./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/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_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/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 32bit --witnessprinter.graph.data.programhash 7f76748541784d411910169ed2e15112ec49f79534c3b32715f52add5fae5a74 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:52:30,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:52:30,199 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:52:30,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:52:30,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:52:30,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:52:30,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:52:30,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:52:30,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:52:30,242 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:52:30,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:52:30,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:52:30,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:52:30,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:52:30,244 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:52:30,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:52:30,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:52:30,244 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:52:30,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:52:30,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:52:30,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:52:30,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:52:30,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:52:30,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:52:30,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:52:30,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:52:30,246 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:52:30,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:52:30,246 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:52:30,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:52:30,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:52:30,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:52:30,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:30,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:52:30,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:52:30,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:52:30,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:52:30,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:30,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:52:30,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:52:30,248 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:52:30,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:52:30,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:52:30,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:52:30,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:52:30,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:52:30,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:52:30,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:52:30,250 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_fc41f340-0ce3-4936-8a4b-10bfbe39848d/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f76748541784d411910169ed2e15112ec49f79534c3b32715f52add5fae5a74 [2024-11-24 01:52:30,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:52:30,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:52:30,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:52:30,650 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:52:30,651 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:52:30,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-24 01:52:34,093 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/data/3db995f3d/2ad87f7ff8154b65b40d7f60d5c5f05f/FLAG700f8985a [2024-11-24 01:52:35,051 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:52:35,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-24 01:52:35,113 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/data/3db995f3d/2ad87f7ff8154b65b40d7f60d5c5f05f/FLAG700f8985a [2024-11-24 01:52:35,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/data/3db995f3d/2ad87f7ff8154b65b40d7f60d5c5f05f [2024-11-24 01:52:35,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:52:35,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:52:35,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:52:35,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:52:35,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:52:35,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:52:35" (1/1) ... [2024-11-24 01:52:35,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445103f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:35, skipping insertion in model container [2024-11-24 01:52:35,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:52:35" (1/1) ... [2024-11-24 01:52:35,373 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:52:35,735 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_fc41f340-0ce3-4936-8a4b-10bfbe39848d/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c[6450,6463] [2024-11-24 01:52:35,816 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_fc41f340-0ce3-4936-8a4b-10bfbe39848d/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c[13740,13753] [2024-11-24 01:52:36,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:52:36,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:52:36,836 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_fc41f340-0ce3-4936-8a4b-10bfbe39848d/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c[6450,6463] [2024-11-24 01:52:36,871 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_fc41f340-0ce3-4936-8a4b-10bfbe39848d/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c[13740,13753] [2024-11-24 01:52:37,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:52:37,543 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:52:37,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37 WrapperNode [2024-11-24 01:52:37,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:52:37,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:52:37,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:52:37,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:52:37,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:37,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,185 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-11-24 01:52:38,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:52:38,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:52:38,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:52:38,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:52:38,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,558 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 01:52:38,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,846 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:38,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:39,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:39,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:52:39,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:52:39,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:52:39,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:52:39,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (1/1) ... [2024-11-24 01:52:39,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:39,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:52:39,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:52:39,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:52:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:52:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:52:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:52:39,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:52:39,346 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:52:39,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:52:46,773 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-24 01:52:46,774 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:52:46,830 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:52:46,835 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 01:52:46,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:52:46 BoogieIcfgContainer [2024-11-24 01:52:46,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:52:46,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:52:46,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:52:46,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:52:46,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:52:35" (1/3) ... [2024-11-24 01:52:46,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49669801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:52:46, skipping insertion in model container [2024-11-24 01:52:46,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:37" (2/3) ... [2024-11-24 01:52:46,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49669801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:52:46, skipping insertion in model container [2024-11-24 01:52:46,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:52:46" (3/3) ... [2024-11-24 01:52:46,857 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-24 01:52:46,878 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:52:46,881 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label02.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 01:52:46,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:52:47,018 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;@59ced532, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:52:47,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:52:47,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 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 01:52:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 01:52:47,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:47,041 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] [2024-11-24 01:52:47,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:47,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-24 01:52:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:47,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151891862] [2024-11-24 01:52:47,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:47,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:47,371 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 01:52:47,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:47,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151891862] [2024-11-24 01:52:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151891862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:47,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:47,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:52:47,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006702952] [2024-11-24 01:52:47,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:47,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:52:47,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:47,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:52:47,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:52:47,420 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:52:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:47,542 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-24 01:52:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:52:47,544 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-24 01:52:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:47,560 INFO L225 Difference]: With dead ends: 1724 [2024-11-24 01:52:47,561 INFO L226 Difference]: Without dead ends: 808 [2024-11-24 01:52:47,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:52:47,570 INFO L435 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:47,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:47,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-24 01:52:47,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-24 01:52:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 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 01:52:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-24 01:52:47,655 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-24 01:52:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:47,656 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-24 01:52:47,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:52:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-24 01:52:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 01:52:47,663 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:47,663 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] [2024-11-24 01:52:47,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:52:47,663 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:47,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-24 01:52:47,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:47,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14496317] [2024-11-24 01:52:47,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:47,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:48,080 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 01:52:48,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:48,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14496317] [2024-11-24 01:52:48,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14496317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:48,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:48,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:52:48,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039768850] [2024-11-24 01:52:48,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:48,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:52:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:48,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:52:48,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:52:48,087 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:52:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:48,257 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-24 01:52:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:52:48,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-24 01:52:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:48,265 INFO L225 Difference]: With dead ends: 844 [2024-11-24 01:52:48,265 INFO L226 Difference]: Without dead ends: 808 [2024-11-24 01:52:48,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 01:52:48,268 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:48,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-24 01:52:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-24 01:52:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 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 01:52:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-24 01:52:48,332 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-24 01:52:48,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:48,332 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-24 01:52:48,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:52:48,333 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-24 01:52:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-24 01:52:48,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:48,335 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] [2024-11-24 01:52:48,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:52:48,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:48,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-24 01:52:48,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:48,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705854693] [2024-11-24 01:52:48,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:48,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:48,540 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 01:52:48,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705854693] [2024-11-24 01:52:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705854693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:48,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:48,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:52:48,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633449650] [2024-11-24 01:52:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:48,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:52:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:48,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:52:48,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:52:48,543 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:52:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:48,829 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2024-11-24 01:52:48,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:52:48,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-11-24 01:52:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:48,836 INFO L225 Difference]: With dead ends: 1000 [2024-11-24 01:52:48,836 INFO L226 Difference]: Without dead ends: 968 [2024-11-24 01:52:48,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:52:48,838 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:48,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-24 01:52:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2024-11-24 01:52:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 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 01:52:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2024-11-24 01:52:48,875 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2024-11-24 01:52:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:48,876 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2024-11-24 01:52:48,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:52:48,876 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2024-11-24 01:52:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 01:52:48,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:48,880 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] [2024-11-24 01:52:48,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:52:48,880 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:48,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-24 01:52:48,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:48,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180499013] [2024-11-24 01:52:48,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:49,095 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 01:52:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:49,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180499013] [2024-11-24 01:52:49,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180499013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:49,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:49,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:49,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508450802] [2024-11-24 01:52:49,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:49,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:49,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:49,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:49,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:49,100 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:52:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:49,178 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2024-11-24 01:52:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-24 01:52:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:49,185 INFO L225 Difference]: With dead ends: 951 [2024-11-24 01:52:49,187 INFO L226 Difference]: Without dead ends: 889 [2024-11-24 01:52:49,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:49,191 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:49,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:49,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-24 01:52:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2024-11-24 01:52:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 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 01:52:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2024-11-24 01:52:49,254 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2024-11-24 01:52:49,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:49,255 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2024-11-24 01:52:49,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:52:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2024-11-24 01:52:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 01:52:49,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:49,260 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] [2024-11-24 01:52:49,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:52:49,261 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:49,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:49,262 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-24 01:52:49,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:49,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755575039] [2024-11-24 01:52:49,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:49,655 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 01:52:49,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755575039] [2024-11-24 01:52:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755575039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:49,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:49,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:52:49,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852020186] [2024-11-24 01:52:49,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:49,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:52:49,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:49,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:52:49,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:52:49,658 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:52:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:49,797 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2024-11-24 01:52:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:52:49,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-24 01:52:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:49,802 INFO L225 Difference]: With dead ends: 996 [2024-11-24 01:52:49,803 INFO L226 Difference]: Without dead ends: 887 [2024-11-24 01:52:49,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:52:49,805 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:49,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-24 01:52:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2024-11-24 01:52:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 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 01:52:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2024-11-24 01:52:49,844 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2024-11-24 01:52:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:49,847 