./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 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/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_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC --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 0.3.0-dev-6497de0 [2024-11-24 00:39:32,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:39:32,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:39:32,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:39:32,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:39:32,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:39:32,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:39:32,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:39:32,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:39:32,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:39:32,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:39:32,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:39:32,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:39:32,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:39:32,851 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:39:32,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:39:32,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:39:32,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:39:32,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:39:32,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:39:32,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:39:32,852 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:39:32,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:39:32,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:39:32,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:39:32,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:39:32,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:39:32,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:39:32,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:39:32,855 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC 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 [2024-11-24 00:39:33,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:39:33,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:39:33,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:39:33,207 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:39:33,208 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:39:33,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-24 00:39:36,279 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/data/1b9d17b58/a8297a8552014a3ca373681755742b8e/FLAGe17edce70 [2024-11-24 00:39:36,585 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:39:36,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-24 00:39:36,595 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/data/1b9d17b58/a8297a8552014a3ca373681755742b8e/FLAGe17edce70 [2024-11-24 00:39:36,611 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/data/1b9d17b58/a8297a8552014a3ca373681755742b8e [2024-11-24 00:39:36,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:39:36,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:39:36,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:39:36,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:39:36,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:39:36,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:39:36" (1/1) ... [2024-11-24 00:39:36,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8da2773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:36, skipping insertion in model container [2024-11-24 00:39:36,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:39:36" (1/1) ... [2024-11-24 00:39:36,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:39:36,830 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_c6dc0128-c9a2-40de-b1a7-1c61155569c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-11-24 00:39:36,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:39:36,979 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:39:36,989 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_c6dc0128-c9a2-40de-b1a7-1c61155569c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-11-24 00:39:37,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:39:37,073 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:39:37,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37 WrapperNode [2024-11-24 00:39:37,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:39:37,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:39:37,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:39:37,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:39:37,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,208 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 516 [2024-11-24 00:39:37,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:39:37,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:39:37,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:39:37,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:39:37,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,250 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,306 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]. [2024-11-24 00:39:37,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,343 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:39:37,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:39:37,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:39:37,421 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:39:37,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (1/1) ... [2024-11-24 00:39:37,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:39:37,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:37,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:39:37,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:39:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:39:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:39:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:39:37,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:39:37,701 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:39:37,703 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:39:38,901 INFO L? ?]: Removed 314 outVars from TransFormulas that were not future-live. [2024-11-24 00:39:38,901 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:39:38,915 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:39:38,915 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:39:38,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:39:38 BoogieIcfgContainer [2024-11-24 00:39:38,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:39:38,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:39:38,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:39:38,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:39:38,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:39:36" (1/3) ... [2024-11-24 00:39:38,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12de11d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:39:38, skipping insertion in model container [2024-11-24 00:39:38,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:39:37" (2/3) ... [2024-11-24 00:39:38,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12de11d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:39:38, skipping insertion in model container [2024-11-24 00:39:38,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:39:38" (3/3) ... [2024-11-24 00:39:38,925 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-24 00:39:38,942 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:39:38,943 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c that has 1 procedures, 130 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:39:39,068 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:39:39,084 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;@561f2302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:39:39,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:39:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 128 states have (on average 1.4921875) internal successors, (191), 129 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) [2024-11-24 00:39:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-24 00:39:39,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:39,101 INFO L218 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] [2024-11-24 00:39:39,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:39,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1161288925, now seen corresponding path program 1 times [2024-11-24 00:39:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782765802] [2024-11-24 00:39:39,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:39,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:40,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:40,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782765802] [2024-11-24 00:39:40,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782765802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:40,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:40,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:39:40,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795270931] [2024-11-24 00:39:40,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:40,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:39:40,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:40,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:39:40,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:39:40,080 INFO L87 Difference]: Start difference. First operand has 130 states, 128 states have (on average 1.4921875) internal successors, (191), 129 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) 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) [2024-11-24 00:39:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:40,140 INFO L93 Difference]: Finished difference Result 233 states and 345 transitions. [2024-11-24 00:39:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:39:40,143 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 [2024-11-24 00:39:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:40,151 INFO L225 Difference]: With dead ends: 233 [2024-11-24 00:39:40,151 INFO L226 Difference]: Without dead ends: 129 [2024-11-24 00:39:40,154 INFO L434 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 [2024-11-24 00:39:40,161 INFO L435 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 [2024-11-24 00:39:40,164 INFO L436 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] [2024-11-24 00:39:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-24 00:39:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-24 00:39:40,200 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) [2024-11-24 00:39:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 189 transitions. [2024-11-24 00:39:40,206 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 189 transitions. Word has length 45 [2024-11-24 00:39:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:40,206 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 189 transitions. [2024-11-24 00:39:40,207 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) [2024-11-24 00:39:40,207 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 189 transitions. [2024-11-24 00:39:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-24 00:39:40,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:40,208 INFO L218 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] [2024-11-24 00:39:40,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:39:40,209 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:40,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:40,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1638522894, now seen corresponding path program 1 times [2024-11-24 00:39:40,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:40,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654567815] [2024-11-24 00:39:40,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:40,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654567815] [2024-11-24 00:39:40,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654567815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:40,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:40,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:39:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122084572] [2024-11-24 00:39:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:40,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:39:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:40,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:39:40,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:39:40,542 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) [2024-11-24 00:39:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:40,605 INFO L93 Difference]: Finished difference Result 234 states and 343 transitions. [2024-11-24 00:39:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:39:40,606 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 [2024-11-24 00:39:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:40,610 INFO L225 Difference]: With dead ends: 234 [2024-11-24 00:39:40,610 INFO L226 Difference]: Without dead ends: 131 [2024-11-24 00:39:40,611 INFO L434 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 [2024-11-24 00:39:40,611 INFO L435 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 [2024-11-24 00:39:40,612 INFO L436 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] [2024-11-24 00:39:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-24 00:39:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-24 00:39:40,628 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) [2024-11-24 00:39:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 191 transitions. [2024-11-24 00:39:40,633 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 191 transitions. Word has length 46 [2024-11-24 00:39:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:40,633 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 191 transitions. [2024-11-24 00:39:40,633 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) [2024-11-24 00:39:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 191 transitions. [2024-11-24 00:39:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-24 00:39:40,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:40,635 INFO L218 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] [2024-11-24 00:39:40,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:39:40,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:40,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -352567844, now seen corresponding path program 1 times [2024-11-24 00:39:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:40,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151168295] [2024-11-24 00:39:40,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:41,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151168295] [2024-11-24 00:39:41,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151168295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:41,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:41,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:39:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563840852] [2024-11-24 00:39:41,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:41,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:39:41,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:41,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:39:41,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:39:41,280 INFO L87 Difference]: Start difference. First operand 131 states and 191 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2024-11-24 00:39:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:41,391 INFO L93 Difference]: Finished difference Result 241 states and 352 transitions. [2024-11-24 00:39:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:39:41,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 [2024-11-24 00:39:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:41,394 INFO L225 Difference]: With dead ends: 241 [2024-11-24 00:39:41,394 INFO L226 Difference]: Without dead ends: 136 [2024-11-24 00:39:41,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:39:41,395 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:39:41,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 889 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:39:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-24 00:39:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-24 00:39:41,410 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) [2024-11-24 00:39:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 197 transitions. [2024-11-24 00:39:41,415 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 197 transitions. Word has length 47 [2024-11-24 00:39:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:41,415 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 197 transitions. [2024-11-24 00:39:41,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2024-11-24 00:39:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 197 transitions. [2024-11-24 00:39:41,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-24 00:39:41,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:41,416 INFO L218 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] [2024-11-24 00:39:41,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:39:41,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:41,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1430781511, now seen corresponding path program 1 times [2024-11-24 00:39:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:41,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632111832] [2024-11-24 00:39:41,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:41,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:41,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:41,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632111832] [2024-11-24 00:39:41,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632111832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:41,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:41,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:39:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212040549] [2024-11-24 00:39:41,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:41,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:39:41,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:41,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:39:41,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:39:41,782 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) [2024-11-24 00:39:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:41,888 INFO L93 Difference]: Finished difference Result 257 states and 373 transitions. [2024-11-24 00:39:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:39:41,889 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 [2024-11-24 00:39:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:41,890 INFO L225 Difference]: With dead ends: 257 [2024-11-24 00:39:41,891 INFO L226 Difference]: Without dead ends: 147 [2024-11-24 00:39:41,891 INFO L434 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 [2024-11-24 00:39:41,894 INFO L435 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 [2024-11-24 00:39:41,895 INFO L436 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] [2024-11-24 00:39:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-24 00:39:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-24 00:39:41,901 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) [2024-11-24 00:39:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 211 transitions. [2024-11-24 00:39:41,902 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 211 transitions. Word has length 48 [2024-11-24 00:39:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:41,903 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 211 transitions. [2024-11-24 00:39:41,903 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) [2024-11-24 00:39:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 211 transitions. [2024-11-24 00:39:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-24 00:39:41,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:41,905 INFO L218 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] [2024-11-24 00:39:41,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:39:41,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:41,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1285611392, now seen corresponding path program 1 times [2024-11-24 00:39:41,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:41,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605599838] [2024-11-24 00:39:41,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605599838] [2024-11-24 00:39:42,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605599838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:42,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:42,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:39:42,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48234285] [2024-11-24 