((((var_12 == 1) && !(((var_14 % 256) == 0))) && (next_74_arg_1 == 0)) && (state_8 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) && (next_76_arg_1 == 0))) RESULT: Ultimate proved your program to be correct! [2023-11-29 02:42:50,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df5e1f09-0436-4127-a280-1365b466f3bd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE