./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX --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 f9c847a826e86c06ca90730b1e3bd09118dbfcc8c7c9aa6dc001687e12e32563 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:06:51,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:06:52,065 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 17:06:52,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:06:52,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:06:52,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:06:52,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:06:52,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:06:52,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:06:52,099 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:06:52,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:06:52,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:06:52,101 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:06:52,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:06:52,101 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:06:52,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:06:52,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:06:52,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:06:52,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:06:52,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:06:52,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:06:52,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:06:52,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:06:52,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:06:52,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:06:52,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:06:52,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:06:52,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:06:52,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:06:52,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:06:52,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:06:52,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:06:52,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:06:52,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:06:52,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:06:52,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:06:52,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:06:52,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:06:52,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:06:52,116 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_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9c847a826e86c06ca90730b1e3bd09118dbfcc8c7c9aa6dc001687e12e32563 [2024-11-08 17:06:52,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:06:52,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:06:52,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:06:52,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:06:52,441 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:06:52,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c Unable to find full path for "g++" [2024-11-08 17:06:54,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:06:54,886 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:06:54,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-08 17:06:54,903 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/data/e7a4a043a/1144abb2571142888c4587f2135666db/FLAG7776c5e18 [2024-11-08 17:06:55,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/data/e7a4a043a/1144abb2571142888c4587f2135666db [2024-11-08 17:06:55,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:06:55,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:06:55,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:06:55,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:06:55,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:06:55,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:55,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557f832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55, skipping insertion in model container [2024-11-08 17:06:55,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:55,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:06:55,484 WARN L250 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_cc56bcad-b867-41a3-bfaa-7b16947a8e52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-11-08 17:06:55,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:06:55,621 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:06:55,632 WARN L250 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_cc56bcad-b867-41a3-bfaa-7b16947a8e52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-11-08 17:06:55,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:06:55,736 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:06:55,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55 WrapperNode [2024-11-08 17:06:55,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:06:55,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:06:55,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:06:55,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:06:55,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:55,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:55,904 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 518 [2024-11-08 17:06:55,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:06:55,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:06:55,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:06:55,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:06:55,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:55,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:55,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:56,013 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]. [2024-11-08 17:06:56,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:56,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:56,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:56,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:56,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:56,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:56,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:06:56,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:06:56,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:06:56,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:06:56,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (1/1) ... [2024-11-08 17:06:56,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:06:56,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:56,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:06:56,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:06:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:06:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:06:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:06:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:06:56,329 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:06:56,332 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:06:57,226 INFO L? ?]: Removed 314 outVars from TransFormulas that were not future-live. [2024-11-08 17:06:57,226 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:06:57,251 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:06:57,251 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 17:06:57,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:06:57 BoogieIcfgContainer [2024-11-08 17:06:57,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:06:57,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:06:57,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:06:57,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:06:57,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:06:55" (1/3) ... [2024-11-08 17:06:57,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c59923e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:06:57, skipping insertion in model container [2024-11-08 17:06:57,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:06:55" (2/3) ... [2024-11-08 17:06:57,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c59923e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:06:57, skipping insertion in model container [2024-11-08 17:06:57,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:06:57" (3/3) ... [2024-11-08 17:06:57,267 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-08 17:06:57,289 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:06:57,290 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:06:57,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:06:57,409 INFO L333 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, 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;@13dcf10a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:06:57,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:06:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.496124031007752) internal successors, (193), 130 states have internal predecessors, (193), 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) [2024-11-08 17:06:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 17:06:57,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:57,428 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:57,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:06:57,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1147677607, now seen corresponding path program 1 times [2024-11-08 17:06:57,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:57,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931655901] [2024-11-08 17:06:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:58,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:58,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931655901] [2024-11-08 17:06:58,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931655901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:58,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:58,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:06:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480318173] [2024-11-08 17:06:58,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:58,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:06:58,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:06:58,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:06:58,415 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.496124031007752) internal successors, (193), 130 states have internal predecessors, (193), 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 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-08 17:06:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:58,484 INFO L93 Difference]: Finished difference Result 234 states and 348 transitions. [2024-11-08 17:06:58,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:06:58,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2024-11-08 17:06:58,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:58,499 INFO L225 Difference]: With dead ends: 234 [2024-11-08 17:06:58,499 INFO L226 Difference]: Without dead ends: 129 [2024-11-08 17:06:58,503 INFO L431 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 [2024-11-08 17:06:58,507 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:58,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:06:58,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-08 17:06:58,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-08 17:06:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4765625) internal successors, (189), 128 states have internal predecessors, (189), 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) [2024-11-08 17:06:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 189 transitions. [2024-11-08 17:06:58,568 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 189 transitions. Word has length 45 [2024-11-08 17:06:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:58,573 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 189 transitions. [2024-11-08 17:06:58,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-08 17:06:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 189 transitions. [2024-11-08 17:06:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 17:06:58,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:58,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:58,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:06:58,578 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:06:58,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1219962866, now seen corresponding path program 1 times [2024-11-08 17:06:58,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:58,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570561220] [2024-11-08 17:06:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:58,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:58,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:58,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570561220] [2024-11-08 17:06:58,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570561220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:58,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:58,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:06:58,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686290335] [2024-11-08 17:06:58,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:58,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:06:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:06:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:06:58,873 INFO L87 Difference]: Start difference. First operand 129 states and 189 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-08 17:06:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:58,926 INFO L93 Difference]: Finished difference Result 234 states and 343 transitions. [2024-11-08 17:06:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:06:58,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2024-11-08 17:06:58,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:58,928 INFO L225 Difference]: With dead ends: 234 [2024-11-08 17:06:58,928 INFO L226 Difference]: Without dead ends: 131 [2024-11-08 17:06:58,929 INFO L431 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 [2024-11-08 17:06:58,931 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 545 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 [2024-11-08 17:06:58,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 545 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:06:58,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-08 17:06:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-08 17:06:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4692307692307693) internal successors, (191), 130 states have internal predecessors, (191), 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) [2024-11-08 17:06:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 191 transitions. [2024-11-08 17:06:58,944 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 191 transitions. Word has length 46 [2024-11-08 17:06:58,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:58,944 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 191 transitions. [2024-11-08 17:06:58,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-08 17:06:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 191 transitions. [2024-11-08 17:06:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 17:06:58,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:58,946 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:58,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:06:58,951 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:06:58,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1933822496, now seen corresponding path program 1 times [2024-11-08 17:06:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:58,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174716246] [2024-11-08 17:06:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174716246] [2024-11-08 17:06:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174716246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:59,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:06:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843191003] [2024-11-08 17:06:59,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:59,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:06:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:06:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:06:59,428 INFO L87 Difference]: Start difference. First operand 131 states and 191 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:59,544 INFO L93 Difference]: Finished difference Result 241 states and 352 transitions. [2024-11-08 17:06:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:06:59,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 17:06:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:59,547 INFO L225 Difference]: With dead ends: 241 [2024-11-08 17:06:59,547 INFO L226 Difference]: Without dead ends: 136 [2024-11-08 17:06:59,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:06:59,554 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 1 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:59,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 889 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:06:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-08 17:06:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-08 17:06:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4592592592592593) internal successors, (197), 135 states have internal predecessors, (197), 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) [2024-11-08 17:06:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 197 transitions. [2024-11-08 17:06:59,584 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 197 transitions. Word has length 47 [2024-11-08 17:06:59,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:59,585 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 197 transitions. [2024-11-08 17:06:59,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:06:59,585 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 197 transitions. [2024-11-08 17:06:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 17:06:59,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:59,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:59,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:06:59,587 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:06:59,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1089931833, now seen corresponding path program 1 times [2024-11-08 17:06:59,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:59,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003984971] [2024-11-08 