00:39:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:42,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:39:42,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:42,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:39:42,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:39:42,111 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) [2024-11-24 00:39:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:42,246 INFO L93 Difference]: Finished difference Result 363 states and 519 transitions. [2024-11-24 00:39:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:39:42,248 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 [2024-11-24 00:39:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:42,249 INFO L225 Difference]: With dead ends: 363 [2024-11-24 00:39:42,249 INFO L226 Difference]: Without dead ends: 242 [2024-11-24 00:39:42,250 INFO L434 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 [2024-11-24 00:39:42,254 INFO L435 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 [2024-11-24 00:39:42,255 INFO L436 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] [2024-11-24 00:39:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-24 00:39:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 194. [2024-11-24 00:39:42,267 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) [2024-11-24 00:39:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2024-11-24 00:39:42,268 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 48 [2024-11-24 00:39:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:42,269 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2024-11-24 00:39:42,269 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) [2024-11-24 00:39:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2024-11-24 00:39:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 00:39:42,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:42,270 INFO L218 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] [2024-11-24 00:39:42,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:39:42,271 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:42,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1420291833, now seen corresponding path program 1 times [2024-11-24 00:39:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:42,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372147289] [2024-11-24 00:39:42,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:42,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:42,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:42,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372147289] [2024-11-24 00:39:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372147289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:42,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:39:42,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342825442] [2024-11-24 00:39:42,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:42,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:39:42,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:42,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:39:42,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:39:42,503 INFO L87 Difference]: Start difference. First operand 194 states and 279 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) [2024-11-24 00:39:42,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:42,620 INFO L93 Difference]: Finished difference Result 357 states and 507 transitions. [2024-11-24 00:39:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:39:42,624 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 [2024-11-24 00:39:42,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:42,625 INFO L225 Difference]: With dead ends: 357 [2024-11-24 00:39:42,625 INFO L226 Difference]: Without dead ends: 228 [2024-11-24 00:39:42,626 INFO L434 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 [2024-11-24 00:39:42,626 INFO L435 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 [2024-11-24 00:39:42,627 INFO L436 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] [2024-11-24 00:39:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-24 00:39:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 188. [2024-11-24 00:39:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4385026737967914) internal successors, (269), 187 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:39:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 269 transitions. [2024-11-24 00:39:42,646 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 269 transitions. Word has length 49 [2024-11-24 00:39:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:42,647 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 269 transitions. [2024-11-24 00:39:42,647 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) [2024-11-24 00:39:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 269 transitions. [2024-11-24 00:39:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 00:39:42,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:42,648 INFO L218 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] [2024-11-24 00:39:42,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:39:42,649 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:42,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash -559412370, now seen corresponding path program 1 times [2024-11-24 00:39:42,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:42,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500301086] [2024-11-24 00:39:42,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:42,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:42,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:42,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500301086] [2024-11-24 00:39:42,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500301086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:42,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:42,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:39:42,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001243881] [2024-11-24 00:39:42,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:42,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:39:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:42,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:39:42,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:39:42,928 INFO L87 Difference]: Start difference. First operand 188 states and 269 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) [2024-11-24 00:39:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:43,031 INFO L93 Difference]: Finished difference Result 337 states and 480 transitions. [2024-11-24 00:39:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:39:43,032 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 [2024-11-24 00:39:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:43,033 INFO L225 Difference]: With dead ends: 337 [2024-11-24 00:39:43,033 INFO L226 Difference]: Without dead ends: 206 [2024-11-24 00:39:43,033 INFO L434 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 [2024-11-24 00:39:43,034 INFO L435 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 [2024-11-24 00:39:43,034 INFO L436 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] [2024-11-24 00:39:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-24 00:39:43,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-24 00:39:43,044 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) [2024-11-24 00:39:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 291 transitions. [2024-11-24 00:39:43,049 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 291 transitions. Word has length 49 [2024-11-24 00:39:43,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:43,049 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 291 transitions. [2024-11-24 00:39:43,049 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) [2024-11-24 00:39:43,049 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 291 transitions. [2024-11-24 00:39:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 00:39:43,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:43,051 INFO L218 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] [2024-11-24 00:39:43,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:39:43,051 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:43,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1444590169, now seen corresponding path program 1 times [2024-11-24 00:39:43,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:43,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488381597] [2024-11-24 00:39:43,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:43,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488381597] [2024-11-24 00:39:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488381597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:43,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:43,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:39:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997759426] [2024-11-24 00:39:43,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:43,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:39:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:43,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:39:43,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:39:43,337 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) [2024-11-24 00:39:43,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:43,419 INFO L93 Difference]: Finished difference Result 385 states and 543 transitions. [2024-11-24 00:39:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:39:43,419 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 [2024-11-24 00:39:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:43,421 INFO L225 Difference]: With dead ends: 385 [2024-11-24 00:39:43,421 INFO L226 Difference]: Without dead ends: 228 [2024-11-24 00:39:43,421 INFO L434 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 [2024-11-24 00:39:43,422 INFO L435 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 [2024-11-24 00:39:43,422 INFO L436 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] [2024-11-24 00:39:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-24 00:39:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-24 00:39:43,429 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) [2024-11-24 00:39:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 319 transitions. [2024-11-24 00:39:43,431 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 319 transitions. Word has length 50 [2024-11-24 00:39:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:43,431 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 319 transitions. [2024-11-24 00:39:43,431 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) [2024-11-24 00:39:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 319 transitions. [2024-11-24 00:39:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 00:39:43,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:43,433 INFO L218 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] [2024-11-24 00:39:43,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:39:43,433 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:43,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash -662315090, now seen corresponding path program 1 times [2024-11-24 00:39:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:43,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012061269] [2024-11-24 00:39:43,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:43,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012061269] [2024-11-24 00:39:43,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012061269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:43,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:43,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:39:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286533332] [2024-11-24 00:39:43,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:43,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:39:43,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:43,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:39:43,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:39:43,625 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) [2024-11-24 00:39:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:43,733 INFO L93 Difference]: Finished difference Result 428 states and 595 transitions. [2024-11-24 00:39:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:39:43,734 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 [2024-11-24 00:39:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:43,736 INFO L225 Difference]: With dead ends: 428 [2024-11-24 00:39:43,736 INFO L226 Difference]: Without dead ends: 266 [2024-11-24 00:39:43,736 INFO L434 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 [2024-11-24 00:39:43,741 INFO L435 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 [2024-11-24 00:39:43,741 INFO L436 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] [2024-11-24 00:39:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-24 00:39:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 218. [2024-11-24 00:39:43,748 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) [2024-11-24 00:39:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 303 transitions. [2024-11-24 00:39:43,750 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 303 transitions. Word has length 50 [2024-11-24 00:39:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:43,750 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 303 transitions. [2024-11-24 00:39:43,750 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) [2024-11-24 00:39:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 303 transitions. [2024-11-24 00:39:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-24 00:39:43,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:43,751 INFO L218 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] [2024-11-24 00:39:43,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:39:43,752 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:43,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:43,754 INFO L85 PathProgramCache]: Analyzing trace with hash -75276800, now seen corresponding path program 1 times [2024-11-24 00:39:43,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:43,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518362130] [2024-11-24 00:39:43,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:43,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:44,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518362130] [2024-11-24 00:39:44,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518362130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:44,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:39:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924292351] [2024-11-24 00:39:44,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:44,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:39:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:44,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:39:44,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:39:44,008 INFO L87 Difference]: Start difference. First operand 218 states and 303 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) [2024-11-24 00:39:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:44,100 INFO L93 Difference]: Finished difference Result 417 states and 579 transitions. [2024-11-24 00:39:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:39:44,100 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 [2024-11-24 00:39:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:44,102 INFO L225 Difference]: With dead ends: 417 [2024-11-24 00:39:44,102 INFO L226 Difference]: Without dead ends: 240 [2024-11-24 00:39:44,102 INFO L434 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 [2024-11-24 00:39:44,103 INFO L435 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 [2024-11-24 00:39:44,103 INFO L436 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] [2024-11-24 00:39:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-24 00:39:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-24 00:39:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3849372384937237) internal successors, (331), 239 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:39:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 331 transitions. [2024-11-24 00:39:44,117 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 331 transitions. Word has length 51 [2024-11-24 00:39:44,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:44,117 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 331 transitions. [2024-11-24 00:39:44,117 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) [2024-11-24 00:39:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 331 transitions. [2024-11-24 00:39:44,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-24 00:39:44,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:44,119 INFO L218 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] [2024-11-24 00:39:44,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:39:44,119 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:44,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:44,120 INFO L85 PathProgramCache]: Analyzing trace with hash 543160409, now seen corresponding path program 1 times [2024-11-24 00:39:44,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:44,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729842489] [2024-11-24 00:39:44,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:44,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:44,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:44,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729842489] [2024-11-24 00:39:44,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729842489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:44,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:44,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:39:44,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368975904] [2024-11-24 00:39:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:44,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:39:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:44,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:39:44,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:39:44,283 INFO L87 Difference]: Start difference. First operand 240 states and 331 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) [2024-11-24 00:39:44,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:44,371 INFO L93 Difference]: Finished difference Result 444 states and 607 transitions. [2024-11-24 00:39:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:39:44,372 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 [2024-11-24 00:39:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:44,373 INFO L225 Difference]: With dead ends: 444 [2024-11-24 00:39:44,374 INFO L226 Difference]: Without dead ends: 262 [2024-11-24 00:39:44,375 INFO L434 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 [2024-11-24 00:39:44,376 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 319 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-11-24 00:39:44,377 INFO L436 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] [2024-11-24 00:39:44,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-24 00:39:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2024-11-24 00:39:44,391 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) [2024-11-24 00:39:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 315 transitions. [2024-11-24 00:39:44,392 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 315 transitions. Word has length 51 [2024-11-24 00:39:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:44,392 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 315 transitions. [2024-11-24 00:39:44,392 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) [2024-11-24 00:39:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 315 transitions. [2024-11-24 00:39:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 00:39:44,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:44,393 INFO L218 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] [2024-11-24 00:39:44,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:39:44,393 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:44,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash -131357547, now seen corresponding path program 1 times [2024-11-24 00:39:44,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:44,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473359328] [2024-11-24 00:39:44,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:44,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:44,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:44,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473359328] [2024-11-24 