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2024-11-24 01:52:49,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:52:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2024-11-24 01:52:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 01:52:49,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:49,850 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] [2024-11-24 01:52:49,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:52:49,850 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:49,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-24 01:52:49,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:49,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178348926] [2024-11-24 01:52:49,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:49,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:50,276 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 01:52:50,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:50,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178348926] [2024-11-24 01:52:50,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178348926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:50,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:50,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:52:50,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454199115] [2024-11-24 01:52:50,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:50,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:52:50,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:50,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:52:50,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:52:50,281 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:52:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:50,424 INFO L93 Difference]: Finished difference Result 893 states and 1635 transitions. [2024-11-24 01:52:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:52:50,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-24 01:52:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:50,433 INFO L225 Difference]: With dead ends: 893 [2024-11-24 01:52:50,433 INFO L226 Difference]: Without dead ends: 891 [2024-11-24 01:52:50,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:52:50,435 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:50,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-24 01:52:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2024-11-24 01:52:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 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 01:52:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2024-11-24 01:52:50,470 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2024-11-24 01:52:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:50,471 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2024-11-24 01:52:50,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:52:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2024-11-24 01:52:50,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 01:52:50,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:50,472 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] [2024-11-24 01:52:50,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:52:50,472 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:50,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-24 01:52:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336639246] [2024-11-24 01:52:50,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:50,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:50,538 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 01:52:50,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336639246] [2024-11-24 01:52:50,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336639246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:50,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:50,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:50,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371483123] [2024-11-24 01:52:50,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:50,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:50,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:50,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:50,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:50,541 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:52:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:50,584 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2024-11-24 01:52:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:50,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-24 01:52:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:50,590 INFO L225 Difference]: With dead ends: 1105 [2024-11-24 01:52:50,590 INFO L226 Difference]: Without dead ends: 990 [2024-11-24 01:52:50,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:50,592 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:50,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:50,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-24 01:52:50,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-11-24 01:52:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 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 01:52:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2024-11-24 01:52:50,627 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2024-11-24 01:52:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:50,628 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2024-11-24 01:52:50,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:52:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2024-11-24 01:52:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 01:52:50,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:50,630 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] [2024-11-24 01:52:50,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:52:50,631 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:50,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-24 01:52:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:50,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656391506] [2024-11-24 01:52:50,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:50,718 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 01:52:50,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:50,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656391506] [2024-11-24 01:52:50,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656391506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:50,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:50,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:50,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141121413] [2024-11-24 01:52:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:50,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:50,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:50,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:50,722 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:52:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:50,769 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2024-11-24 01:52:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-24 01:52:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:50,776 INFO L225 Difference]: With dead ends: 1380 [2024-11-24 01:52:50,776 INFO L226 Difference]: Without dead ends: 1168 [2024-11-24 01:52:50,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:50,778 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:50,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:50,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-24 01:52:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2024-11-24 01:52:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 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 01:52:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2024-11-24 01:52:50,820 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2024-11-24 01:52:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:50,820 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2024-11-24 01:52:50,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:52:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2024-11-24 01:52:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-24 01:52:50,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:50,821 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] [2024-11-24 01:52:50,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:52:50,821 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:50,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-24 01:52:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:50,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743025567] [2024-11-24 01:52:50,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:50,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:50,951 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 01:52:50,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:50,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743025567] [2024-11-24 01:52:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743025567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:50,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:50,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879671706] [2024-11-24 01:52:50,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:50,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:50,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:50,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:50,953 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 01:52:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:51,007 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2024-11-24 01:52:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:51,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-24 01:52:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:51,015 INFO L225 Difference]: With dead ends: 1589 [2024-11-24 01:52:51,015 INFO L226 Difference]: Without dead ends: 1354 [2024-11-24 01:52:51,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:51,018 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:51,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2024-11-24 01:52:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2024-11-24 01:52:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 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 01:52:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2024-11-24 01:52:51,072 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2024-11-24 01:52:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:51,072 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2024-11-24 01:52:51,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 01:52:51,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2024-11-24 01:52:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 01:52:51,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:51,073 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:51,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:52:51,073 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:51,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-24 01:52:51,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:51,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754076284] [2024-11-24 01:52:51,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:51,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:52:51,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:51,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754076284] [2024-11-24 