17:06:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:59,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:59,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:59,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003984971] [2024-11-08 17:06:59,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003984971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:59,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:59,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:06:59,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516463978] [2024-11-08 17:06:59,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:59,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:06:59,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:06:59,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:06:59,959 INFO L87 Difference]: Start difference. First operand 136 states and 197 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-11-08 17:07:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:00,046 INFO L93 Difference]: Finished difference Result 257 states and 373 transitions. [2024-11-08 17:07:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:07:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 48 [2024-11-08 17:07:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:00,049 INFO L225 Difference]: With dead ends: 257 [2024-11-08 17:07:00,049 INFO L226 Difference]: Without dead ends: 147 [2024-11-08 17:07:00,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:00,051 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:00,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:00,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-08 17:07:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-08 17:07:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4452054794520548) internal successors, (211), 146 states have internal predecessors, (211), 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) [2024-11-08 17:07:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 211 transitions. [2024-11-08 17:07:00,059 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 211 transitions. Word has length 48 [2024-11-08 17:07:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:00,060 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 211 transitions. [2024-11-08 17:07:00,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-11-08 17:07:00,060 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 211 transitions. [2024-11-08 17:07:00,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 17:07:00,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:00,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:00,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:07:00,063 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:00,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:00,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1235101952, now seen corresponding path program 1 times [2024-11-08 17:07:00,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:00,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951406464] [2024-11-08 17:07:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:00,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:00,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951406464] [2024-11-08 17:07:00,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951406464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:00,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:07:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488926707] [2024-11-08 17:07:00,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:00,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:07:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:07:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:07:00,258 INFO L87 Difference]: Start difference. First operand 147 states and 211 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-08 17:07:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:00,355 INFO L93 Difference]: Finished difference Result 363 states and 519 transitions. [2024-11-08 17:07:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:07:00,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2024-11-08 17:07:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:00,358 INFO L225 Difference]: With dead ends: 363 [2024-11-08 17:07:00,358 INFO L226 Difference]: Without dead ends: 242 [2024-11-08 17:07:00,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:00,360 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 391 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:00,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-08 17:07:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 194. [2024-11-08 17:07:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4455958549222798) internal successors, (279), 193 states have internal predecessors, (279), 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) [2024-11-08 17:07:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2024-11-08 17:07:00,371 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 48 [2024-11-08 17:07:00,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:00,372 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2024-11-08 17:07:00,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-08 17:07:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2024-11-08 17:07:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 17:07:00,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:00,374 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:00,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:07:00,375 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:00,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 273289970, now seen corresponding path program 1 times [2024-11-08 17:07:00,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:00,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035686230] [2024-11-08 17:07:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:00,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035686230] [2024-11-08 17:07:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035686230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:00,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:00,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:07:00,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887141683] [2024-11-08 17:07:00,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:00,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:07:00,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:00,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:07:00,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:00,654 INFO L87 Difference]: Start difference. First operand 194 states and 279 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-11-08 17:07:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:00,730 INFO L93 Difference]: Finished difference Result 353 states and 507 transitions. [2024-11-08 17:07:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:07:00,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2024-11-08 17:07:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:00,732 INFO L225 Difference]: With dead ends: 353 [2024-11-08 17:07:00,732 INFO L226 Difference]: Without dead ends: 216 [2024-11-08 17:07:00,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:00,734 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:00,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-08 17:07:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-08 17:07:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.427906976744186) internal successors, (307), 215 states have internal predecessors, (307), 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) [2024-11-08 17:07:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 307 transitions. [2024-11-08 17:07:00,744 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 307 transitions. Word has length 49 [2024-11-08 17:07:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:00,744 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 307 transitions. [2024-11-08 17:07:00,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-11-08 17:07:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 307 transitions. [2024-11-08 17:07:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 17:07:00,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:00,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:00,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:07:00,747 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:00,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:00,747 INFO L85 PathProgramCache]: Analyzing trace with hash -587589493, now seen corresponding path program 1 times [2024-11-08 17:07:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523216693] [2024-11-08 17:07:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:00,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523216693] [2024-11-08 17:07:00,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523216693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:00,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:00,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:07:00,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467926175] [2024-11-08 17:07:00,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:00,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:07:00,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:00,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:07:00,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:07:00,940 INFO L87 Difference]: Start difference. First operand 216 states and 307 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-08 17:07:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:01,033 INFO L93 Difference]: Finished difference Result 390 states and 549 transitions. [2024-11-08 17:07:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:07:01,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2024-11-08 17:07:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:01,036 INFO L225 Difference]: With dead ends: 390 [2024-11-08 17:07:01,036 INFO L226 Difference]: Without dead ends: 246 [2024-11-08 17:07:01,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:01,038 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 359 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:01,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-08 17:07:01,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 206. [2024-11-08 17:07:01,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.4195121951219511) internal successors, (291), 205 states have internal predecessors, (291), 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) [2024-11-08 17:07:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 291 transitions. [2024-11-08 17:07:01,047 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 291 transitions. Word has length 49 [2024-11-08 17:07:01,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:01,048 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 291 transitions. [2024-11-08 17:07:01,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-08 17:07:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 291 transitions. [2024-11-08 17:07:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 17:07:01,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:01,050 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:01,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:07:01,051 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:01,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1400621401, now seen corresponding path program 1 times [2024-11-08 17:07:01,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:01,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715202362] [2024-11-08 17:07:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:01,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:01,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715202362] [2024-11-08 17:07:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715202362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:01,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:01,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:07:01,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006557878] [2024-11-08 17:07:01,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:01,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:07:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:01,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:07:01,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:01,422 INFO L87 Difference]: Start difference. First operand 206 states and 291 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2024-11-08 17:07:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:01,506 INFO L93 Difference]: Finished difference Result 385 states and 543 transitions. [2024-11-08 17:07:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:07:01,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2024-11-08 17:07:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:01,508 INFO L225 Difference]: With dead ends: 385 [2024-11-08 17:07:01,509 INFO L226 Difference]: Without dead ends: 228 [2024-11-08 17:07:01,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:01,513 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:01,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-08 17:07:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-08 17:07:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.4052863436123348) internal successors, (319), 227 states have internal predecessors, (319), 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) [2024-11-08 17:07:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 319 transitions. [2024-11-08 17:07:01,531 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 319 transitions. Word has length 50 [2024-11-08 17:07:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:01,531 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 319 transitions. [2024-11-08 17:07:01,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2024-11-08 17:07:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 319 transitions. [2024-11-08 17:07:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 17:07:01,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:01,537 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:01,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:07:01,538 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:01,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash -618346322, now seen corresponding path program 1 times [2024-11-08 17:07:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:01,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323346759] [2024-11-08 17:07:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:01,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:01,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:01,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323346759] [2024-11-08 17:07:01,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323346759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:01,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:01,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:07:01,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791628400] [2024-11-08 17:07:01,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:01,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:07:01,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:07:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:07:01,732 INFO L87 Difference]: Start difference. First operand 228 states and 319 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-08 17:07:01,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:01,841 INFO L93 Difference]: Finished difference Result 428 states and 595 transitions. [2024-11-08 17:07:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:07:01,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 50 [2024-11-08 17:07:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:01,847 INFO L225 Difference]: With dead ends: 428 [2024-11-08 17:07:01,847 INFO L226 Difference]: Without dead ends: 266 [2024-11-08 17:07:01,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:01,849 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 375 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:01,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-08 17:07:01,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 218. [2024-11-08 17:07:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.3963133640552996) internal successors, (303), 217 states have internal predecessors, (303), 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) [2024-11-08 17:07:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 303 transitions. [2024-11-08 17:07:01,867 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 303 transitions. Word has length 50 [2024-11-08 17:07:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:01,868 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 303 transitions. [2024-11-08 17:07:01,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-08 17:07:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 303 transitions. [2024-11-08 17:07:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 17:07:01,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:01,870 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:01,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:07:01,871 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:01,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1906192221, now seen corresponding path program 1 times [2024-11-08 17:07:01,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:01,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70380848] [2024-11-08 17:07:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:02,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:02,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70380848] [2024-11-08 17:07:02,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70380848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:02,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:02,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:07:02,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713071287] [2024-11-08 17:07:02,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:02,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:07:02,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:02,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:07:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:07:02,078 INFO L87 Difference]: Start difference. First operand 218 states and 303 