00:39:44,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473359328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:44,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:39:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630813528] [2024-11-24 00:39:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:44,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:39:44,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:44,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:39:44,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:39:44,560 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) [2024-11-24 00:39:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:44,617 INFO L93 Difference]: Finished difference Result 430 states and 588 transitions. [2024-11-24 00:39:44,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:39:44,618 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 [2024-11-24 00:39:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:44,619 INFO L225 Difference]: With dead ends: 430 [2024-11-24 00:39:44,620 INFO L226 Difference]: Without dead ends: 246 [2024-11-24 00:39:44,620 INFO L434 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 [2024-11-24 00:39:44,621 INFO L435 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 [2024-11-24 00:39:44,621 INFO L436 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] [2024-11-24 00:39:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-24 00:39:44,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-24 00:39:44,638 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) [2024-11-24 00:39:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2024-11-24 00:39:44,640 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 52 [2024-11-24 00:39:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:44,640 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2024-11-24 00:39:44,640 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) [2024-11-24 00:39:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2024-11-24 00:39:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 00:39:44,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:44,645 INFO L218 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] [2024-11-24 00:39:44,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:39:44,645 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:44,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash -553739812, now seen corresponding path program 1 times [2024-11-24 00:39:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354519273] [2024-11-24 00:39:44,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:44,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:44,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:44,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354519273] [2024-11-24 00:39:44,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354519273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:44,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:44,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:39:44,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164534286] [2024-11-24 00:39:44,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:44,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:39:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:44,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:39:44,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:39:44,811 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) [2024-11-24 00:39:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:44,903 INFO L93 Difference]: Finished difference Result 467 states and 631 transitions. [2024-11-24 00:39:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:39:44,904 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 [2024-11-24 00:39:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:44,905 INFO L225 Difference]: With dead ends: 467 [2024-11-24 00:39:44,906 INFO L226 Difference]: Without dead ends: 268 [2024-11-24 00:39:44,907 INFO L434 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 [2024-11-24 00:39:44,907 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 311 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-24 00:39:44,909 INFO L436 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] [2024-11-24 00:39:44,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-24 00:39:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 236. [2024-11-24 00:39:44,916 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) [2024-11-24 00:39:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 319 transitions. [2024-11-24 00:39:44,918 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 319 transitions. Word has length 52 [2024-11-24 00:39:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:44,918 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 319 transitions. [2024-11-24 00:39:44,918 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) [2024-11-24 00:39:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 319 transitions. [2024-11-24 00:39:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 00:39:44,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:44,919 INFO L218 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] [2024-11-24 00:39:44,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:39:44,919 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:44,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1014688366, now seen corresponding path program 1 times [2024-11-24 00:39:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:44,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026083839] [2024-11-24 00:39:44,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:44,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:45,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:45,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026083839] [2024-11-24 00:39:45,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026083839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:39:45,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:39:45,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:39:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212573851] [2024-11-24 00:39:45,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:39:45,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:39:45,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:45,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:39:45,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:39:45,096 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) [2024-11-24 00:39:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:45,188 INFO L93 Difference]: Finished difference Result 437 states and 591 transitions. [2024-11-24 00:39:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:39:45,189 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 [2024-11-24 00:39:45,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:45,190 INFO L225 Difference]: With dead ends: 437 [2024-11-24 00:39:45,191 INFO L226 Difference]: Without dead ends: 237 [2024-11-24 00:39:45,191 INFO L434 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 [2024-11-24 00:39:45,192 INFO L435 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 [2024-11-24 00:39:45,192 INFO L436 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] [2024-11-24 00:39:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-24 00:39:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 212. [2024-11-24 00:39:45,202 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) [2024-11-24 00:39:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 289 transitions. [2024-11-24 00:39:45,203 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 289 transitions. Word has length 53 [2024-11-24 00:39:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:45,204 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 289 transitions. [2024-11-24 00:39:45,204 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) [2024-11-24 00:39:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 289 transitions. [2024-11-24 00:39:45,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-24 00:39:45,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:45,206 INFO L218 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] [2024-11-24 00:39:45,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:39:45,207 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:45,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1013570968, now seen corresponding path program 1 times [2024-11-24 00:39:45,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:45,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551567378] [2024-11-24 00:39:45,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:48,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:48,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551567378] [2024-11-24 00:39:48,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551567378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:48,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117561828] [2024-11-24 00:39:48,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:48,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:48,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:48,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:48,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:39:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:48,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-24 00:39:48,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:52,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117561828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:55,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:55,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 25] total 54 [2024-11-24 00:39:55,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786996877] [2024-11-24 00:39:55,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:55,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-24 00:39:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:55,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-24 00:39:55,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2554, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 00:39:55,901 INFO L87 Difference]: Start difference. First operand 212 states and 289 transitions. Second operand has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 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) [2024-11-24 00:40:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:40:01,364 INFO L93 Difference]: Finished difference Result 636 states and 871 transitions. [2024-11-24 00:40:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-24 00:40:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 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 99 [2024-11-24 00:40:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:40:01,367 INFO L225 Difference]: With dead ends: 636 [2024-11-24 00:40:01,367 INFO L226 Difference]: Without dead ends: 474 [2024-11-24 00:40:01,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3944 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1254, Invalid=11628, Unknown=0, NotChecked=0, Total=12882 [2024-11-24 00:40:01,374 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 989 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:40:01,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 3001 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 00:40:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-24 00:40:01,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 359. [2024-11-24 00:40:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3519553072625698) internal successors, (484), 358 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2024-11-24 00:40:01,386 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 99 [2024-11-24 00:40:01,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:40:01,387 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2024-11-24 00:40:01,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 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) [2024-11-24 00:40:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2024-11-24 00:40:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-24 00:40:01,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:01,392 INFO L218 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] [2024-11-24 00:40:01,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:40:01,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 00:40:01,596 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:01,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1576973281, now seen corresponding path program 1 times [2024-11-24 00:40:01,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:01,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145197371] [2024-11-24 00:40:01,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:01,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:04,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:04,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145197371] [2024-11-24 00:40:04,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145197371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:04,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015966243] [2024-11-24 00:40:04,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:04,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:04,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:04,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:04,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:40:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:05,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 186 conjuncts are in the unsatisfiable core [2024-11-24 00:40:05,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:08,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:40:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:15,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015966243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:40:15,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:40:15,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 24] total 62 [2024-11-24 00:40:15,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529266364] [2024-11-24 00:40:15,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:40:15,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-24 00:40:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:15,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-24 00:40:15,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=3378, Unknown=0, NotChecked=0, Total=3782 [2024-11-24 00:40:15,351 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 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) [2024-11-24 00:40:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:40:23,345 INFO L93 Difference]: Finished difference Result 1057 states and 1446 transitions. [2024-11-24 00:40:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-24 00:40:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 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 100 [2024-11-24 00:40:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:40:23,349 INFO L225 Difference]: With dead ends: 1057 [2024-11-24 00:40:23,350 INFO L226 Difference]: Without dead ends: 780 [2024-11-24 00:40:23,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1960, Invalid=17780, Unknown=0, NotChecked=0, Total=19740 [2024-11-24 00:40:23,356 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 1493 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:40:23,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 3490 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 00:40:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-11-24 00:40:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 546. [2024-11-24 00:40:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 1.3541284403669724) internal successors, (738), 545 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 738 transitions. [2024-11-24 00:40:23,378 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 738 transitions. Word has length 100 [2024-11-24 00:40:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:40:23,379 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 738 transitions. [2024-11-24 00:40:23,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.596774193548387) internal successors, (285), 62 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) [2024-11-24 00:40:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 738 transitions. [2024-11-24 00:40:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-24 00:40:23,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:23,385 INFO L218 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] [2024-11-24 00:40:23,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:40:23,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:40:23,586 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:23,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2083150738, now seen corresponding path program 1 times [2024-11-24 00:40:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:23,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476342101] [2024-11-24 00:40:23,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:23,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:24,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:24,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476342101] [2024-11-24 00:40:24,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476342101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:24,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398311204] [2024-11-24 00:40:24,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:24,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:24,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:24,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:24,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:40:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:25,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-24 00:40:25,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:26,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:40:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:28,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398311204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:40:28,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:40:28,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 21] total 48 [2024-11-24 00:40:28,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575239061] [2024-11-24 00:40:28,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:40:28,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-24 00:40:28,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:28,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-24 00:40:28,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1978, Unknown=0, NotChecked=0, Total=2256 [2024-11-24 00:40:28,914 INFO L87 Difference]: Start difference. First operand 546 states and 738 transitions. Second operand has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:40:36,334 INFO L93 Difference]: Finished difference Result 2106 states and 2854 transitions. [2024-11-24 00:40:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-24 00:40:36,334 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 states have internal predecessors, (286), 0 states have call successors, (0), 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 [2024-11-24 00:40:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:40:36,341 INFO L225 Difference]: With dead ends: 2106 [2024-11-24 00:40:36,341 INFO L226 Difference]: Without dead ends: 1791 [2024-11-24 00:40:36,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6350 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2459, Invalid=17001, Unknown=0, NotChecked=0, Total=19460 [2024-11-24 00:40:36,346 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 1498 mSDsluCounter, 6914 mSDsCounter, 0 mSdLazyCounter, 4027 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 7189 SdHoareTripleChecker+Invalid, 4045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:40:36,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 7189 Invalid, 4045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4027 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 00:40:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2024-11-24 00:40:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 832. [2024-11-24 00:40:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.3465703971119134) internal successors, (1119), 831 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1119 transitions. [2024-11-24 00:40:36,376 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1119 transitions. Word has length 100 [2024-11-24 00:40:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:40:36,376 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1119 transitions. [2024-11-24 00:40:36,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.958333333333333) internal successors, (286), 48 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:36,377 