01:52:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754076284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:51,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:51,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:52:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609022847] [2024-11-24 01:52:51,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:51,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:52:51,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:51,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:52:51,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:52:51,282 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 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 01:52:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:51,463 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2024-11-24 01:52:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:52:51,464 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 54 [2024-11-24 01:52:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:51,477 INFO L225 Difference]: With dead ends: 3208 [2024-11-24 01:52:51,478 INFO L226 Difference]: Without dead ends: 2634 [2024-11-24 01:52:51,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:52:51,481 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:51,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-11-24 01:52:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2024-11-24 01:52:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 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 01:52:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2024-11-24 01:52:51,570 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2024-11-24 01:52:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:51,572 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2024-11-24 01:52:51,572 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 01:52:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2024-11-24 01:52:51,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 01:52:51,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:51,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:51,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:52:51,574 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:51,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:51,575 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-24 01:52:51,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:51,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552632279] [2024-11-24 01:52:51,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:51,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:52:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552632279] [2024-11-24 01:52:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552632279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:51,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:51,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:52:51,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302602575] [2024-11-24 01:52:51,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:51,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:52:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:51,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:52:51,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:52:51,785 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 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 01:52:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:51,991 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2024-11-24 01:52:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:52:51,992 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 54 [2024-11-24 01:52:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:52,008 INFO L225 Difference]: With dead ends: 3780 [2024-11-24 01:52:52,009 INFO L226 Difference]: Without dead ends: 3206 [2024-11-24 01:52:52,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:52:52,015 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:52,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2024-11-24 01:52:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2024-11-24 01:52:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 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 01:52:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2024-11-24 01:52:52,140 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2024-11-24 01:52:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:52,141 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2024-11-24 01:52:52,141 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 01:52:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2024-11-24 01:52:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:52:52,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:52,143 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:52,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:52:52,143 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:52,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-24 01:52:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:52,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350785590] [2024-11-24 01:52:52,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:52,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:52:52,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:52,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350785590] [2024-11-24 01:52:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350785590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:52,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216926423] [2024-11-24 01:52:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:52,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:52,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:52,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:52,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:52,295 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:52:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:52,372 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2024-11-24 01:52:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:52,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-24 01:52:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:52,383 INFO L225 Difference]: With dead ends: 4260 [2024-11-24 01:52:52,383 INFO L226 Difference]: Without dead ends: 2254 [2024-11-24 01:52:52,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:52,386 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:52,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-11-24 01:52:52,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2024-11-24 01:52:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 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 01:52:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2024-11-24 01:52:52,545 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2024-11-24 01:52:52,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:52,546 INFO L471 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2024-11-24 01:52:52,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:52:52,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2024-11-24 01:52:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:52:52,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:52,547 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:52,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:52:52,548 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:52,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-24 01:52:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461236278] [2024-11-24 01:52:52,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:52,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:52:52,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461236278] [2024-11-24 01:52:52,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461236278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:52,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:52,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:52:52,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799093684] [2024-11-24 01:52:52,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:52,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:52:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:52,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:52:52,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:52:52,719 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:52:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:52,949 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2024-11-24 01:52:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:52:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-24 01:52:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:52,962 INFO L225 Difference]: With dead ends: 3508 [2024-11-24 01:52:52,962 INFO L226 Difference]: Without dead ends: 3090 [2024-11-24 01:52:52,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:52:52,966 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:52,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2024-11-24 01:52:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2024-11-24 01:52:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 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 01:52:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2024-11-24 01:52:53,149 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2024-11-24 01:52:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:53,150 INFO L471 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2024-11-24 01:52:53,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:52:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2024-11-24 01:52:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 01:52:53,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:53,154 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:53,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:52:53,156 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:53,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-24 01:52:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:53,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013740310] [2024-11-24 01:52:53,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:52:53,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013740310] [2024-11-24 01:52:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013740310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:53,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452425300] [2024-11-24 01:52:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:53,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:53,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:53,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:53,303 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:52:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:53,370 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2024-11-24 01:52:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:53,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-11-24 01:52:53,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:53,382 INFO L225 Difference]: With dead ends: 3608 [2024-11-24 01:52:53,382 INFO L226 Difference]: Without dead ends: 1734 [2024-11-24 01:52:53,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:53,385 