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-08 17:07:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:02,174 INFO L93 Difference]: Finished difference Result 411 states and 565 transitions. [2024-11-08 17:07:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:07:02,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 51 [2024-11-08 17:07:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:02,177 INFO L225 Difference]: With dead ends: 411 [2024-11-08 17:07:02,177 INFO L226 Difference]: Without dead ends: 244 [2024-11-08 17:07:02,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:02,178 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 319 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:02,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-08 17:07:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 212. [2024-11-08 17:07:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.3886255924170616) internal successors, (293), 211 states have internal predecessors, (293), 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) [2024-11-08 17:07:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 293 transitions. [2024-11-08 17:07:02,191 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 293 transitions. Word has length 51 [2024-11-08 17:07:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:02,191 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 293 transitions. [2024-11-08 17:07:02,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-08 17:07:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 293 transitions. [2024-11-08 17:07:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 17:07:02,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:02,193 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:02,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:07:02,193 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:02,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1287755012, now seen corresponding path program 1 times [2024-11-08 17:07:02,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66035915] [2024-11-08 17:07:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:02,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:02,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66035915] [2024-11-08 17:07:02,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66035915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:02,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:02,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:07:02,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218907791] [2024-11-08 17:07:02,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:02,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:07:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:07:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:02,444 INFO L87 Difference]: Start difference. First operand 212 states and 293 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-11-08 17:07:02,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:02,528 INFO L93 Difference]: Finished difference Result 401 states and 552 transitions. [2024-11-08 17:07:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:07:02,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2024-11-08 17:07:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:02,530 INFO L225 Difference]: With dead ends: 401 [2024-11-08 17:07:02,531 INFO L226 Difference]: Without dead ends: 230 [2024-11-08 17:07:02,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:02,533 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:02,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1063 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-08 17:07:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2024-11-08 17:07:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.3755458515283843) internal successors, (315), 229 states have internal predecessors, (315), 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) [2024-11-08 17:07:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 315 transitions. [2024-11-08 17:07:02,543 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 315 transitions. Word has length 51 [2024-11-08 17:07:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:02,544 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 315 transitions. [2024-11-08 17:07:02,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-11-08 17:07:02,545 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 315 transitions. [2024-11-08 17:07:02,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 17:07:02,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:02,546 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:02,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:07:02,546 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:02,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:02,547 INFO L85 PathProgramCache]: Analyzing trace with hash -827044331, now seen corresponding path program 1 times [2024-11-08 17:07:02,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:02,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163794412] [2024-11-08 17:07:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:02,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:02,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:02,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163794412] [2024-11-08 17:07:02,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163794412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:02,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:02,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:07:02,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548863908] [2024-11-08 17:07:02,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:02,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:07:02,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:02,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:07:02,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:07:02,712 INFO L87 Difference]: Start difference. First operand 230 states and 315 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-08 17:07:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:02,762 INFO L93 Difference]: Finished difference Result 430 states and 588 transitions. [2024-11-08 17:07:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:07:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2024-11-08 17:07:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:02,764 INFO L225 Difference]: With dead ends: 430 [2024-11-08 17:07:02,765 INFO L226 Difference]: Without dead ends: 246 [2024-11-08 17:07:02,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:07:02,767 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 4 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:02,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 725 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:07:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-08 17:07:02,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-08 17:07:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.3673469387755102) internal successors, (335), 245 states have internal predecessors, (335), 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) [2024-11-08 17:07:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2024-11-08 17:07:02,776 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 52 [2024-11-08 17:07:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:02,777 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2024-11-08 17:07:02,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-08 17:07:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2024-11-08 17:07:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 17:07:02,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:02,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:02,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:07:02,779 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:02,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1249426596, now seen corresponding path program 1 times [2024-11-08 17:07:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:02,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322173304] [2024-11-08 17:07:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:02,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:02,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322173304] [2024-11-08 17:07:02,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322173304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:02,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:02,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:07:02,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416412042] [2024-11-08 17:07:02,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:02,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:07:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:07:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:07:02,958 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-08 17:07:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:03,042 INFO L93 Difference]: Finished difference Result 467 states and 631 transitions. [2024-11-08 17:07:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:07:03,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2024-11-08 17:07:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:03,045 INFO L225 Difference]: With dead ends: 467 [2024-11-08 17:07:03,045 INFO L226 Difference]: Without dead ends: 268 [2024-11-08 17:07:03,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:03,046 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 311 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:03,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-08 17:07:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 236. [2024-11-08 17:07:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.3574468085106384) internal successors, (319), 235 states have internal predecessors, (319), 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) [2024-11-08 17:07:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 319 transitions. [2024-11-08 17:07:03,056 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 319 transitions. Word has length 52 [2024-11-08 17:07:03,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:03,056 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 319 transitions. [2024-11-08 17:07:03,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-08 17:07:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 319 transitions. [2024-11-08 17:07:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 17:07:03,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:03,057 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:03,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:07:03,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:03,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1106142186, now seen corresponding path program 1 times [2024-11-08 17:07:03,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:03,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481477596] [2024-11-08 17:07:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:03,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:03,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:03,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481477596] [2024-11-08 17:07:03,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481477596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:03,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:03,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:07:03,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143122234] [2024-11-08 17:07:03,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:03,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:07:03,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:03,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:07:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:07:03,239 INFO L87 Difference]: Start difference. First operand 236 states and 319 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-11-08 17:07:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:03,343 INFO L93 Difference]: Finished difference Result 437 states and 591 transitions. [2024-11-08 17:07:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:07:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) Word has length 53 [2024-11-08 17:07:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:03,345 INFO L225 Difference]: With dead ends: 437 [2024-11-08 17:07:03,346 INFO L226 Difference]: Without dead ends: 237 [2024-11-08 17:07:03,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:07:03,347 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 289 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:03,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 528 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:07:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-08 17:07:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 212. [2024-11-08 17:07:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.3696682464454977) internal successors, (289), 211 states have internal predecessors, (289), 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) [2024-11-08 17:07:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 289 transitions. [2024-11-08 17:07:03,355 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 289 transitions. Word has length 53 [2024-11-08 17:07:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:03,355 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 289 transitions. [2024-11-08 17:07:03,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-11-08 17:07:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 289 transitions. [2024-11-08 17:07:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 17:07:03,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:03,357 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:03,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:07:03,358 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:03,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:03,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1146506604, now seen corresponding path program 1 times [2024-11-08 17:07:03,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:03,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244240402] [2024-11-08 17:07:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:03,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:06,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:06,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244240402] [2024-11-08 17:07:06,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244240402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881481242] [2024-11-08 17:07:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:06,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:06,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:06,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:06,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:07:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:07,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-08 17:07:07,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:10,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:13,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881481242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:13,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:13,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 19] total 42 [2024-11-08 17:07:13,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401963092] [2024-11-08 17:07:13,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:13,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 17:07:13,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 17:07:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 17:07:13,506 INFO L87 Difference]: Start difference. First operand 212 states and 289 transitions. Second operand has 42 states, 42 states have (on average 6.714285714285714) internal successors, (282), 42 states have internal predecessors, (282), 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) [2024-11-08 17:07:18,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:18,603 INFO L93 Difference]: Finished difference Result 632 states and 865 transitions. [2024-11-08 17:07:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-08 17:07:18,604 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.714285714285714) internal successors, (282), 42 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-08 17:07:18,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:18,607 INFO L225 Difference]: With dead ends: 632 [2024-11-08 17:07:18,607 INFO L226 Difference]: Without dead ends: 470 [2024-11-08 17:07:18,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2740 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1131, Invalid=8375, Unknown=0, NotChecked=0, Total=9506 [2024-11-08 17:07:18,613 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 1338 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:18,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 2382 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 17:07:18,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-11-08 17:07:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 340. [2024-11-08 17:07:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.3657817109144543) internal successors, (463), 339 states have internal predecessors, (463), 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) [2024-11-08 17:07:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 463 transitions. [2024-11-08 17:07:18,628 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 463 transitions. Word has length 99 [2024-11-08 17:07:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:18,628 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 463 transitions. [2024-11-08 17:07:18,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.714285714285714) internal successors, (282), 42 states have internal predecessors, (282), 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) [2024-11-08 17:07:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 463 transitions. [2024-11-08 17:07:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 17:07:18,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:18,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:18,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:07:18,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:07:18,833 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:18,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash 960922015, now seen corresponding