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1119 transitions. [2024-11-24 00:40:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:40:36,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:36,378 INFO L218 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] [2024-11-24 00:40:36,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:40:36,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:40:36,583 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:36,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1224472682, now seen corresponding path program 1 times [2024-11-24 00:40:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446340746] [2024-11-24 00:40:36,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:36,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446340746] [2024-11-24 00:40:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446340746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225399894] [2024-11-24 00:40:38,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:38,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:38,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:38,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:40:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:39,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-24 00:40:39,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:40,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:40:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225399894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:40:42,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:40:42,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 20] total 50 [2024-11-24 00:40:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655529330] [2024-11-24 00:40:42,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:40:42,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-24 00:40:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:42,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-24 00:40:42,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2246, Unknown=0, NotChecked=0, Total=2450 [2024-11-24 00:40:42,779 INFO L87 Difference]: Start difference. First operand 832 states and 1119 transitions. Second operand has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 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) [2024-11-24 00:40:50,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:40:50,701 INFO L93 Difference]: Finished difference Result 2066 states and 2803 transitions. [2024-11-24 00:40:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-24 00:40:50,702 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 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 [2024-11-24 00:40:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:40:50,707 INFO L225 Difference]: With dead ends: 2066 [2024-11-24 00:40:50,707 INFO L226 Difference]: Without dead ends: 1544 [2024-11-24 00:40:50,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5435 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1769, Invalid=18823, Unknown=0, NotChecked=0, Total=20592 [2024-11-24 00:40:50,710 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 2334 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:40:50,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 4561 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 00:40:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-24 00:40:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1146. [2024-11-24 00:40:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.3362445414847162) internal successors, (1530), 1145 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1530 transitions. [2024-11-24 00:40:50,744 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1530 transitions. Word has length 101 [2024-11-24 00:40:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:40:50,744 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1530 transitions. [2024-11-24 00:40:50,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.66) internal successors, (283), 50 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) [2024-11-24 00:40:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1530 transitions. [2024-11-24 00:40:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:40:50,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:50,747 INFO L218 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, 1] [2024-11-24 00:40:50,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:40:50,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:40:50,947 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:50,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1373936955, now seen corresponding path program 1 times [2024-11-24 00:40:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:50,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603567840] [2024-11-24 00:40:50,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:53,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603567840] [2024-11-24 00:40:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603567840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425013494] [2024-11-24 00:40:53,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:53,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:53,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:53,089 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:53,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:40:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:53,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-24 00:40:53,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:54,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:40:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425013494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:40:56,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:40:56,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 15] total 38 [2024-11-24 00:40:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106042717] [2024-11-24 00:40:56,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:40:56,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-24 00:40:56,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:56,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-24 00:40:56,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 00:40:56,716 INFO L87 Difference]: Start difference. First operand 1146 states and 1530 transitions. Second operand has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:40:58,722 INFO L93 Difference]: Finished difference Result 2131 states and 2862 transitions. [2024-11-24 00:40:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-24 00:40:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 states have internal predecessors, (278), 0 states have call successors, (0), 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 [2024-11-24 00:40:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:40:58,725 INFO L225 Difference]: With dead ends: 2131 [2024-11-24 00:40:58,725 INFO L226 Difference]: Without dead ends: 1247 [2024-11-24 00:40:58,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=585, Invalid=3447, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 00:40:58,727 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 1170 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:40:58,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1852 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:40:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2024-11-24 00:40:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 947. [2024-11-24 00:40:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 1.3456659619450317) internal successors, (1273), 946 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1273 transitions. [2024-11-24 00:40:58,751 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1273 transitions. Word has length 101 [2024-11-24 00:40:58,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:40:58,751 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1273 transitions. [2024-11-24 00:40:58,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.315789473684211) internal successors, (278), 38 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:40:58,751 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1273 transitions. [2024-11-24 00:40:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 00:40:58,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:58,753 INFO L218 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] [2024-11-24 00:40:58,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:40:58,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:58,954 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:58,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:58,955 INFO L85 PathProgramCache]: Analyzing trace with hash 296144241, now seen corresponding path program 1 times [2024-11-24 00:40:58,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:58,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074069586] [2024-11-24 00:40:58,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:58,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074069586] [2024-11-24 00:41:00,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074069586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:41:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695372098] [2024-11-24 00:41:00,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:41:00,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:00,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:41:00,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:41:00,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:41:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:01,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-11-24 00:41:01,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:41:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:03,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:41:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:05,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695372098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:41:05,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:41:05,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 35 [2024-11-24 00:41:05,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131732410] [2024-11-24 00:41:05,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:41:05,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 00:41:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:41:05,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 00:41:05,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:41:05,280 INFO L87 Difference]: Start difference. First operand 947 states and 1273 transitions. Second operand has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:07,514 INFO L93 Difference]: Finished difference Result 1825 states and 2449 transitions. [2024-11-24 00:41:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 00:41:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 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 [2024-11-24 00:41:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:07,517 INFO L225 Difference]: With dead ends: 1825 [2024-11-24 00:41:07,517 INFO L226 Difference]: Without dead ends: 1009 [2024-11-24 00:41:07,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=586, Invalid=3970, Unknown=0, NotChecked=0, Total=4556 [2024-11-24 00:41:07,521 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 553 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:07,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2265 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:41:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2024-11-24 00:41:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 925. [2024-11-24 00:41:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.3474025974025974) internal successors, (1245), 924 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1245 transitions. [2024-11-24 00:41:07,547 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1245 transitions. Word has length 102 [2024-11-24 00:41:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:41:07,548 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1245 transitions. [2024-11-24 00:41:07,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 35 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1245 transitions. [2024-11-24 00:41:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-24 00:41:07,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:41:07,551 INFO L218 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] [2024-11-24 00:41:07,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:41:07,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:07,752 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:41:07,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:41:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1122330496, now seen corresponding path program 2 times [2024-11-24 00:41:07,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:41:07,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118649639] [2024-11-24 00:41:07,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:41:07,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:41:08,899 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:41:08,899 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:41:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:15,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118649639] [2024-11-24 00:41:15,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118649639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:41:15,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355927131] [2024-11-24 00:41:15,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:41:15,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:15,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:41:15,605 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:41:15,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:41:16,527 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:41:16,527 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:41:16,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-24 00:41:16,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:41:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:18,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:41:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:22,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355927131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:41:22,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:41:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 66 [2024-11-24 00:41:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084138572] [2024-11-24 00:41:22,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:41:22,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-24 00:41:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:41:22,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-24 00:41:22,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=3960, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 00:41:22,576 INFO L87 Difference]: Start difference. First operand 925 states and 1245 transitions. Second operand has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 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) [2024-11-24 00:41:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:33,046 INFO L93 Difference]: Finished difference Result 8359 states and 11173 transitions. [2024-11-24 00:41:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-24 00:41:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 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 150 [2024-11-24 00:41:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:33,065 INFO L225 Difference]: With dead ends: 8359 [2024-11-24 00:41:33,065 INFO L226 Difference]: Without dead ends: 7750 [2024-11-24 00:41:33,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13676 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=4230, Invalid=37590, Unknown=0, NotChecked=0, Total=41820 [2024-11-24 00:41:33,072 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 6349 mSDsluCounter, 4535 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6349 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:33,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6349 Valid, 4660 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 00:41:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2024-11-24 00:41:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 2228. [2024-11-24 00:41:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 1.3390211046250562) internal successors, (2982), 2227 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2982 transitions. [2024-11-24 00:41:33,159 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2982 transitions. Word has length 150 [2024-11-24 00:41:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:41:33,159 INFO L471 AbstractCegarLoop]: Abstraction has 2228 states and 2982 transitions. [2024-11-24 00:41:33,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 6.5606060606060606) internal successors, (433), 66 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) [2024-11-24 00:41:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2982 transitions. [2024-11-24 00:41:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-24 00:41:33,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:41:33,165 INFO L218 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] [2024-11-24 00:41:33,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:41:33,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 00:41:33,366 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:41:33,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:41:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash 211462663, now seen corresponding path program 2 times [2024-11-24 00:41:33,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:41:33,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164316692] [2024-11-24 00:41:33,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:41:33,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:41:34,266 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:41:34,266 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:41:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:38,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164316692] [2024-11-24 00:41:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164316692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:41:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664475343] [2024-11-24 00:41:38,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:41:38,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:41:38,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:41:38,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:41:38,909 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:41:38,909 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:41:38,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-24 00:41:38,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:41:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 61 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:41:40,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:41:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664475343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:41:42,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:41:42,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 21] total 59 [2024-11-24 00:41:42,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904481129] [2024-11-24 00:41:42,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:41:42,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-24 00:41:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:41:42,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-24 00:41:42,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=3130, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 00:41:42,363 INFO L87 Difference]: Start difference. First operand 2228 states and 2982 transitions. Second operand has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:45,403 INFO L93 Difference]: Finished difference Result 5026 states and 6699 transitions. [2024-11-24 00:41:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-24 00:41:45,408 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 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 [2024-11-24 00:41:45,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:45,417 INFO L225 Difference]: With dead ends: 5026 [2024-11-24 00:41:45,417 INFO L226 Difference]: Without dead ends: 3078 [2024-11-24 00:41:45,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 266 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3459 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1370, Invalid=9972, Unknown=0, NotChecked=0, Total=11342 [2024-11-24 00:41:45,423 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 1605 mSDsluCounter, 5511 