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:53,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-24 01:52:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2024-11-24 01:52:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 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 01:52:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2024-11-24 01:52:53,450 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2024-11-24 01:52:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:53,451 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2024-11-24 01:52:53,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:52:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2024-11-24 01:52:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 01:52:53,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:53,453 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:53,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:52:53,453 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:53,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:53,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-24 01:52:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809762781] [2024-11-24 01:52:53,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:52:53,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:53,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809762781] [2024-11-24 01:52:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809762781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:53,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:53,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:53,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466479209] [2024-11-24 01:52:53,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:53,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:53,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:53,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:53,593 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:52:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:53,646 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2024-11-24 01:52:53,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:53,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2024-11-24 01:52:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:53,656 INFO L225 Difference]: With dead ends: 2204 [2024-11-24 01:52:53,659 INFO L226 Difference]: Without dead ends: 1266 [2024-11-24 01:52:53,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:53,661 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:53,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:53,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-24 01:52:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2024-11-24 01:52:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 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 01:52:53,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2024-11-24 01:52:53,725 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2024-11-24 01:52:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:53,725 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2024-11-24 01:52:53,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:52:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2024-11-24 01:52:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 01:52:53,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:53,727 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:53,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:52:53,727 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:53,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-24 01:52:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:53,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599441408] [2024-11-24 01:52:53,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:53,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:52:55,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:55,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599441408] [2024-11-24 01:52:55,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599441408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:52:55,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474118659] [2024-11-24 01:52:55,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:55,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:52:55,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:52:55,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:52:55,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:52:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:56,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:52:56,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:52:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:52:56,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:52:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:52:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474118659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:52:56,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:52:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-24 01:52:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971652029] [2024-11-24 01:52:56,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:52:56,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:52:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:56,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:52:56,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:52:56,655 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 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 01:53:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:00,314 INFO L93 Difference]: Finished difference Result 3665 states and 5284 transitions. [2024-11-24 01:53:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-24 01:53:00,315 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 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 61 [2024-11-24 01:53:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:00,324 INFO L225 Difference]: With dead ends: 3665 [2024-11-24 01:53:00,324 INFO L226 Difference]: Without dead ends: 3195 [2024-11-24 01:53:00,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 01:53:00,327 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 14347 mSDsluCounter, 7682 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14347 SdHoareTripleChecker+Valid, 9181 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:00,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14347 Valid, 9181 Invalid, 727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:53:00,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2024-11-24 01:53:00,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3161. [2024-11-24 01:53:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 3159 states have (on average 1.4102564102564104) internal successors, (4455), 3160 states have internal predecessors, (4455), 0 states have call successors, (0), 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 01:53:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4455 transitions. [2024-11-24 01:53:00,460 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4455 transitions. Word has length 61 [2024-11-24 01:53:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:00,461 INFO L471 AbstractCegarLoop]: Abstraction has 3161 states and 4455 transitions. [2024-11-24 01:53:00,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 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 01:53:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4455 transitions. [2024-11-24 01:53:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 01:53:00,462 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:00,463 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:00,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:53:00,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 01:53:00,667 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:00,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-24 01:53:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091086926] [2024-11-24 01:53:00,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:00,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:04,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091086926] [2024-11-24 01:53:04,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091086926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641701641] [2024-11-24 01:53:04,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:04,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:04,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:04,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:04,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:53:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:04,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:53:04,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:04,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641701641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:05,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:05,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-24 01:53:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73707419] [2024-11-24 01:53:05,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:05,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:53:05,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:05,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:53:05,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:53:05,937 INFO L87 Difference]: Start difference. First operand 3161 states and 4455 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 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 01:53:06,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:06,910 INFO L93 Difference]: Finished difference Result 7430 states and 9870 transitions. [2024-11-24 01:53:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:53:06,911 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-24 01:53:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:06,933 INFO L225 Difference]: With dead ends: 7430 [2024-11-24 01:53:06,933 INFO L226 Difference]: Without dead ends: 5471 [2024-11-24 01:53:06,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:53:06,939 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 15174 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15174 SdHoareTripleChecker+Valid, 4758 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:06,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15174 Valid, 4758 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:53:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2024-11-24 01:53:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 5405. [2024-11-24 01:53:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5403 states have (on average 1.331482509716824) internal successors, (7194), 5404 states have internal predecessors, (7194), 0 states have call successors, (0), 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 01:53:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 7194 transitions. [2024-11-24 01:53:07,339 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 7194 transitions. Word has length 62 [2024-11-24 01:53:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:07,340 INFO L471 AbstractCegarLoop]: Abstraction has 5405 states and 7194 transitions. [2024-11-24 01:53:07,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 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 01:53:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 7194 transitions. [2024-11-24 