path program 1 times [2024-11-08 17:07:18,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:18,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765569561] [2024-11-08 17:07:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:18,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:21,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:21,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765569561] [2024-11-08 17:07:21,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765569561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:21,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277187738] [2024-11-08 17:07:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:21,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:21,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:21,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:07:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:21,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 167 conjuncts are in the unsatisfiable core [2024-11-08 17:07:21,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:24,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277187738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:28,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 24] total 54 [2024-11-08 17:07:28,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19814666] [2024-11-08 17:07:28,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:28,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 17:07:28,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:28,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 17:07:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2565, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 17:07:28,760 INFO L87 Difference]: Start difference. First operand 340 states and 463 transitions. Second operand has 54 states, 54 states have (on average 5.185185185185185) internal successors, (280), 54 states have internal predecessors, (280), 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) [2024-11-08 17:07:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:33,947 INFO L93 Difference]: Finished difference Result 882 states and 1194 transitions. [2024-11-08 17:07:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-08 17:07:33,949 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.185185185185185) internal successors, (280), 54 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-08 17:07:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:33,954 INFO L225 Difference]: With dead ends: 882 [2024-11-08 17:07:33,954 INFO L226 Difference]: Without dead ends: 615 [2024-11-08 17:07:33,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 157 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4087 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1182, Invalid=11928, Unknown=0, NotChecked=0, Total=13110 [2024-11-08 17:07:33,961 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1006 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:33,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 2959 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:07:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-08 17:07:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 449. [2024-11-08 17:07:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.34375) internal successors, (602), 448 states have internal predecessors, (602), 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) [2024-11-08 17:07:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 602 transitions. [2024-11-08 17:07:33,974 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 602 transitions. Word has length 100 [2024-11-08 17:07:33,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:33,975 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 602 transitions. [2024-11-08 17:07:33,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.185185185185185) internal successors, (280), 54 states have internal predecessors, (280), 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) [2024-11-08 17:07:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 602 transitions. [2024-11-08 17:07:33,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 17:07:33,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:33,977 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:34,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:07:34,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:07:34,178 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:34,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash 140870170, now seen corresponding path program 1 times [2024-11-08 17:07:34,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:34,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949384402] [2024-11-08 17:07:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:34,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:37,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949384402] [2024-11-08 17:07:37,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949384402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494301918] [2024-11-08 17:07:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:37,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:37,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:37,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:37,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:07:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:37,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-08 17:07:37,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:39,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:41,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494301918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:41,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:41,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 24] total 55 [2024-11-08 17:07:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175820320] [2024-11-08 17:07:41,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:41,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 17:07:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:41,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 17:07:41,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=2643, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 17:07:41,833 INFO L87 Difference]: Start difference. First operand 449 states and 602 transitions. Second operand has 55 states, 55 states have (on average 5.1454545454545455) internal successors, (283), 55 states have internal predecessors, (283), 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) [2024-11-08 17:07:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:50,615 INFO L93 Difference]: Finished difference Result 1655 states and 2277 transitions. [2024-11-08 17:07:50,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-08 17:07:50,616 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.1454545454545455) internal successors, (283), 55 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 17:07:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:50,621 INFO L225 Difference]: With dead ends: 1655 [2024-11-08 17:07:50,621 INFO L226 Difference]: Without dead ends: 1376 [2024-11-08 17:07:50,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7893 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2410, Invalid=22712, Unknown=0, NotChecked=0, Total=25122 [2024-11-08 17:07:50,628 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 2557 mSDsluCounter, 4089 mSDsCounter, 0 mSdLazyCounter, 4153 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:50,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2557 Valid, 4243 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4153 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 17:07:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-08 17:07:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 664. [2024-11-08 17:07:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.354449472096531) internal successors, (898), 663 states have internal predecessors, (898), 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) [2024-11-08 17:07:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 898 transitions. [2024-11-08 17:07:50,648 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 898 transitions. Word has length 101 [2024-11-08 17:07:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:50,649 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 898 transitions. [2024-11-08 17:07:50,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.1454545454545455) internal successors, (283), 55 states have internal predecessors, (283), 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) [2024-11-08 17:07:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 898 transitions. [2024-11-08 17:07:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 17:07:50,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:50,651 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:50,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:07:50,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:07:50,851 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:50,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1297461945, now seen corresponding path program 1 times [2024-11-08 17:07:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066933264] [2024-11-08 17:07:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:52,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066933264] [2024-11-08 17:07:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066933264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106830822] [2024-11-08 17:07:52,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:52,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:07:52,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:07:52,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:07:52,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:07:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:52,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-08 17:07:52,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:07:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:53,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:07:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:55,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106830822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:07:55,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:07:55,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 14] total 31 [2024-11-08 17:07:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545330212] [2024-11-08 17:07:55,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:55,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 17:07:55,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 17:07:55,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:07:55,024 INFO L87 Difference]: Start difference. First operand 664 states and 898 transitions. Second operand has 31 states, 31 states have (on average 9.096774193548388) internal successors, (282), 31 states have internal predecessors, (282), 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) [2024-11-08 17:07:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:58,282 INFO L93 Difference]: Finished difference Result 2890 states and 3936 transitions. [2024-11-08 17:07:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 17:07:58,283 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.096774193548388) internal successors, (282), 31 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 17:07:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:58,294 INFO L225 Difference]: With dead ends: 2890 [2024-11-08 17:07:58,294 INFO L226 Difference]: Without dead ends: 2302 [2024-11-08 17:07:58,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=721, Invalid=4109, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 17:07:58,298 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 1104 mSDsluCounter, 5214 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:58,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 5530 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 17:07:58,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2024-11-08 17:07:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1378. [2024-11-08 17:07:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 1.3485838779956427) internal successors, (1857), 1377 states have internal predecessors, (1857), 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) [2024-11-08 17:07:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1857 transitions. [2024-11-08 17:07:58,342 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1857 transitions. Word has length 101 [2024-11-08 17:07:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:58,343 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1857 transitions. [2024-11-08 17:07:58,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.096774193548388) internal successors, (282), 31 states have internal predecessors, (282), 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) [2024-11-08 17:07:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1857 transitions. [2024-11-08 17:07:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:07:58,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:58,345 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:58,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:07:58,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 17:07:58,546 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:07:58,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash -327900303, now seen corresponding path program 1 times [2024-11-08 17:07:58,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:58,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051330416] [2024-11-08 17:07:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:58,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:00,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051330416] [2024-11-08 17:08:00,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051330416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:00,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382958105] [2024-11-08 17:08:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:00,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:00,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:00,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:00,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:08:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:00,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 17:08:00,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:01,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:02,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382958105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:02,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:02,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 25 [2024-11-08 17:08:02,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673550467] [2024-11-08 17:08:02,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:02,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:08:02,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:08:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:08:02,551 INFO L87 Difference]: Start difference. First operand 1378 states and 1857 transitions. Second operand has 25 states, 25 states have (on average 7.36) internal successors, (184), 25 states have internal predecessors, (184), 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) [2024-11-08 17:08:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:03,310 INFO L93 Difference]: Finished difference Result 2792 states and 3755 transitions. [2024-11-08 17:08:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 17:08:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.36) internal successors, (184), 25 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-08 17:08:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:03,316 INFO L225 Difference]: With dead ends: 2792 [2024-11-08 17:08:03,316 INFO L226 Difference]: Without dead ends: 1530 [2024-11-08 17:08:03,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 184 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 17:08:03,319 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 620 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:03,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1694 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:08:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2024-11-08 17:08:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1466. [2024-11-08 17:08:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 1.3419795221843003) internal successors, (1966), 1465 states have internal predecessors, (1966), 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) [2024-11-08 17:08:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1966 transitions. [2024-11-08 17:08:03,356 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1966 transitions. Word has length 102 [2024-11-08 17:08:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:03,357 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 1966 transitions. [2024-11-08 17:08:03,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.36) internal successors, (184), 25 states have internal predecessors, (184), 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) [2024-11-08 17:08:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1966 transitions. [2024-11-08 17:08:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:08:03,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:03,360 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:03,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:08:03,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:03,561 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:08:03,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash -487461534, now seen corresponding path program 1 times [2024-11-08 17:08:03,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:03,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730448472] [2024-11-08 17:08:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:03,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730448472] [2024-11-08 17:08:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730448472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246385844] [2024-11-08 17:08:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:05,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:05,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:05,624 