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:45,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 5702 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:41:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2024-11-24 00:41:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2524. [2024-11-24 00:41:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 1.3285770907649623) internal successors, (3352), 2523 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3352 transitions. [2024-11-24 00:41:45,481 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3352 transitions. Word has length 151 [2024-11-24 00:41:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:41:45,482 INFO L471 AbstractCegarLoop]: Abstraction has 2524 states and 3352 transitions. [2024-11-24 00:41:45,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.898305084745763) internal successors, (407), 59 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3352 transitions. [2024-11-24 00:41:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-24 00:41:45,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:41:45,488 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:41:45,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:41:45,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:45,688 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:41:45,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:41:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash -660574051, now seen corresponding path program 1 times [2024-11-24 00:41:45,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:41:45,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040318022] [2024-11-24 00:41:45,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:41:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:41:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 00:41:46,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:46,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040318022] [2024-11-24 00:41:46,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040318022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:41:46,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:41:46,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:41:46,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013882256] [2024-11-24 00:41:46,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:41:46,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:41:46,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:41:46,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:41:46,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:41:46,866 INFO L87 Difference]: Start difference. First operand 2524 states and 3352 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:47,008 INFO L93 Difference]: Finished difference Result 3530 states and 4707 transitions. [2024-11-24 00:41:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:41:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 [2024-11-24 00:41:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:47,015 INFO L225 Difference]: With dead ends: 3530 [2024-11-24 00:41:47,015 INFO L226 Difference]: Without dead ends: 2504 [2024-11-24 00:41:47,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:41:47,017 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 432 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:47,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 698 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:41:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2024-11-24 00:41:47,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2504. [2024-11-24 00:41:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2503 states have (on average 1.3284059129045145) internal successors, (3325), 2503 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3325 transitions. [2024-11-24 00:41:47,067 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3325 transitions. Word has length 152 [2024-11-24 00:41:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:41:47,067 INFO L471 AbstractCegarLoop]: Abstraction has 2504 states and 3325 transitions. [2024-11-24 00:41:47,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3325 transitions. [2024-11-24 00:41:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-24 00:41:47,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:41:47,073 INFO L218 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] [2024-11-24 00:41:47,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 00:41:47,073 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:41:47,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:41:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash -460941491, now seen corresponding path program 1 times [2024-11-24 00:41:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:41:47,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567766351] [2024-11-24 00:41:47,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:41:47,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:41:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 61 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:41:48,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:48,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567766351] [2024-11-24 00:41:48,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567766351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:41:48,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411296337] [2024-11-24 00:41:48,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:41:48,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:48,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:41:48,219 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:41:48,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:41:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:49,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-24 00:41:49,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:41:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:50,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:41:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:41:52,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411296337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:41:52,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:41:52,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 15] total 41 [2024-11-24 00:41:52,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730103865] [2024-11-24 00:41:52,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:41:52,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-24 00:41:52,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:41:52,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-24 00:41:52,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1465, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 00:41:52,672 INFO L87 Difference]: Start difference. First operand 2504 states and 3325 transitions. Second operand has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:55,730 INFO L93 Difference]: Finished difference Result 5215 states and 6982 transitions. [2024-11-24 00:41:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-24 00:41:55,730 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 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 [2024-11-24 00:41:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:55,740 INFO L225 Difference]: With dead ends: 5215 [2024-11-24 00:41:55,740 INFO L226 Difference]: Without dead ends: 3721 [2024-11-24 00:41:55,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=743, Invalid=5419, Unknown=0, NotChecked=0, Total=6162 [2024-11-24 00:41:55,743 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 865 mSDsluCounter, 5483 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:55,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 5724 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 00:41:55,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2024-11-24 00:41:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 2737. [2024-11-24 00:41:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2736 states have (on average 1.3362573099415205) internal successors, (3656), 2736 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3656 transitions. [2024-11-24 00:41:55,802 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3656 transitions. Word has length 152 [2024-11-24 00:41:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:41:55,802 INFO L471 AbstractCegarLoop]: Abstraction has 2737 states and 3656 transitions. [2024-11-24 00:41:55,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.609756097560975) internal successors, (435), 41 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:41:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3656 transitions. [2024-11-24 00:41:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-24 00:41:55,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:41:55,809 INFO L218 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] [2024-11-24 00:41:55,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:41:56,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:41:56,010 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:41:56,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:41:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1605008847, now seen corresponding path program 2 times [2024-11-24 00:41:56,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:41:56,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690660409] [2024-11-24 00:41:56,010 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:41:56,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:41:56,889 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:41:56,890 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:41:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690660409] [2024-11-24 00:41:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690660409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:41:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894209648] [2024-11-24 00:41:59,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:41:59,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:59,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:41:59,969 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:41:59,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:42:01,005 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:42:01,005 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:42:01,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-24 00:42:01,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:03,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:42:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:07,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894209648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:42:07,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:42:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 67 [2024-11-24 00:42:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360965368] [2024-11-24 00:42:07,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:42:07,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-24 00:42:07,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:07,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-24 00:42:07,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=4100, Unknown=0, NotChecked=0, Total=4422 [2024-11-24 00:42:07,071 INFO L87 Difference]: Start difference. First operand 2737 states and 3656 transitions. Second operand has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:42:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:22,082 INFO L93 Difference]: Finished difference Result 7580 states and 10023 transitions. [2024-11-24 00:42:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2024-11-24 00:42:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 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 [2024-11-24 00:42:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:22,094 INFO L225 Difference]: With dead ends: 7580 [2024-11-24 00:42:22,095 INFO L226 Difference]: Without dead ends: 5843 [2024-11-24 00:42:22,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23753 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=4385, Invalid=66105, Unknown=0, NotChecked=0, Total=70490 [2024-11-24 00:42:22,100 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 2966 mSDsluCounter, 10365 mSDsCounter, 0 mSdLazyCounter, 9136 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 10659 SdHoareTripleChecker+Invalid, 9175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 9136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:22,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 10659 Invalid, 9175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 9136 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-24 00:42:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2024-11-24 00:42:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 3406. [2024-11-24 00:42:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 1.3309838472834068) internal successors, (4532), 3405 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:42:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 4532 transitions. [2024-11-24 00:42:22,170 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 4532 transitions. Word has length 152 [2024-11-24 00:42:22,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:22,170 INFO L471 AbstractCegarLoop]: Abstraction has 3406 states and 4532 transitions. [2024-11-24 00:42:22,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 6.701492537313433) internal successors, (449), 67 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:42:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 4532 transitions. [2024-11-24 00:42:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:42:22,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:22,178 INFO L218 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] [2024-11-24 00:42:22,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 00:42:22,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 00:42:22,379 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:22,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:22,379 INFO L85 PathProgramCache]: Analyzing trace with hash 996168025, now seen corresponding path program 2 times [2024-11-24 00:42:22,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:22,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405822420] [2024-11-24 00:42:22,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:42:22,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:23,186 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:42:23,186 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:42:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:25,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405822420] [2024-11-24 00:42:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405822420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385232472] [2024-11-24 00:42:25,954 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:42:25,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:25,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:25,956 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:25,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:42:26,789 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:42:26,789 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:42:26,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-24 00:42:26,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:28,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:42:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:33,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385232472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:42:33,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:42:33,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 33] total 74 [2024-11-24 00:42:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248027279] [2024-11-24 00:42:33,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:42:33,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-24 00:42:33,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:33,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-24 00:42:33,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=4973, Unknown=0, NotChecked=0, Total=5402 [2024-11-24 00:42:33,421 INFO L87 Difference]: Start difference. First operand 3406 states and 4532 transitions. Second operand has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:42:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:38,567 INFO L93 Difference]: Finished difference Result 8571 states and 11373 transitions. [2024-11-24 00:42:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-24 00:42:38,568 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 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 [2024-11-24 00:42:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:38,577 INFO L225 Difference]: With dead ends: 8571 [2024-11-24 00:42:38,577 INFO L226 Difference]: Without dead ends: 5464 [2024-11-24 00:42:38,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 251 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4495 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1372, Invalid=13880, Unknown=0, NotChecked=0, Total=15252 [2024-11-24 00:42:38,581 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 2267 mSDsluCounter, 4750 mSDsCounter, 0 mSdLazyCounter, 3848 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 4863 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:38,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 4863 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3848 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 00:42:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2024-11-24 00:42:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 4131. [2024-11-24 00:42:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4131 states, 4130 states have (on average 1.3014527845036319) internal successors, (5375), 4130 states have internal predecessors, (5375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:42:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 5375 transitions. [2024-11-24 00:42:38,641 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 5375 transitions. Word has length 153 [2024-11-24 00:42:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:38,642 INFO L471 AbstractCegarLoop]: Abstraction has 4131 states and 5375 transitions. [2024-11-24 00:42:38,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.797297297297297) internal successors, (429), 74 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:42:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 5375 transitions. [2024-11-24 00:42:38,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:42:38,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:38,647 INFO L218 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, 1] [2024-11-24 00:42:38,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:42:38,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 00:42:38,848 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:38,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash 836606794, now seen corresponding path program 1 times [2024-11-24 00:42:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:38,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90516175] [2024-11-24 00:42:38,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:38,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 55 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:43,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:43,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90516175] [2024-11-24 00:42:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90516175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:42:43,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477065468] [2024-11-24 00:42:43,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:43,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:42:43,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:43,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:42:43,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:42:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:44,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-24 00:42:44,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:46,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:42:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:51,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477065468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:42:51,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:42:51,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 26] total 69 [2024-11-24 00:42:51,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349472137] [2024-11-24 00:42:51,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:42:51,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-24 00:42:51,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:51,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-24 