01:53:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 01:53:07,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:07,347 INFO L218 NwaCegarLoop]: trace histogram [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 01:53:07,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:53:07,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 01:53:07,551 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:07,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-24 01:53:07,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:07,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497828248] [2024-11-24 01:53:07,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:08,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497828248] [2024-11-24 01:53:08,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497828248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944314065] [2024-11-24 01:53:08,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:08,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:08,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:08,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:08,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:53:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:08,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 01:53:08,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:09,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:10,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944314065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:10,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:10,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-24 01:53:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274593231] [2024-11-24 01:53:10,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:10,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 01:53:10,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:10,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 01:53:10,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-24 01:53:10,781 INFO L87 Difference]: Start difference. First operand 5405 states and 7194 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:53:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:15,328 INFO L93 Difference]: Finished difference Result 15652 states and 19990 transitions. [2024-11-24 01:53:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-24 01:53:15,329 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-24 01:53:15,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:15,354 INFO L225 Difference]: With dead ends: 15652 [2024-11-24 01:53:15,354 INFO L226 Difference]: Without dead ends: 11554 [2024-11-24 01:53:15,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-24 01:53:15,362 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 23397 mSDsluCounter, 16828 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23397 SdHoareTripleChecker+Valid, 18336 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:15,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23397 Valid, 18336 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:53:15,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11554 states. [2024-11-24 01:53:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 7604. [2024-11-24 01:53:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 7602 states have (on average 1.2947908445146015) internal successors, (9843), 7603 states have internal predecessors, (9843), 0 states have call successors, (0), 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 01:53:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 9843 transitions. [2024-11-24 01:53:15,786 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 9843 transitions. Word has length 62 [2024-11-24 01:53:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:15,786 INFO L471 AbstractCegarLoop]: Abstraction has 7604 states and 9843 transitions. [2024-11-24 01:53:15,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:53:15,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 9843 transitions. [2024-11-24 01:53:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 01:53:15,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:15,788 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:15,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:53:15,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 01:53:15,993 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:15,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-24 01:53:15,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:15,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682172458] [2024-11-24 01:53:15,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:15,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:16,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:16,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682172458] [2024-11-24 01:53:16,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682172458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428375786] [2024-11-24 01:53:16,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:16,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:16,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:16,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:16,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:53:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:16,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 01:53:16,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:18,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428375786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:20,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-24 01:53:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744828511] [2024-11-24 01:53:20,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:20,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 01:53:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:20,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 01:53:20,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:53:20,159 INFO L87 Difference]: Start difference. First operand 7604 states and 9843 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 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 01:53:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:22,707 INFO L93 Difference]: Finished difference Result 16330 states and 20685 transitions. [2024-11-24 01:53:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 01:53:22,708 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 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 63 [2024-11-24 01:53:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:22,735 INFO L225 Difference]: With dead ends: 16330 [2024-11-24 01:53:22,736 INFO L226 Difference]: Without dead ends: 10686 [2024-11-24 01:53:22,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 01:53:22,744 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 15734 mSDsluCounter, 6542 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15734 SdHoareTripleChecker+Valid, 8056 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:22,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15734 Valid, 8056 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:53:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2024-11-24 01:53:23,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 10080. [2024-11-24 01:53:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10080 states, 10078 states have (on average 1.268604881921016) internal successors, (12785), 10079 states have internal predecessors, (12785), 0 states have call successors, (0), 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 01:53:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10080 states to 10080 states and 12785 transitions. [2024-11-24 01:53:23,301 INFO L78 Accepts]: Start accepts. Automaton has 10080 states and 12785 transitions. Word has length 63 [2024-11-24 01:53:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:23,302 INFO L471 AbstractCegarLoop]: Abstraction has 10080 states and 12785 transitions. [2024-11-24 01:53:23,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 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 01:53:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10080 states and 12785 transitions. [2024-11-24 01:53:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 01:53:23,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:23,304 INFO L218 NwaCegarLoop]: trace histogram [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 01:53:23,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:53:23,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:23,506 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:23,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-24 01:53:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:23,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577658679] [2024-11-24 01:53:23,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577658679] [2024-11-24 01:53:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577658679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729385340] [2024-11-24 01:53:26,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:26,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:26,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:26,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:26,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:53:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:26,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 01:53:26,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:30,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:33,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729385340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:33,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:33,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-24 01:53:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131563381] [2024-11-24 01:53:33,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:33,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 01:53:33,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:33,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 01:53:33,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 01:53:33,165 INFO L87 Difference]: Start difference. First operand 10080 states and 12785 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 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 01:54:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:05,263 INFO L93 Difference]: Finished difference Result 20387 states and 25368 transitions. [2024-11-24 01:54:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-24 01:54:05,264 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 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 63 [2024-11-24 01:54:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:05,297 INFO L225 Difference]: With dead ends: 20387 [2024-11-24 01:54:05,297 INFO L226 Difference]: Without dead ends: 16643 [2024-11-24 01:54:05,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=4194, Invalid=16398, Unknown=0, NotChecked=0, Total=20592 [2024-11-24 01:54:05,307 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 15673 mSDsluCounter, 26940 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15673 SdHoareTripleChecker+Valid, 28482 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:05,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15673 Valid, 28482 Invalid, 2629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 01:54:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16643 