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:05,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:08:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:06,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 172 conjuncts are in the unsatisfiable core [2024-11-08 17:08:06,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:08,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:11,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246385844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:11,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 27] total 53 [2024-11-08 17:08:11,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688188365] [2024-11-08 17:08:11,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:11,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 17:08:11,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:11,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 17:08:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=2463, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 17:08:11,582 INFO L87 Difference]: Start difference. First operand 1466 states and 1966 transitions. Second operand has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 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) [2024-11-08 17:08:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:17,302 INFO L93 Difference]: Finished difference Result 4261 states and 5730 transitions. [2024-11-08 17:08:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-08 17:08:17,303 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-08 17:08:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:17,312 INFO L225 Difference]: With dead ends: 4261 [2024-11-08 17:08:17,312 INFO L226 Difference]: Without dead ends: 2967 [2024-11-08 17:08:17,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2866 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1039, Invalid=9061, Unknown=0, NotChecked=0, Total=10100 [2024-11-08 17:08:17,316 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 908 mSDsluCounter, 3583 mSDsCounter, 0 mSdLazyCounter, 3364 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:17,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 3700 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3364 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 17:08:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2024-11-08 17:08:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2049. [2024-11-08 17:08:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 1.3515625) internal successors, (2768), 2048 states have internal predecessors, (2768), 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) [2024-11-08 17:08:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2768 transitions. [2024-11-08 17:08:17,397 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2768 transitions. Word has length 102 [2024-11-08 17:08:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:17,398 INFO L471 AbstractCegarLoop]: Abstraction has 2049 states and 2768 transitions. [2024-11-08 17:08:17,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 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) [2024-11-08 17:08:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2768 transitions. [2024-11-08 17:08:17,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:08:17,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:17,400 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:17,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:08:17,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:17,602 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:08:17,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash 964425227, now seen corresponding path program 1 times [2024-11-08 17:08:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:17,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080663939] [2024-11-08 17:08:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:17,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:18,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080663939] [2024-11-08 17:08:18,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080663939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:18,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697864337] [2024-11-08 17:08:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:18,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:18,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:18,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:18,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:08:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:19,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-08 17:08:19,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:20,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:22,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697864337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:22,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:22,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 16] total 35 [2024-11-08 17:08:22,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365849887] [2024-11-08 17:08:22,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:22,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 17:08:22,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 17:08:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:08:22,070 INFO L87 Difference]: Start difference. First operand 2049 states and 2768 transitions. Second operand has 35 states, 35 states have (on average 8.0) internal successors, (280), 35 states have internal predecessors, (280), 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) [2024-11-08 17:08:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:26,716 INFO L93 Difference]: Finished difference Result 4665 states and 6283 transitions. [2024-11-08 17:08:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 17:08:26,717 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.0) internal successors, (280), 35 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 17:08:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:26,724 INFO L225 Difference]: With dead ends: 4665 [2024-11-08 17:08:26,724 INFO L226 Difference]: Without dead ends: 2777 [2024-11-08 17:08:26,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=951, Invalid=6531, Unknown=0, NotChecked=0, Total=7482 [2024-11-08 17:08:26,728 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 1496 mSDsluCounter, 7521 mSDsCounter, 0 mSdLazyCounter, 3186 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 7864 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:26,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 7864 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3186 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 17:08:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2024-11-08 17:08:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 1985. [2024-11-08 17:08:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1984 states have (on average 1.344758064516129) internal successors, (2668), 1984 states have internal predecessors, (2668), 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) [2024-11-08 17:08:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2668 transitions. [2024-11-08 17:08:26,795 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2668 transitions. Word has length 103 [2024-11-08 17:08:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:26,796 INFO L471 AbstractCegarLoop]: Abstraction has 1985 states and 2668 transitions. [2024-11-08 17:08:26,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.0) internal successors, (280), 35 states have internal predecessors, (280), 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) [2024-11-08 17:08:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2668 transitions. [2024-11-08 17:08:26,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 17:08:26,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:26,798 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:26,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:08:26,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:26,999 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:08:27,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash -655086988, now seen corresponding path program 1 times [2024-11-08 17:08:27,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:27,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691778997] [2024-11-08 17:08:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:27,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:28,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:28,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691778997] [2024-11-08 17:08:28,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691778997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:28,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220725893] [2024-11-08 17:08:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:28,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:28,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:28,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:08:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:29,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-08 17:08:29,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:31,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:34,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220725893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:08:34,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:08:34,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 17] total 34 [2024-11-08 17:08:34,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110552577] [2024-11-08 17:08:34,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:08:34,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 17:08:34,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:08:34,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 17:08:34,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 17:08:34,426 INFO L87 Difference]: Start difference. First operand 1985 states and 2668 transitions. Second operand has 34 states, 34 states have (on average 8.264705882352942) internal successors, (281), 34 states have internal predecessors, (281), 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) [2024-11-08 17:08:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:39,581 INFO L93 Difference]: Finished difference Result 4951 states and 6629 transitions. [2024-11-08 17:08:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 17:08:39,582 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.264705882352942) internal successors, (281), 34 states have internal predecessors, (281), 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 104 [2024-11-08 17:08:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:39,590 INFO L225 Difference]: With dead ends: 4951 [2024-11-08 17:08:39,591 INFO L226 Difference]: Without dead ends: 3058 [2024-11-08 17:08:39,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=887, Invalid=6085, Unknown=0, NotChecked=0, Total=6972 [2024-11-08 17:08:39,594 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 1115 mSDsluCounter, 3231 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:39,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 3393 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 17:08:39,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2024-11-08 17:08:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2562. [2024-11-08 17:08:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2561 states have (on average 1.3233112065599375) internal successors, (3389), 2561 states have internal predecessors, (3389), 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) [2024-11-08 17:08:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3389 transitions. [2024-11-08 17:08:39,661 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3389 transitions. Word has length 104 [2024-11-08 17:08:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:39,662 INFO L471 AbstractCegarLoop]: Abstraction has 2562 states and 3389 transitions. [2024-11-08 17:08:39,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.264705882352942) internal successors, (281), 34 states have internal predecessors, (281), 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) [2024-11-08 17:08:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3389 transitions. [2024-11-08 17:08:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-08 17:08:39,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:39,667 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:39,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:08:39,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:39,868 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:08:39,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash -877344384, now seen corresponding path program 2 times [2024-11-08 17:08:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931230416] [2024-11-08 17:08:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 17 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 17:08:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931230416] [2024-11-08 17:08:45,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931230416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:45,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317516496] [2024-11-08 17:08:45,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:08:45,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:45,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:45,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:45,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:08:46,472 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:08:46,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:08:46,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 214 conjuncts are in the unsatisfiable core [2024-11-08 17:08:46,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:51,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317516496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:02,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 28, 31] total 71 [2024-11-08 17:09:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898355563] [2024-11-08 17:09:02,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:02,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 17:09:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:02,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 17:09:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=4602, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 17:09:02,245 INFO L87 Difference]: Start difference. First operand 2562 states and 3389 transitions. Second operand has 71 states, 71 states have (on average 5.704225352112676) internal successors, (405), 71 states have internal predecessors, (405), 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) [2024-11-08 17:09:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:13,927 INFO L93 Difference]: Finished difference Result 10259 states and 13470 transitions. [2024-11-08 17:09:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-08 17:09:13,928 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.704225352112676) internal successors, (405), 71 states have internal predecessors, (405), 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 150 [2024-11-08 17:09:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:13,943 INFO L225 Difference]: With dead ends: 10259 [2024-11-08 17:09:13,944 INFO L226 Difference]: Without dead ends: 7769 [2024-11-08 17:09:13,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7565 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=2871, Invalid=23861, Unknown=0, NotChecked=0, Total=26732 [2024-11-08 17:09:13,952 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 3118 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3118 SdHoareTripleChecker+Valid, 4491 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:13,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3118 Valid, 4491 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-08 17:09:13,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7769 states. [2024-11-08 17:09:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7769 to 3683. [2024-11-08 17:09:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3683 states, 3682 states have (on average 1.3183052688756112) internal successors, (4854), 3682 states have internal predecessors, (4854), 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) [2024-11-08 17:09:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3683 states to 3683 states and 4854 transitions. [2024-11-08 17:09:14,066 INFO L78 Accepts]: Start accepts. Automaton has 3683 states and 4854 transitions. Word has length 150 [2024-11-08 17:09:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:14,067 INFO L471 AbstractCegarLoop]: Abstraction has 3683 states and 4854 transitions. [2024-11-08 17:09:14,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 5.704225352112676) internal successors, (405), 71 states have internal predecessors, (405), 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) [2024-11-08 17:09:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3683 states and 4854 transitions. [2024-11-08 17:09:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 17:09:14,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:14,073 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:14,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:09:14,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:14,274 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:14,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1648916469, now seen corresponding path program 2 times [2024-11-08 17:09:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102175373] [2024-11-08 17:09:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:14,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102175373] [2024-11-08 17:09:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102175373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824911662] [2024-11-08 17:09:21,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:09:21,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:21,863 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:21,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:09:22,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:09:22,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:09:22,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-08 17:09:22,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 38 proven. 