00:42:51,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4342, Unknown=0, NotChecked=0, Total=4692 [2024-11-24 00:42:51,296 INFO L87 Difference]: Start difference. First operand 4131 states and 5375 transitions. Second operand has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:07,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:07,927 INFO L93 Difference]: Finished difference Result 16411 states and 21536 transitions. [2024-11-24 00:43:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-24 00:43:07,928 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-11-24 00:43:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:07,954 INFO L225 Difference]: With dead ends: 16411 [2024-11-24 00:43:07,954 INFO L226 Difference]: Without dead ends: 12345 [2024-11-24 00:43:07,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18169 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=4590, Invalid=48080, Unknown=0, NotChecked=0, Total=52670 [2024-11-24 00:43:07,964 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 3691 mSDsluCounter, 8115 mSDsCounter, 0 mSdLazyCounter, 6810 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 8263 SdHoareTripleChecker+Invalid, 6881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 6810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:07,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3691 Valid, 8263 Invalid, 6881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 6810 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-24 00:43:07,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12345 states. [2024-11-24 00:43:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12345 to 6847. [2024-11-24 00:43:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6847 states, 6846 states have (on average 1.3236926672509495) internal successors, (9062), 6846 states have internal predecessors, (9062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6847 states to 6847 states and 9062 transitions. [2024-11-24 00:43:08,128 INFO L78 Accepts]: Start accepts. Automaton has 6847 states and 9062 transitions. Word has length 153 [2024-11-24 00:43:08,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:08,130 INFO L471 AbstractCegarLoop]: Abstraction has 6847 states and 9062 transitions. [2024-11-24 00:43:08,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.3478260869565215) internal successors, (438), 69 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6847 states and 9062 transitions. [2024-11-24 00:43:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:43:08,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:08,136 INFO L218 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, 1, 1] [2024-11-24 00:43:08,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:43:08,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:43:08,340 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:08,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2051927795, now seen corresponding path program 1 times [2024-11-24 00:43:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140483857] [2024-11-24 00:43:08,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:43:10,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:10,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140483857] [2024-11-24 00:43:10,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140483857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:43:10,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681940092] [2024-11-24 00:43:10,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:10,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:10,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:10,778 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:43:10,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:43:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:12,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-24 00:43:12,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:43:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:43:14,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:43:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 10 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:43:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681940092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:43:16,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:43:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25, 19] total 56 [2024-11-24 00:43:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524453977] [2024-11-24 00:43:16,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:43:16,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-24 00:43:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:16,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-24 00:43:16,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=2719, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 00:43:16,910 INFO L87 Difference]: Start difference. First operand 6847 states and 9062 transitions. Second operand has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:21,477 INFO L93 Difference]: Finished difference Result 13886 states and 18441 transitions. [2024-11-24 00:43:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-24 00:43:21,478 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 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 [2024-11-24 00:43:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:21,491 INFO L225 Difference]: With dead ends: 13886 [2024-11-24 00:43:21,492 INFO L226 Difference]: Without dead ends: 8610 [2024-11-24 00:43:21,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5182 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1772, Invalid=13728, Unknown=0, NotChecked=0, Total=15500 [2024-11-24 00:43:21,500 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 2408 mSDsluCounter, 6439 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 6725 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:21,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2408 Valid, 6725 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3061 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 00:43:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2024-11-24 00:43:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 5468. [2024-11-24 00:43:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5468 states, 5467 states have (on average 1.3305286263032743) internal successors, (7274), 5467 states have internal predecessors, (7274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5468 states to 5468 states and 7274 transitions. [2024-11-24 00:43:21,622 INFO L78 Accepts]: Start accepts. Automaton has 5468 states and 7274 transitions. Word has length 153 [2024-11-24 00:43:21,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:21,623 INFO L471 AbstractCegarLoop]: Abstraction has 5468 states and 7274 transitions. [2024-11-24 00:43:21,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.910714285714286) internal successors, (443), 56 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:21,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5468 states and 7274 transitions. [2024-11-24 00:43:21,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-24 00:43:21,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:21,625 INFO L218 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, 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] [2024-11-24 00:43:21,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 00:43:21,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:43:21,826 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:21,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash 201357518, now seen corresponding path program 1 times [2024-11-24 00:43:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:21,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659062065] [2024-11-24 00:43:21,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:21,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:43:26,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:26,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659062065] [2024-11-24 00:43:26,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659062065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:43:26,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517274228] [2024-11-24 00:43:26,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:26,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:26,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:26,592 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:43:26,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:43:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:27,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-11-24 00:43:27,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:43:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 00:43:29,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:43:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:43:32,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517274228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:43:32,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:43:32,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 26] total 64 [2024-11-24 00:43:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086698535] [2024-11-24 00:43:32,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:43:32,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-24 00:43:32,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:32,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-24 00:43:32,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=3682, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 00:43:32,878 INFO L87 Difference]: Start difference. First operand 5468 states and 7274 transitions. Second operand has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:43,184 INFO L93 Difference]: Finished difference Result 20353 states and 27329 transitions. [2024-11-24 00:43:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-24 00:43:43,184 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2024-11-24 00:43:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:43,209 INFO L225 Difference]: With dead ends: 20353 [2024-11-24 00:43:43,209 INFO L226 Difference]: Without dead ends: 16176 [2024-11-24 00:43:43,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11332 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=3091, Invalid=31319, Unknown=0, NotChecked=0, Total=34410 [2024-11-24 00:43:43,215 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 3842 mSDsluCounter, 5987 mSDsCounter, 0 mSdLazyCounter, 4723 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3842 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 4786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:43,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3842 Valid, 6177 Invalid, 4786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4723 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 00:43:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16176 states. [2024-11-24 00:43:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16176 to 7485. [2024-11-24 00:43:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7485 states, 7484 states have (on average 1.3384553714591128) internal successors, (10017), 7484 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 10017 transitions. [2024-11-24 00:43:43,371 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 10017 transitions. Word has length 156 [2024-11-24 00:43:43,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:43,371 INFO L471 AbstractCegarLoop]: Abstraction has 7485 states and 10017 transitions. [2024-11-24 00:43:43,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.625) internal successors, (424), 64 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:43,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 10017 transitions. [2024-11-24 00:43:43,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-24 00:43:43,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:43,377 INFO L218 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, 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, 1, 1] [2024-11-24 00:43:43,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 00:43:43,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:43:43,577 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:43,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1469699451, now seen corresponding path program 2 times [2024-11-24 00:43:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:43,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416936478] [2024-11-24 00:43:43,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:43:43,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:44,453 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:43:44,453 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:43:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 00:43:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416936478] [2024-11-24 00:43:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416936478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:43:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550104656] [2024-11-24 00:43:45,112 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:43:45,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:45,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:45,114 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:43:45,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:43:46,163 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:43:46,163 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:43:46,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:43:46,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:43:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 00:43:46,413 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:43:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 205 proven. 7 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 00:43:46,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550104656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:43:46,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:43:46,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2024-11-24 00:43:46,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422908490] [2024-11-24 00:43:46,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:43:46,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 00:43:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:46,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 00:43:46,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:43:46,845 INFO L87 Difference]: Start difference. First operand 7485 states and 10017 transitions. Second operand has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 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) [2024-11-24 00:43:47,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:47,305 INFO L93 Difference]: Finished difference Result 25172 states and 33644 transitions. [2024-11-24 00:43:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:43:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 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 203 [2024-11-24 00:43:47,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:47,325 INFO L225 Difference]: With dead ends: 25172 [2024-11-24 00:43:47,325 INFO L226 Difference]: Without dead ends: 18246 [2024-11-24 00:43:47,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2024-11-24 00:43:47,335 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 1080 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:47,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1961 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:43:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18246 states. [2024-11-24 00:43:47,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18246 to 13925. [2024-11-24 00:43:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13925 states, 13924 states have (on average 1.3316575696638897) internal successors, (18542), 13924 states have internal predecessors, (18542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13925 states to 13925 states and 18542 transitions. [2024-11-24 00:43:47,585 INFO L78 Accepts]: Start accepts. Automaton has 13925 states and 18542 transitions. Word has length 203 [2024-11-24 00:43:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:47,586 INFO L471 AbstractCegarLoop]: Abstraction has 13925 states and 18542 transitions. [2024-11-24 00:43:47,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.25) internal successors, (405), 20 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) [2024-11-24 00:43:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 13925 states and 18542 transitions. [2024-11-24 00:43:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-24 00:43:47,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:47,595 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:47,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 00:43:47,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:47,796 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:47,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash -845817580, now seen corresponding path program 1 times [2024-11-24 00:43:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:47,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595925935] [2024-11-24 00:43:47,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:47,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-24 00:43:54,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595925935] [2024-11-24 00:43:54,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595925935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:43:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793554158] [2024-11-24 00:43:54,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:54,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:54,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:54,340 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:43:54,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:43:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:56,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 204 conjuncts are in the unsatisfiable core [2024-11-24 00:43:56,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:00,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:44:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 21 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:44:07,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793554158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:44:07,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:44:07,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 84 [2024-11-24 00:44:07,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571957751] [2024-11-24 00:44:07,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:44:07,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-24 00:44:07,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:07,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-24 00:44:07,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=6587, Unknown=0, NotChecked=0, Total=6972 [2024-11-24 00:44:07,432 INFO L87 Difference]: Start difference. First operand 13925 states and 18542 transitions. Second operand has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:44:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:50,767 INFO L93 Difference]: Finished difference Result 66642 states and 88922 transitions. [2024-11-24 00:44:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2024-11-24 00:44:50,768 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 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 [2024-11-24 00:44:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:50,805 INFO L225 Difference]: With dead ends: 66642 [2024-11-24 00:44:50,805 INFO L226 Difference]: Without dead ends: 52344 [2024-11-24 00:44:50,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81488 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=10738, Invalid=195832, Unknown=0, NotChecked=0, Total=206570 [2024-11-24 00:44:50,822 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 3702 mSDsluCounter, 14151 mSDsCounter, 0 mSdLazyCounter, 14871 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3702 SdHoareTripleChecker+Valid, 14431 SdHoareTripleChecker+Invalid, 14954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 14871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:50,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3702 Valid, 14431 Invalid, 14954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 14871 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-24 00:44:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52344 states. [2024-11-24 00:44:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52344 to 27388. [2024-11-24 00:44:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27388 states, 27387 states have (on average 1.3369116734216964) internal successors, (36614), 27387 states