states. [2024-11-24 01:54:06,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16643 to 13196. [2024-11-24 01:54:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13196 states, 13194 states have (on average 1.2616340760951947) internal successors, (16646), 13195 states have internal predecessors, (16646), 0 states have call successors, (0), 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 01:54:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13196 states to 13196 states and 16646 transitions. [2024-11-24 01:54:06,728 INFO L78 Accepts]: Start accepts. Automaton has 13196 states and 16646 transitions. Word has length 63 [2024-11-24 01:54:06,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:06,728 INFO L471 AbstractCegarLoop]: Abstraction has 13196 states and 16646 transitions. [2024-11-24 01:54:06,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 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 01:54:06,729 INFO L276 IsEmpty]: Start isEmpty. Operand 13196 states and 16646 transitions. [2024-11-24 01:54:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 01:54:06,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:06,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:06,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:54:06,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:06,933 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:06,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash 606047555, now seen corresponding path program 1 times [2024-11-24 01:54:06,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:06,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538497293] [2024-11-24 01:54:06,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:06,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:07,013 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 01:54:07,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:07,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538497293] [2024-11-24 01:54:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538497293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:54:07,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:54:07,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:54:07,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138859634] [2024-11-24 01:54:07,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:54:07,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:54:07,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:07,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:54:07,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:54:07,016 INFO L87 Difference]: Start difference. First operand 13196 states and 16646 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 01:54:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:13,355 INFO L93 Difference]: Finished difference Result 14700 states and 19519 transitions. [2024-11-24 01:54:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:54:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-24 01:54:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:13,378 INFO L225 Difference]: With dead ends: 14700 [2024-11-24 01:54:13,379 INFO L226 Difference]: Without dead ends: 13947 [2024-11-24 01:54:13,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:54:13,383 INFO L435 NwaCegarLoop]: 540 mSDtfsCounter, 810 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:13,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 547 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-24 01:54:13,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13947 states. [2024-11-24 01:54:14,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13947 to 13947. [2024-11-24 01:54:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13947 states, 13945 states have (on average 1.2638938687701686) internal successors, (17625), 13946 states have internal predecessors, (17625), 0 states have call successors, (0), 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 01:54:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13947 states to 13947 states and 17625 transitions. [2024-11-24 01:54:14,407 INFO L78 Accepts]: Start accepts. Automaton has 13947 states and 17625 transitions. Word has length 63 [2024-11-24 01:54:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:14,407 INFO L471 AbstractCegarLoop]: Abstraction has 13947 states and 17625 transitions. [2024-11-24 01:54:14,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 01:54:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 13947 states and 17625 transitions. [2024-11-24 01:54:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:54:14,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:14,409 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:54:14,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:54:14,410 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:14,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:14,410 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-24 01:54:14,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:14,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426594904] [2024-11-24 01:54:14,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:14,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:15,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:15,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426594904] [2024-11-24 01:54:15,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426594904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:15,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15839423] [2024-11-24 01:54:15,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:15,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:15,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:15,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:15,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:54:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:16,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 01:54:16,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:54:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:17,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:54:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15839423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:54:18,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:54:18,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-24 01:54:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115407830] [2024-11-24 01:54:18,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:54:18,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 01:54:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:18,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 01:54:18,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:54:18,571 INFO L87 Difference]: Start difference. First operand 13947 states and 17625 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 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 01:54:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:22,985 INFO L93 Difference]: Finished difference Result 18807 states and 23551 transitions. [2024-11-24 01:54:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 01:54:22,987 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-24 01:54:22,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:23,030 INFO L225 Difference]: With dead ends: 18807 [2024-11-24 01:54:23,031 INFO L226 Difference]: Without dead ends: 13060 [2024-11-24 01:54:23,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-24 01:54:23,050 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 9680 mSDsluCounter, 15652 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9680 SdHoareTripleChecker+Valid, 17169 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:23,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9680 Valid, 17169 Invalid, 1138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:54:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13060 states. [2024-11-24 01:54:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13060 to 10942. [2024-11-24 01:54:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10942 states, 10940 states have (on average 1.2707495429616087) internal successors, (13902), 10941 states have internal predecessors, (13902), 0 states have call successors, (0), 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 01:54:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10942 states to 10942 states and 13902 transitions. [2024-11-24 01:54:24,060 INFO L78 Accepts]: Start accepts. Automaton has 10942 states and 13902 transitions. Word has length 64 [2024-11-24 01:54:24,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:24,060 INFO L471 AbstractCegarLoop]: Abstraction has 10942 states and 13902 transitions. [2024-11-24 01:54:24,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 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 01:54:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 10942 states and 13902 transitions. [2024-11-24 01:54:24,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 01:54:24,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:24,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:24,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:54:24,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:24,267 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:24,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-24 01:54:24,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:24,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227837044] [2024-11-24 01:54:24,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:26,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227837044] [2024-11-24 01:54:26,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227837044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:26,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968923949] [2024-11-24 01:54:26,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:26,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:26,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:26,779 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:26,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:54:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:26,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 01:54:26,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:54:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:27,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:54:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:29,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968923949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:54:29,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:54:29,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-24 01:54:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610251175] [2024-11-24 01:54:29,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:54:29,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-24 01:54:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:29,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-24 01:54:29,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 01:54:29,678 INFO L87 Difference]: Start difference. First operand 10942 states and 13902 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 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 01:54:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:42,105 INFO L93 Difference]: Finished difference Result 17682 states and 22109 transitions. [2024-11-24 