56 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:09:24,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:29,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824911662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:29,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:29,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 23] total 57 [2024-11-08 17:09:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259255373] [2024-11-08 17:09:29,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:29,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-08 17:09:29,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-08 17:09:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2993, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 17:09:29,519 INFO L87 Difference]: Start difference. First operand 3683 states and 4854 transitions. Second operand has 57 states, 57 states have (on average 7.280701754385965) internal successors, (415), 57 states have internal predecessors, (415), 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) [2024-11-08 17:09:36,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:36,812 INFO L93 Difference]: Finished difference Result 13087 states and 17043 transitions. [2024-11-08 17:09:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-08 17:09:36,813 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 7.280701754385965) internal successors, (415), 57 states have internal predecessors, (415), 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 151 [2024-11-08 17:09:36,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:36,834 INFO L225 Difference]: With dead ends: 13087 [2024-11-08 17:09:36,835 INFO L226 Difference]: Without dead ends: 8812 [2024-11-08 17:09:36,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4966 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1717, Invalid=16105, Unknown=0, NotChecked=0, Total=17822 [2024-11-08 17:09:36,844 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 4435 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4435 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:36,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4435 Valid, 3926 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 17:09:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8812 states. [2024-11-08 17:09:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8812 to 4255. [2024-11-08 17:09:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4255 states, 4254 states have (on average 1.315467795016455) internal successors, (5596), 4254 states have internal predecessors, (5596), 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) [2024-11-08 17:09:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5596 transitions. [2024-11-08 17:09:36,979 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5596 transitions. Word has length 151 [2024-11-08 17:09:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:36,979 INFO L471 AbstractCegarLoop]: Abstraction has 4255 states and 5596 transitions. [2024-11-08 17:09:36,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.280701754385965) internal successors, (415), 57 states have internal predecessors, (415), 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) [2024-11-08 17:09:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5596 transitions. [2024-11-08 17:09:36,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 17:09:36,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:36,987 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:37,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:09:37,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:37,188 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:37,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2004767790, now seen corresponding path program 1 times [2024-11-08 17:09:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997312480] [2024-11-08 17:09:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:37,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 17:09:38,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:38,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997312480] [2024-11-08 17:09:38,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997312480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:38,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:38,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:09:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60924746] [2024-11-08 17:09:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:38,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:09:38,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:38,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:09:38,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:09:38,729 INFO L87 Difference]: Start difference. First operand 4255 states and 5596 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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) [2024-11-08 17:09:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:38,949 INFO L93 Difference]: Finished difference Result 8044 states and 10590 transitions. [2024-11-08 17:09:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:09:38,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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 151 [2024-11-08 17:09:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:38,962 INFO L225 Difference]: With dead ends: 8044 [2024-11-08 17:09:38,962 INFO L226 Difference]: Without dead ends: 4336 [2024-11-08 17:09:38,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:09:38,966 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 459 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:38,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 612 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:09:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2024-11-08 17:09:39,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4277. [2024-11-08 17:09:39,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 4276 states have (on average 1.3161833489242283) internal successors, (5628), 4276 states have internal predecessors, (5628), 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) [2024-11-08 17:09:39,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 5628 transitions. [2024-11-08 17:09:39,059 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 5628 transitions. Word has length 151 [2024-11-08 17:09:39,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:39,059 INFO L471 AbstractCegarLoop]: Abstraction has 4277 states and 5628 transitions. [2024-11-08 17:09:39,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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) [2024-11-08 17:09:39,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 5628 transitions. [2024-11-08 17:09:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-08 17:09:39,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:39,063 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:39,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 17:09:39,063 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:39,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash 840255790, now seen corresponding path program 2 times [2024-11-08 17:09:39,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:39,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509974097] [2024-11-08 17:09:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:39,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 32 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509974097] [2024-11-08 17:09:43,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509974097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661309233] [2024-11-08 17:09:43,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:09:43,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:43,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:43,935 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:43,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:09:44,748 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:09:44,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:09:44,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-08 17:09:44,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 64 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 17:09:46,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661309233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:50,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:50,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 25] total 64 [2024-11-08 17:09:50,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413068755] [2024-11-08 17:09:50,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:50,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-08 17:09:50,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:50,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-08 17:09:50,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3727, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 17:09:50,992 INFO L87 Difference]: Start difference. First operand 4277 states and 5628 transitions. Second operand has 64 states, 64 states have (on average 6.390625) internal successors, (409), 64 states have internal predecessors, (409), 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) [2024-11-08 17:09:57,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:57,708 INFO L93 Difference]: Finished difference Result 10021 states and 13121 transitions. [2024-11-08 17:09:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-08 17:09:57,709 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.390625) internal successors, (409), 64 states have internal predecessors, (409), 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 152 [2024-11-08 17:09:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:57,723 INFO L225 Difference]: With dead ends: 10021 [2024-11-08 17:09:57,723 INFO L226 Difference]: Without dead ends: 6748 [2024-11-08 17:09:57,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5581 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1774, Invalid=17966, Unknown=0, NotChecked=0, Total=19740 [2024-11-08 17:09:57,730 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 1807 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:57,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 3454 Invalid, 3407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3371 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 17:09:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2024-11-08 17:09:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 4230. [2024-11-08 17:09:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4229 states have (on average 1.3152045400803973) internal successors, (5562), 4229 states have internal predecessors, (5562), 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) [2024-11-08 17:09:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 5562 transitions. [2024-11-08 17:09:57,839 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 5562 transitions. Word has length 152 [2024-11-08 17:09:57,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:57,840 INFO L471 AbstractCegarLoop]: Abstraction has 4230 states and 5562 transitions. [2024-11-08 17:09:57,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.390625) internal successors, (409), 64 states have internal predecessors, (409), 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) [2024-11-08 17:09:57,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 5562 transitions. [2024-11-08 17:09:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-08 17:09:57,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:57,845 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:57,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:09:58,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 17:09:58,047 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:58,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:58,047 INFO L85 PathProgramCache]: Analyzing trace with hash -121782563, now seen corresponding path program 2 times [2024-11-08 17:09:58,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:58,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539126141] [2024-11-08 17:09:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:58,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:02,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539126141] [2024-11-08 17:10:02,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539126141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256186455] [2024-11-08 17:10:02,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:10:02,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:02,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:02,914 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:02,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:10:04,021 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:10:04,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:10:04,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-08 17:10:04,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:10:06,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:11,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256186455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:11,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:11,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 28] total 67 [2024-11-08 17:10:11,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543577219] [2024-11-08 17:10:11,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:11,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-08 17:10:11,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:11,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-08 17:10:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=4141, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 17:10:11,162 INFO L87 Difference]: Start difference. First operand 4230 states and 5562 transitions. Second operand has 67 states, 67 states have (on average 6.373134328358209) internal successors, (427), 67 states have internal predecessors, (427), 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) [2024-11-08 17:10:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:10:15,445 INFO L93 Difference]: Finished difference Result 8522 states and 11136 transitions. [2024-11-08 17:10:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 17:10:15,446 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 6.373134328358209) internal successors, (427), 67 states have internal predecessors, (427), 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 153 [2024-11-08 17:10:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:10:15,454 INFO L225 Difference]: With dead ends: 8522 [2024-11-08 17:10:15,454 INFO L226 Difference]: Without dead ends: 5429 [2024-11-08 17:10:15,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2999 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=905, Invalid=9807, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 17:10:15,460 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 947 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 3525 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 4636 SdHoareTripleChecker+Invalid, 3553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:10:15,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 4636 Invalid, 3553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3525 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 17:10:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2024-11-08 17:10:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 4429. [2024-11-08 17:10:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 4428 states have (on average 1.3134598012646792) internal successors, (5816), 4428 states have internal predecessors, (5816), 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) [2024-11-08 17:10:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 5816 transitions. [2024-11-08 17:10:15,559 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 5816 transitions. Word has length 153 [2024-11-08 17:10:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:10:15,559 INFO L471 AbstractCegarLoop]: Abstraction has 4429 states and 5816 transitions. [2024-11-08 17:10:15,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 6.373134328358209) internal successors, (427), 67 states have internal predecessors, (427), 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) [2024-11-08 17:10:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 5816 transitions. [2024-11-08 17:10:15,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-08 17:10:15,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:10:15,563 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:15,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:10:15,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 17:10:15,764 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:10:15,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1172960765, now seen corresponding path program 2 times [2024-11-08 17:10:15,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:15,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5454234] [2024-11-08 17:10:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:18,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5454234] [2024-11-08 17:10:18,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5454234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526426058] [2024-11-08 17:10:18,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:10:18,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:18,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:18,755 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:18,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:10:19,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:10:19,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:10:19,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-08 17:10:19,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:21,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:24,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526426058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:24,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:24,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 24] total 54 [2024-11-08 17:10:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611244575] [2024-11-08 17:10:24,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:24,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 17:10:24,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 17:10:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2625, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 17:10:24,699 INFO L87 Difference]: Start difference. First operand 4429 states and 5816 transitions. Second operand has 54 