have internal predecessors, (36614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:44:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27388 states to 27388 states and 36614 transitions. [2024-11-24 00:44:51,344 INFO L78 Accepts]: Start accepts. Automaton has 27388 states and 36614 transitions. Word has length 204 [2024-11-24 00:44:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:51,345 INFO L471 AbstractCegarLoop]: Abstraction has 27388 states and 36614 transitions. [2024-11-24 00:44:51,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 6.607142857142857) internal successors, (555), 84 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:44:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 27388 states and 36614 transitions. [2024-11-24 00:44:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-24 00:44:51,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:51,364 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:51,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 00:44:51,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:51,565 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:51,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1262314959, now seen corresponding path program 1 times [2024-11-24 00:44:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:51,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95005863] [2024-11-24 00:44:51,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:51,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-24 00:44:54,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:54,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95005863] [2024-11-24 00:44:54,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95005863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:54,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:44:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841397793] [2024-11-24 00:44:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:54,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:44:54,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:54,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:44:54,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:44:54,596 INFO L87 Difference]: Start difference. First operand 27388 states and 36614 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:44:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:54,871 INFO L93 Difference]: Finished difference Result 49926 states and 67155 transitions. [2024-11-24 00:44:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:44:54,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2024-11-24 00:44:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:54,897 INFO L225 Difference]: With dead ends: 49926 [2024-11-24 00:44:54,897 INFO L226 Difference]: Without dead ends: 29118 [2024-11-24 00:44:54,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:44:54,913 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 8 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:54,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1437 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:44:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29118 states. [2024-11-24 00:44:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29118 to 28552. [2024-11-24 00:44:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28552 states, 28551 states have (on average 1.3324226822177858) internal successors, (38042), 28551 states have internal predecessors, (38042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:44:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28552 states to 28552 states and 38042 transitions. [2024-11-24 00:44:55,343 INFO L78 Accepts]: Start accepts. Automaton has 28552 states and 38042 transitions. Word has length 204 [2024-11-24 00:44:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:55,343 INFO L471 AbstractCegarLoop]: Abstraction has 28552 states and 38042 transitions. [2024-11-24 00:44:55,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:44:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand 28552 states and 38042 transitions. [2024-11-24 00:44:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-24 00:44:55,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:55,356 INFO L218 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, 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] [2024-11-24 00:44:55,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-24 00:44:55,357 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:55,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:55,357 INFO L85 PathProgramCache]: Analyzing trace with hash -322449372, now seen corresponding path program 1 times [2024-11-24 00:44:55,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:55,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697460981] [2024-11-24 00:44:55,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:55,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:44:56,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:56,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697460981] [2024-11-24 00:44:56,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697460981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:56,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773756682] [2024-11-24 00:44:56,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:56,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:56,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:56,922 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:44:56,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 00:44:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:58,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-24 00:44:58,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 187 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:44:58,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:45:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 109 proven. 84 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:45:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773756682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:45:01,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:45:01,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 16] total 34 [2024-11-24 00:45:01,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780451250] [2024-11-24 00:45:01,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:45:01,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 00:45:01,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:01,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 00:45:01,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:45:01,149 INFO L87 Difference]: Start difference. First operand 28552 states and 38042 transitions. Second operand has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:45:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:03,162 INFO L93 Difference]: Finished difference Result 48324 states and 64430 transitions. [2024-11-24 00:45:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 00:45:03,163 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 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 [2024-11-24 00:45:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:03,180 INFO L225 Difference]: With dead ends: 48324 [2024-11-24 00:45:03,180 INFO L226 Difference]: Without dead ends: 19874 [2024-11-24 00:45:03,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=2078, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 00:45:03,194 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 601 mSDsluCounter, 3312 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:03,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 3474 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 00:45:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19874 states. [2024-11-24 00:45:03,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19874 to 19669. [2024-11-24 00:45:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19669 states, 19668 states have (on average 1.3257575757575757) internal successors, (26075), 19668 states have internal predecessors, (26075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:45:03,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19669 states to 19669 states and 26075 transitions. [2024-11-24 00:45:03,485 INFO L78 Accepts]: Start accepts. Automaton has 19669 states and 26075 transitions. Word has length 204 [2024-11-24 00:45:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:03,485 INFO L471 AbstractCegarLoop]: Abstraction has 19669 states and 26075 transitions. [2024-11-24 00:45:03,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 12.117647058823529) internal successors, (412), 34 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:45:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 19669 states and 26075 transitions. [2024-11-24 00:45:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-24 00:45:03,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:03,494 INFO L218 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, 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] [2024-11-24 00:45:03,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 00:45:03,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:03,694 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:03,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -653487970, now seen corresponding path program 1 times [2024-11-24 00:45:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415102487] [2024-11-24 00:45:03,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:03,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 96 proven. 97 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-24 00:45:05,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415102487] [2024-11-24 00:45:05,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415102487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411545986] [2024-11-24 00:45:05,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:05,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:05,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:05,250 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:05,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 00:45:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:07,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 243 conjuncts are in the unsatisfiable core [2024-11-24 00:45:07,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 64 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:11,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:45:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 15 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:20,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411545986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:45:20,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:45:20,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 36, 38] total 78 [2024-11-24 00:45:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406464961] [2024-11-24 00:45:20,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:45:20,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-24 00:45:20,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:20,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-24 00:45:20,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=5586, Unknown=0, NotChecked=0, Total=6006 [2024-11-24 00:45:20,358 INFO L87 Difference]: Start difference. First operand 19669 states and 26075 transitions. Second operand has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:45:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:58,738 INFO L93 Difference]: Finished difference Result 98024 states and 130526 transitions. [2024-11-24 00:45:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-11-24 00:45:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 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 [2024-11-24 00:45:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:58,800 INFO L225 Difference]: With dead ends: 98024 [2024-11-24 00:45:58,800 INFO L226 Difference]: Without dead ends: 78457 [2024-11-24 00:45:58,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30038 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=6836, Invalid=83464, Unknown=0, NotChecked=0, Total=90300 [2024-11-24 00:45:58,817 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 5268 mSDsluCounter, 12632 mSDsCounter, 0 mSdLazyCounter, 9613 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5268 SdHoareTripleChecker+Valid, 12923 SdHoareTripleChecker+Invalid, 9756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 9613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:58,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5268 Valid, 12923 Invalid, 9756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 9613 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-24 00:45:58,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78457 states. [2024-11-24 00:45:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78457 to 43251. [2024-11-24 00:45:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43251 states, 43250 states have (on average 1.323121387283237) internal successors, (57225), 43250 states have internal predecessors, (57225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:45:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43251 states to 43251 states and 57225 transitions. [2024-11-24 00:45:59,538 INFO L78 Accepts]: Start accepts. Automaton has 43251 states and 57225 transitions. Word has length 204 [2024-11-24 00:45:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:59,538 INFO L471 AbstractCegarLoop]: Abstraction has 43251 states and 57225 transitions. [2024-11-24 00:45:59,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 7.012820512820513) internal successors, (547), 78 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:45:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 43251 states and 57225 transitions. [2024-11-24 00:45:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 00:45:59,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:59,551 INFO L218 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] [2024-11-24 00:45:59,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-24 00:45:59,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:59,752 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:59,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1437863642, now seen corresponding path program 1 times [2024-11-24 00:45:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146617796] [2024-11-24 00:45:59,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:59,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-24 00:46:07,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:07,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146617796] [2024-11-24 00:46:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146617796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:46:07,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331537958] [2024-11-24 00:46:07,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:07,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:46:07,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:46:07,127 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:46:07,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 00:46:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:09,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-11-24 00:46:09,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:46:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 98 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 00:46:13,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:46:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 51 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:20,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331537958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:46:20,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:46:20,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 26] total 78 [2024-11-24 00:46:20,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802557695] [2024-11-24 00:46:20,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:46:20,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-24 00:46:20,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:46:20,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-24 00:46:20,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=5711, Unknown=0, NotChecked=0, Total=6006 [2024-11-24 00:46:20,639 INFO L87 Difference]: Start difference. First operand 43251 states and 57225 transitions. Second operand has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:46:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:52,566 INFO L93 Difference]: Finished difference Result 137922 states and 182149 transitions. [2024-11-24 00:46:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-11-24 00:46:52,567 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 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 [2024-11-24 00:46:52,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:52,689 INFO L225 Difference]: With dead ends: 137922 [2024-11-24 00:46:52,689 INFO L226 Difference]: Without dead ends: 97153 [2024-11-24 00:46:52,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32275 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=5538, Invalid=84762, Unknown=0, NotChecked=0, Total=90300 [2024-11-24 00:46:52,738 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 3601 mSDsluCounter, 16011 mSDsCounter, 0 mSdLazyCounter, 11496 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 16308 SdHoareTripleChecker+Invalid, 11543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 11496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:52,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3601 Valid, 16308 Invalid, 11543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 11496 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-24 00:46:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97153 states. [2024-11-24 00:46:54,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97153 to 62068. [2024-11-24 00:46:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62068 states, 62067 states have (on average 1.3125976767042067) internal successors, (81469), 62067 states have internal predecessors, (81469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:46:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62068 states to 62068 states and 81469 transitions. [2024-11-24 00:46:54,204 INFO L78 Accepts]: Start accepts. Automaton has 62068 states and 81469 transitions. Word has length 206 [2024-11-24 00:46:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:46:54,205 INFO L471 AbstractCegarLoop]: Abstraction has 62068 states and 81469 transitions. [2024-11-24 00:46:54,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 7.141025641025641) internal successors, (557), 78 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:46:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 62068 states and 81469 transitions. [2024-11-24 00:46:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 00:46:54,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:46:54,221 INFO L218 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, 1] [2024-11-24 00:46:54,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 00:46:54,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:46:54,422 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:46:54,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:46:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1388882565, now seen corresponding path program 1 times [2024-11-24 00:46:54,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:46:54,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983184764] [2024-11-24 00:46:54,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:54,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 207 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 00:46:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983184764] [2024-11-24 00:46:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983184764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:46:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764063890] [2024-11-24 00:46:56,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:56,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:46:56,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:46:56,219 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:46:56,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 00:46:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:59,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 171 conjuncts are in the unsatisfiable core [2024-11-24 00:46:59,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:47:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:03,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:47:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 68 proven. 173 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:47:08,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764063890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:47:08,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:47:08,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 29, 24] total 56 [2024-11-24 00:47:08,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341446413] [2024-11-24 00:47:08,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:47:08,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-24 00:47:08,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:08,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-24 00:47:08,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2776, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 00:47:08,988 INFO L87 Difference]: Start difference. First operand 62068 states and 81469 transitions. Second operand has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:47:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:47:17,564 INFO L93 Difference]: Finished difference Result 138697 states and 181478 transitions. [2024-11-24 00:47:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-24 00:47:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 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 [2024-11-24 00:47:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:47:17,633 INFO L225 Difference]: With dead ends: 138697 [2024-11-24 00:47:17,633 INFO L226 Difference]: Without dead ends: 78010 [2024-11-24 00:47:17,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4581 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2078, Invalid=16012, Unknown=0, NotChecked=0, Total=18090 [2024-11-24 00:47:17,668 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 2690 mSDsluCounter, 6189 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 6419 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:47:17,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 6419 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 00:47:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78010 states. [2024-11-24 00:47:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78010 to 62443. [2024-11-24 00:47:19,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62443 states, 62442 states have (on average 1.3103359918003907) internal successors, (81820), 62442 states have internal predecessors, (81820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:47:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62443 states to 62443 states and 81820 transitions. [2024-11-24 00:47:19,300 INFO L78 Accepts]: Start accepts. Automaton has 62443 states and 81820 transitions. Word has length 206 [2024-11-24 00:47:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:19,301 INFO L471 AbstractCegarLoop]: Abstraction has 62443 states and 81820 transitions. [2024-11-24 00:47:19,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 10.142857142857142) internal successors, (568), 56 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:47:19,301 INFO L276 IsEmpty]: Start isEmpty. Operand 62443 states and 81820 transitions. [2024-11-24 00:47:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-24 00:47:19,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:19,317 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:47:19,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 00:47:19,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-24 00:47:19,518 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:19,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1760157407, now seen corresponding path program 1 times [2024-11-24 00:47:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:19,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472315073] [2024-11-24 00:47:19,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:47:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 115 proven. 78 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:47:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:47:29,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472315073] [2024-11-24 00:47:29,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472315073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:47:29,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65412223] [2024-11-24 00:47:29,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:29,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:47:29,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:47:29,581 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:47:29,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 00:47:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:32,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 1673 conjuncts, 329 conjuncts are in the unsatisfiable core [2024-11-24 00:47:32,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:47:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 36 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:40,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:47:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:54,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65412223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:47:54,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:47:54,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 54, 39] total 110 [2024-11-24 00:47:54,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758193513] [2024-11-24 00:47:54,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:47:54,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-11-24 00:47:54,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:54,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-11-24 00:47:54,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=11210, Unknown=0, NotChecked=0, Total=11990 [2024-11-24 00:47:54,049 INFO L87 Difference]: Start difference. First operand 62443 states and 81820 transitions. Second operand has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:49:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:49:46,600 INFO L93 Difference]: Finished difference Result 202680 states and 263406 transitions. [2024-11-24 00:49:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 567 states. [2024-11-24 00:49:46,602 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 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 [2024-11-24 00:49:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:49:47,286 INFO L225 Difference]: With dead ends: 202680 [2024-11-24 00:49:47,287 INFO L226 Difference]: Without dead ends: 142783 [2024-11-24 00:49:47,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 672 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195990 ImplicationChecksByTransitivity, 104.9s TimeCoverageRelationStatistics Valid=25980, Invalid=427622, Unknown=0, NotChecked=0, Total=453602 [2024-11-24 00:49:47,432 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 12205 mSDsluCounter, 16099 mSDsCounter, 0 mSdLazyCounter, 10451 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12205 SdHoareTripleChecker+Valid, 16377 SdHoareTripleChecker+Invalid, 10754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 10451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:49:47,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12205 Valid, 16377 Invalid, 10754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [303 Valid, 10451 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2024-11-24 00:49:47,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142783 states. [2024-11-24 00:49:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142783 to 67881. [2024-11-24 00:49:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67881 states, 67880 states have (on average 1.3095904537418974) internal successors, (88895), 67880 states have internal predecessors, (88895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:49:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67881 states to 67881 states and 88895 transitions. [2024-11-24 00:49:51,382 INFO L78 Accepts]: Start accepts. Automaton has 67881 states and 88895 transitions. Word has length 206 [2024-11-24 00:49:51,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:49:51,386 INFO L471 AbstractCegarLoop]: Abstraction has 67881 states and 88895 transitions. [2024-11-24 00:49:51,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 4.990909090909091) internal successors, (549), 110 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:49:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 67881 states and 88895 transitions. [2024-11-24 00:49:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-24 00:49:51,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:49:51,487 INFO L218 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, 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, 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, 1, 1] [2024-11-24 00:49:51,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 00:49:51,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 00:49:51,694 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:49:51,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:49:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1835943249, now seen corresponding path program 1 times [2024-11-24 00:49:51,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:49:51,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162112012] [2024-11-24 00:49:51,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:51,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:49:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:16,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162112012] [2024-11-24 00:50:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162112012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:50:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652701868] [2024-11-24 00:50:16,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:16,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:50:16,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:50:16,630 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:50:16,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 00:50:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:19,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-11-24 00:50:19,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:50:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 63 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:24,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:50:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 15 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:50:32,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652701868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:50:32,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:50:32,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31, 32] total 88 [2024-11-24 00:50:32,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564115408] [2024-11-24 00:50:32,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:50:32,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-24 00:50:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:32,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-24 00:50:32,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=7067, Unknown=0, NotChecked=0, Total=7656 [2024-11-24 00:50:32,613 INFO L87 Difference]: Start difference. First operand 67881 states and 88895 transitions. Second operand has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:53,654 INFO L93 Difference]: Finished difference Result 128684 states and 169043 transitions. [2024-11-24 00:50:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-11-24 00:50:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 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 207 [2024-11-24 00:50:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:53,934 INFO L225 Difference]: With dead ends: 128684 [2024-11-24 00:50:53,935 INFO L226 Difference]: Without dead ends: 71115 [2024-11-24 00:50:54,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 357 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18622 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=4477, Invalid=51455, Unknown=0, NotChecked=0, Total=55932 [2024-11-24 00:50:54,007 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 2401 mSDsluCounter, 7048 mSDsCounter, 0 mSdLazyCounter, 9126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 7221 SdHoareTripleChecker+Invalid, 9176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 9126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:54,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 7221 Invalid, 9176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 9126 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-24 00:50:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71115 states. [2024-11-24 00:50:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71115 to 66842. [2024-11-24 00:50:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66842 states, 66841 states have (on average 1.3093610209302673) internal successors, (87519), 66841 states have internal predecessors, (87519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66842 states to 66842 states and 87519 transitions. [2024-11-24 00:50:56,124 INFO L78 Accepts]: Start accepts. Automaton has 66842 states and 87519 transitions. Word has length 207 [2024-11-24 00:50:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:56,125 INFO L471 AbstractCegarLoop]: Abstraction has 66842 states and 87519 transitions. [2024-11-24 00:50:56,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 6.863636363636363) internal successors, (604), 88 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:50:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 66842 states and 87519 transitions. [2024-11-24 00:50:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-24 00:50:56,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:56,145 INFO L218 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, 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] [2024-11-24 00:50:56,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 00:50:56,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 00:50:56,350 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:56,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:56,352 INFO L85 PathProgramCache]: Analyzing trace with hash 390427642, now seen corresponding path program 1 times [2024-11-24 00:50:56,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:56,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545699111] [2024-11-24 00:50:56,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:56,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:50:59,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:59,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545699111] [2024-11-24 00:50:59,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545699111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:50:59,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656207976] [2024-11-24 00:50:59,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:59,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:50:59,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:50:59,103 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:50:59,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 00:51:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:01,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 00:51:01,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:51:02,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:51:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 128 proven. 65 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:51:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656207976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:51:03,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:51:03,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 16 [2024-11-24 00:51:03,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623722679] [2024-11-24 00:51:03,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:51:03,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 00:51:03,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:03,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 00:51:03,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:51:03,502 INFO L87 Difference]: Start difference. First operand 66842 states and 87519 transitions. Second operand has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:51:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:04,835 INFO L93 Difference]: Finished difference Result 132018 states and 172845 transitions. [2024-11-24 00:51:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:51:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 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 207 [2024-11-24 00:51:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:04,941 INFO L225 Difference]: With dead ends: 132018 [2024-11-24 00:51:04,941 INFO L226 Difference]: Without dead ends: 65278 [2024-11-24 00:51:04,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:51:04,980 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 370 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:04,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 650 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:51:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65278 states. [2024-11-24 00:51:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65278 to 62922. [2024-11-24 00:51:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62922 states, 62921 states have (on average 1.3111361866467475) internal successors, (82498), 62921 states have internal predecessors, (82498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:51:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62922 states to 62922 states and 82498 transitions. [2024-11-24 00:51:06,360 INFO L78 Accepts]: Start accepts. Automaton has 62922 states and 82498 transitions. Word has length 207 [2024-11-24 00:51:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:06,360 INFO L471 AbstractCegarLoop]: Abstraction has 62922 states and 82498 transitions. [2024-11-24 00:51:06,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:51:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 62922 states and 82498 transitions. [2024-11-24 00:51:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-24 00:51:06,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:06,374 INFO L218 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, 1] [2024-11-24 00:51:06,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-24 00:51:06,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 00:51:06,575 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:06,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1858472034, now seen corresponding path program 1 times [2024-11-24 00:51:06,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129272144] [2024-11-24 00:51:06,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 30 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:21,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129272144] [2024-11-24 00:51:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129272144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114695035] [2024-11-24 00:51:21,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:21,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:21,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:21,685 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:21,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6dc0128-c9a2-40de-b1a7-1c61155569c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 00:51:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:24,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 1678 conjuncts, 203 conjuncts are in the unsatisfiable core [2024-11-24 00:51:24,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 49 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:31,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:51:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 42 proven. 161 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-24 00:51:38,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114695035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:51:38,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:51:38,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 32, 26] total 93 [2024-11-24 00:51:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473416967] [2024-11-24 00:51:38,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:51:38,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-24 00:51:38,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:38,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-24 00:51:38,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=7982, Unknown=0, NotChecked=0, Total=8556 [2024-11-24 00:51:38,698 INFO L87 Difference]: Start difference. First operand 62922 states and 82498 transitions. Second operand has 93 states, 93 states have (on average 6.053763440860215) internal successors, (563), 93 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)