states, 54 states have (on average 7.981481481481482) internal successors, (431), 54 states have internal predecessors, (431), 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) [2024-11-08 17:10:31,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:10:31,258 INFO L93 Difference]: Finished difference Result 14439 states and 18674 transitions. [2024-11-08 17:10:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-08 17:10:31,258 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.981481481481482) internal successors, (431), 54 states have internal predecessors, (431), 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 154 [2024-11-08 17:10:31,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:10:31,275 INFO L225 Difference]: With dead ends: 14439 [2024-11-08 17:10:31,275 INFO L226 Difference]: Without dead ends: 11346 [2024-11-08 17:10:31,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4774 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1838, Invalid=15454, Unknown=0, NotChecked=0, Total=17292 [2024-11-08 17:10:31,282 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 1784 mSDsluCounter, 10962 mSDsCounter, 0 mSdLazyCounter, 5443 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 11301 SdHoareTripleChecker+Invalid, 5470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:10:31,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1784 Valid, 11301 Invalid, 5470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 5443 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 17:10:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11346 states. [2024-11-08 17:10:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11346 to 5928. [2024-11-08 17:10:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5928 states, 5927 states have (on average 1.3102750126539564) internal successors, (7766), 5927 states have internal predecessors, (7766), 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) [2024-11-08 17:10:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 7766 transitions. [2024-11-08 17:10:31,432 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 7766 transitions. Word has length 154 [2024-11-08 17:10:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:10:31,432 INFO L471 AbstractCegarLoop]: Abstraction has 5928 states and 7766 transitions. [2024-11-08 17:10:31,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.981481481481482) internal successors, (431), 54 states have internal predecessors, (431), 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) [2024-11-08 17:10:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 7766 transitions. [2024-11-08 17:10:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-08 17:10:31,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:10:31,436 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:31,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:10:31,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 17:10:31,637 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:10:31,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash -456087814, now seen corresponding path program 2 times [2024-11-08 17:10:31,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:31,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322203308] [2024-11-08 17:10:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:31,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:34,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322203308] [2024-11-08 17:10:34,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322203308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:34,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530808197] [2024-11-08 17:10:34,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:10:34,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:34,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:34,947 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:34,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:10:36,065 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:10:36,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:10:36,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-11-08 17:10:36,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:38,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:10:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530808197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:45,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:45,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26, 28] total 67 [2024-11-08 17:10:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950674495] [2024-11-08 17:10:45,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:45,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-08 17:10:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-08 17:10:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=4114, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 17:10:45,791 INFO L87 Difference]: Start difference. First operand 5928 states and 7766 transitions. Second operand has 67 states, 67 states have (on average 6.462686567164179) internal successors, (433), 67 states have internal predecessors, (433), 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) [2024-11-08 17:10:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:10:50,708 INFO L93 Difference]: Finished difference Result 10429 states and 13617 transitions. [2024-11-08 17:10:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-08 17:10:50,709 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 6.462686567164179) internal successors, (433), 67 states have internal predecessors, (433), 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 155 [2024-11-08 17:10:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:10:50,715 INFO L225 Difference]: With dead ends: 10429 [2024-11-08 17:10:50,716 INFO L226 Difference]: Without dead ends: 6475 [2024-11-08 17:10:50,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3738 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1205, Invalid=12135, Unknown=0, NotChecked=0, Total=13340 [2024-11-08 17:10:50,721 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 1336 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:10:50,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 3645 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2946 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:10:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2024-11-08 17:10:50,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 5241. [2024-11-08 17:10:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5240 states have (on average 1.3145038167938932) internal successors, (6888), 5240 states have internal predecessors, (6888), 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) [2024-11-08 17:10:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 6888 transitions. [2024-11-08 17:10:50,869 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 6888 transitions. Word has length 155 [2024-11-08 17:10:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:10:50,870 INFO L471 AbstractCegarLoop]: Abstraction has 5241 states and 6888 transitions. [2024-11-08 17:10:50,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 6.462686567164179) internal successors, (433), 67 states have internal predecessors, (433), 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) [2024-11-08 17:10:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 6888 transitions. [2024-11-08 17:10:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-08 17:10:50,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:10:50,879 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 17:10:50,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 17:10:51,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 17:10:51,080 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:10:51,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash 577547842, now seen corresponding path program 2 times [2024-11-08 17:10:51,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:51,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379567659] [2024-11-08 17:10:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:51,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:10:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 17:10:53,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:10:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379567659] [2024-11-08 17:10:53,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379567659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:10:53,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995632507] [2024-11-08 17:10:53,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:10:53,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:53,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:10:53,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:10:53,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:10:54,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:10:54,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:10:54,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 17:10:54,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:10:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 17:10:55,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:10:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 162 proven. 48 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 17:10:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995632507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:10:56,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:10:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2024-11-08 17:10:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616628978] [2024-11-08 17:10:56,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:10:56,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:10:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:10:56,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:10:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:10:56,046 INFO L87 Difference]: Start difference. First operand 5241 states and 6888 transitions. Second operand has 13 states, 13 states have (on average 25.692307692307693) internal successors, (334), 13 states have internal predecessors, (334), 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) [2024-11-08 17:10:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:10:56,334 INFO L93 Difference]: Finished difference Result 18225 states and 23815 transitions. [2024-11-08 17:10:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:10:56,335 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.692307692307693) internal successors, (334), 13 states have internal predecessors, (334), 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 202 [2024-11-08 17:10:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:10:56,345 INFO L225 Difference]: With dead ends: 18225 [2024-11-08 17:10:56,345 INFO L226 Difference]: Without dead ends: 13213 [2024-11-08 17:10:56,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:10:56,350 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 1036 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:10:56,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1065 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:10:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13213 states. [2024-11-08 17:10:56,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13213 to 10039. [2024-11-08 17:10:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10039 states, 10038 states have (on average 1.3042438732815302) internal successors, (13092), 10038 states have internal predecessors, (13092), 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) [2024-11-08 17:10:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10039 states to 10039 states and 13092 transitions. [2024-11-08 17:10:56,591 INFO L78 Accepts]: Start accepts. Automaton has 10039 states and 13092 transitions. Word has length 202 [2024-11-08 17:10:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:10:56,592 INFO L471 AbstractCegarLoop]: Abstraction has 10039 states and 13092 transitions. [2024-11-08 17:10:56,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.692307692307693) internal successors, (334), 13 states have internal predecessors, (334), 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) [2024-11-08 17:10:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 10039 states and 13092 transitions. [2024-11-08 17:10:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-08 17:10:56,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:10:56,606 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:10:56,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 17:10:56,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:10:56,807 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:10:56,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:10:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash 151499735, now seen corresponding path program 1 times [2024-11-08 17:10:56,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:10:56,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357953592] [2024-11-08 17:10:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:10:56,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:10:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 24 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:08,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357953592] [2024-11-08 17:11:08,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357953592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99660134] [2024-11-08 17:11:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:08,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:08,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:08,687 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:08,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:11:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:10,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 261 conjuncts are in the unsatisfiable core [2024-11-08 17:11:10,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:11:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 36 proven. 206 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:11:16,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:11:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 15 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:24,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99660134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:11:24,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:11:24,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 92 [2024-11-08 17:11:24,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579541723] [2024-11-08 17:11:24,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:11:24,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-08 17:11:24,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-08 17:11:24,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=7979, Unknown=0, NotChecked=0, Total=8372 [2024-11-08 17:11:24,626 INFO L87 Difference]: Start difference. First operand 10039 states and 13092 transitions. Second operand has 92 states, 92 states have (on average 6.434782608695652) internal successors, (592), 92 states have internal predecessors, (592), 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) [2024-11-08 17:11:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:11:49,454 INFO L93 Difference]: Finished difference Result 58185 states and 75653 transitions. [2024-11-08 17:11:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-08 17:11:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 6.434782608695652) internal successors, (592), 92 states have internal predecessors, (592), 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 203 [2024-11-08 17:11:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:11:49,492 INFO L225 Difference]: With dead ends: 58185 [2024-11-08 17:11:49,492 INFO L226 Difference]: Without dead ends: 48505 [2024-11-08 17:11:49,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22160 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=4927, Invalid=62933, Unknown=0, NotChecked=0, Total=67860 [2024-11-08 17:11:49,509 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 6468 mSDsluCounter, 12207 mSDsCounter, 0 mSdLazyCounter, 9448 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6468 SdHoareTripleChecker+Valid, 12479 SdHoareTripleChecker+Invalid, 9565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 9448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:11:49,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6468 Valid, 12479 Invalid, 9565 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 9448 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-08 17:11:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48505 states. [2024-11-08 17:11:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48505 to 11199. [2024-11-08 17:11:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11199 states, 11198 states have (on average 1.2990712627254868) internal successors, (14547), 11198 states have internal predecessors, (14547), 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) [2024-11-08 17:11:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11199 states to 11199 states and 14547 transitions. [2024-11-08 17:11:50,010 INFO L78 Accepts]: Start accepts. Automaton has 11199 states and 14547 transitions. Word has length 203 [2024-11-08 17:11:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:11:50,011 INFO L471 AbstractCegarLoop]: Abstraction has 11199 states and 14547 transitions. [2024-11-08 17:11:50,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 6.434782608695652) internal successors, (592), 92 states have internal predecessors, (592), 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) [2024-11-08 17:11:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 11199 states and 14547 transitions. [2024-11-08 17:11:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-08 17:11:50,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:11:50,028 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:50,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 17:11:50,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:50,230 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:11:50,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1616903238, now seen corresponding path program 1 times [2024-11-08 17:11:50,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514049887] [2024-11-08 17:11:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:50,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 17:11:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514049887] [2024-11-08 17:11:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514049887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:11:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329075] [2024-11-08 17:11:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:52,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:11:52,571 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:11:52,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:11:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:55,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-11-08 17:11:55,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:12:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 64 proven. 175 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:12:01,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:12:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 15 proven. 181 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 17:12:08,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:12:08,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:12:08,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 31, 28] total 63 [2024-11-08 17:12:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961128518] [2024-11-08 17:12:08,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:12:08,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 17:12:08,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:12:08,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 17:12:08,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=3542, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 17:12:08,554 INFO L87 Difference]: Start difference. First operand 11199 states and 14547 transitions. Second operand has 63 states, 63 states have (on average 8.206349206349206) internal successors, (517), 63 states have internal predecessors, (517), 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) [2024-11-08 17:13:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:13:05,524 INFO L93 Difference]: Finished difference Result 101321 states and 131950 transitions. [2024-11-08 17:13:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 367 states. [2024-11-08 17:13:05,526 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 8.206349206349206) internal successors, (517), 63 states have internal predecessors, (517), 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 204 [2024-11-08 17:13:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:13:05,600 INFO L225 Difference]: With dead ends: 101321 [2024-11-08 17:13:05,600 INFO L226 Difference]: Without dead ends: 90190 [2024-11-08 17:13:05,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73852 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=12994, Invalid=169762, Unknown=0, NotChecked=0, Total=182756 [2024-11-08 17:13:05,625 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 16345 mSDsluCounter, 10016 mSDsCounter, 0 mSdLazyCounter, 6964 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16345 SdHoareTripleChecker+Valid, 10253 SdHoareTripleChecker+Invalid, 7181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 6964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:13:05,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16345 Valid, 10253 Invalid, 7181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [217 Valid, 6964 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-08 17:13:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90190 states. [2024-11-08 17:13:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90190 to 32010. [2024-11-08 17:13:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32010 states, 32009 states have (on average 1.298228623199725) internal successors, (41555), 32009 states have internal predecessors, (41555), 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) [2024-11-08 17:13:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32010 states to 32010 states and 41555 transitions. [2024-11-08 17:13:06,716 INFO L78 Accepts]: Start accepts. Automaton has 32010 states and 41555 transitions. Word has length 204 [2024-11-08 17:13:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:13:06,717 INFO L471 AbstractCegarLoop]: Abstraction has 32010 states and 41555 transitions. [2024-11-08 17:13:06,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 8.206349206349206) internal successors, (517), 63 states have internal predecessors, (517), 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) [2024-11-08 17:13:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 32010 states and 41555 transitions. [2024-11-08 17:13:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-08 17:13:06,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:13:06,761 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:13:06,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 17:13:06,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 17:13:06,962 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:13:06,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1716976069, now seen corresponding path program 1 times [2024-11-08 17:13:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:06,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448634335] [2024-11-08 17:13:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:06,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 48 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:13:18,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:18,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448634335] [2024-11-08 17:13:18,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448634335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:13:18,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883835635] [2024-11-08 17:13:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:18,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:13:18,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:13:18,316 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:13:18,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:13:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:20,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 305 conjuncts are in the unsatisfiable core [2024-11-08 17:13:20,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:13:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 78 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:13:29,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:13:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 39 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:13:46,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883835635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:13:46,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:13:46,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 44, 40] total 113 [2024-11-08 17:13:46,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623208259] [2024-11-08 17:13:46,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:13:46,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-08 17:13:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-08 17:13:46,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=11893, Unknown=0, NotChecked=0, Total=12656 [2024-11-08 17:13:46,853 INFO L87 Difference]: Start difference. First operand 32010 states and 41555 transitions. Second operand has 113 states, 113 states have (on average 5.20353982300885) internal successors, (588), 113 states have internal predecessors, (588), 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) [2024-11-08 17:16:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:16:04,495 INFO L93 Difference]: Finished difference Result 171222 states and 223942 transitions. [2024-11-08 17:16:04,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 509 states. [2024-11-08 17:16:04,496 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 5.20353982300885) internal successors, (588), 113 states have internal predecessors, (588), 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 205 [2024-11-08 17:16:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:16:04,637 INFO L225 Difference]: With dead ends: 171222 [2024-11-08 17:16:04,637 INFO L226 Difference]: Without dead ends: 139280 [2024-11-08 17:16:04,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 617 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154140 ImplicationChecksByTransitivity, 128.8s TimeCoverageRelationStatistics Valid=23746, Invalid=358796, Unknown=0, NotChecked=0, Total=382542 [2024-11-08 17:16:04,689 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 12431 mSDsluCounter, 15640 mSDsCounter, 0 mSdLazyCounter, 17902 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12431 SdHoareTripleChecker+Valid, 15840 SdHoareTripleChecker+Invalid, 18367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 17902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:16:04,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12431 Valid, 15840 Invalid, 18367 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [465 Valid, 17902 Invalid, 0 Unknown, 0 Unchecked, 17.0s Time] [2024-11-08 17:16:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139280 states. [2024-11-08 17:16:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139280 to 81667. [2024-11-08 17:16:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81667 states, 81666 states have (on average 1.2961452746553033) internal successors, (105851), 81666 states have internal predecessors, (105851), 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) [2024-11-08 17:16:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81667 states to 81667 states and 105851 transitions. [2024-11-08 17:16:07,216 INFO L78 Accepts]: Start accepts. Automaton has 81667 states and 105851 transitions. Word has length 205 [2024-11-08 17:16:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:16:07,217 INFO L471 AbstractCegarLoop]: Abstraction has 81667 states and 105851 transitions. [2024-11-08 17:16:07,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 5.20353982300885) internal successors, (588), 113 states have internal predecessors, (588), 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) [2024-11-08 17:16:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 81667 states and 105851 transitions. [2024-11-08 17:16:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-08 17:16:07,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:16:07,273 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:07,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 17:16:07,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-08 17:16:07,474 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:16:07,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:07,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1286742310, now seen corresponding path program 1 times [2024-11-08 17:16:07,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:07,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484715528] [2024-11-08 17:16:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:07,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 106 proven. 135 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:16:15,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484715528] [2024-11-08 17:16:15,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484715528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312353897] [2024-11-08 17:16:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:15,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:15,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:15,264 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:15,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:16:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:16,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 187 conjuncts are in the unsatisfiable core [2024-11-08 17:16:16,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 91 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:21,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 45 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:28,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312353897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:28,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:28,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30, 33] total 81 [2024-11-08 17:16:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692240785] [2024-11-08 17:16:28,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:28,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-08 17:16:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-08 17:16:28,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=6078, Unknown=0, NotChecked=0, Total=6480 [2024-11-08 17:16:28,684 INFO L87 Difference]: Start difference. First operand 81667 states and 105851 transitions. Second operand has 81 states, 81 states have (on average 7.2592592592592595) internal successors, (588), 81 states have internal predecessors, (588), 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) [2024-11-08 17:17:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:05,674 INFO L93 Difference]: Finished difference Result 361606 states and 471785 transitions. [2024-11-08 17:17:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2024-11-08 17:17:05,674 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 7.2592592592592595) internal successors, (588), 81 states have internal predecessors, (588), 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 206 [2024-11-08 17:17:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:05,964 INFO L225 Difference]: With dead ends: 361606 [2024-11-08 17:17:05,965 INFO L226 Difference]: Without dead ends: 286845 [2024-11-08 17:17:06,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55013 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=8243, Invalid=132757, Unknown=0, NotChecked=0, Total=141000 [2024-11-08 17:17:06,030 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 4837 mSDsluCounter, 13807 mSDsCounter, 0 mSdLazyCounter, 9332 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4837 SdHoareTripleChecker+Valid, 14085 SdHoareTripleChecker+Invalid, 9455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:06,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4837 Valid, 14085 Invalid, 9455 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 9332 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-08 17:17:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286845 states. [2024-11-08 17:17:09,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286845 to 120310. [2024-11-08 17:17:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120310 states, 120309 states have (on average 1.3099020023439643) internal successors, (157593), 120309 states have internal predecessors, (157593), 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) [2024-11-08 17:17:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120310 states to 120310 states and 157593 transitions. [2024-11-08 17:17:10,186 INFO L78 Accepts]: Start accepts. Automaton has 120310 states and 157593 transitions. Word has length 206 [2024-11-08 17:17:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:10,187 INFO L471 AbstractCegarLoop]: Abstraction has 120310 states and 157593 transitions. [2024-11-08 17:17:10,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 7.2592592592592595) internal successors, (588), 81 states have internal predecessors, (588), 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) [2024-11-08 17:17:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 120310 states and 157593 transitions. [2024-11-08 17:17:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-08 17:17:10,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:10,230 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:10,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 17:17:10,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-08 17:17:10,431 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:17:10,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash 75080191, now seen corresponding path program 1 times [2024-11-08 17:17:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:17:10,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514091356] [2024-11-08 17:17:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:10,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:17:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 36 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:20,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:17:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514091356] [2024-11-08 17:17:20,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514091356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:17:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926666725] [2024-11-08 17:17:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:20,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:20,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:20,437 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:20,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc56bcad-b867-41a3-bfaa-7b16947a8e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:17:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:22,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 250 conjuncts are in the unsatisfiable core [2024-11-08 17:17:22,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 133 proven. 111 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:17:29,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:17:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 30 proven. 177 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 17:17:39,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926666725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:17:39,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:17:39,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 33] total 89 [2024-11-08 17:17:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099774146] [2024-11-08 17:17:39,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:17:39,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-08 17:17:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:17:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-08 17:17:39,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=7352, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 17:17:39,125 INFO L87 Difference]: Start difference. First operand 120310 states and 157593 transitions. Second operand has 89 states, 89 states have (on average 6.325842696629214) internal successors, (563), 89 states have internal predecessors, (563), 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)