01:54:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-24 01:54:42,106 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-24 01:54:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:42,115 INFO L225 Difference]: With dead ends: 17682 [2024-11-24 01:54:42,115 INFO L226 Difference]: Without dead ends: 12903 [2024-11-24 01:54:42,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2078, Invalid=7822, Unknown=0, NotChecked=0, Total=9900 [2024-11-24 01:54:42,120 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 19811 mSDsluCounter, 30143 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19811 SdHoareTripleChecker+Valid, 31701 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:42,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19811 Valid, 31701 Invalid, 2491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 01:54:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12903 states. [2024-11-24 01:54:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12903 to 8791. [2024-11-24 01:54:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8791 states, 8789 states have (on average 1.2831949027193081) internal successors, (11278), 8790 states have internal predecessors, (11278), 0 states have call successors, (0), 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 01:54:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11278 transitions. [2024-11-24 01:54:42,778 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11278 transitions. Word has length 65 [2024-11-24 01:54:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:42,778 INFO L471 AbstractCegarLoop]: Abstraction has 8791 states and 11278 transitions. [2024-11-24 01:54:42,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 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 01:54:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11278 transitions. [2024-11-24 01:54:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:54:42,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:42,782 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-24 01:54:42,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:54:42,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 01:54:42,983 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:42,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:42,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-11-24 01:54:42,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:42,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128030805] [2024-11-24 01:54:42,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:42,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:44,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128030805] [2024-11-24 01:54:44,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128030805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182521647] [2024-11-24 01:54:44,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:44,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:44,223 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:44,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:54:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:44,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:54:44,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:54:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:45,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:54:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:47,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182521647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:54:47,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:54:47,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-24 01:54:47,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652972419] [2024-11-24 01:54:47,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:54:47,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 01:54:47,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:47,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 01:54:47,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:54:47,937 INFO L87 Difference]: Start difference. First operand 8791 states and 11278 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 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 01:54:49,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:49,241 INFO L93 Difference]: Finished difference Result 13707 states and 17334 transitions. [2024-11-24 01:54:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:54:49,241 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-24 01:54:49,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:49,248 INFO L225 Difference]: With dead ends: 13707 [2024-11-24 01:54:49,249 INFO L226 Difference]: Without dead ends: 9111 [2024-11-24 01:54:49,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:54:49,252 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 20850 mSDsluCounter, 10719 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20850 SdHoareTripleChecker+Valid, 12234 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:49,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20850 Valid, 12234 Invalid, 536 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:54:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9111 states. [2024-11-24 01:54:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9111 to 8791. [2024-11-24 01:54:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8791 states, 8789 states have (on average 1.2738650585959723) internal successors, (11196), 8790 states have internal predecessors, (11196), 0 states have call successors, (0), 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 01:54:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11196 transitions. [2024-11-24 01:54:50,019 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11196 transitions. Word has length 103 [2024-11-24 01:54:50,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:50,020 INFO L471 AbstractCegarLoop]: Abstraction has 8791 states and 11196 transitions. [2024-11-24 01:54:50,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 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 01:54:50,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11196 transitions. [2024-11-24 01:54:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:54:50,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:50,043 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:50,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:54:50,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 01:54:50,248 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:50,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:50,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-11-24 01:54:50,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:50,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752806052] [2024-11-24 01:54:50,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:51,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:51,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752806052] [2024-11-24 01:54:51,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752806052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:51,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437687953] [2024-11-24 01:54:51,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:51,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:51,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:51,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:51,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:54:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:51,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 01:54:51,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:54:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:52,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:54:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:54:54,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437687953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:54:54,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:54:54,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-24 01:54:54,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369161740] [2024-11-24 01:54:54,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:54:54,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 01:54:54,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:54,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 01:54:54,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:54:54,603 INFO L87 Difference]: Start difference. First operand 8791 states and 11196 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 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 01:54:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:56,315 INFO L93 Difference]: Finished difference Result 13056 states and 16386 transitions. [2024-11-24 01:54:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:54:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-24 01:54:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:56,327 INFO L225 Difference]: With dead ends: 13056 [2024-11-24 01:54:56,328 INFO L226 Difference]: Without dead ends: 8877 [2024-11-24 01:54:56,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 01:54:56,335 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 16267 mSDsluCounter, 12245 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16267 SdHoareTripleChecker+Valid, 13760 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:56,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16267 Valid, 13760 Invalid, 529 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:54:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2024-11-24 01:54:57,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 8791. [2024-11-24 01:54:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8791 states, 8789 states have (on average 1.267607236318125) internal successors, (11141), 8790 states have internal predecessors, (11141), 0 states have call successors, (0), 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 01:54:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8791 states to 8791 states and 11141 transitions. [2024-11-24 01:54:57,364 INFO L78 Accepts]: Start accepts. Automaton has 8791 states and 11141 transitions. Word has length 103 [2024-11-24 01:54:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:57,364 INFO L471 AbstractCegarLoop]: Abstraction has 8791 states and 11141 transitions. [2024-11-24 01:54:57,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 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 01:54:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8791 states and 11141 transitions. [2024-11-24 01:54:57,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 01:54:57,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:57,368 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:57,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:54:57,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 01:54:57,569 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:57,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:57,570 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-11-24 01:54:57,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:57,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525676392] [2024-11-24 01:54:57,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:57,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:54:59,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:59,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525676392] [2024-11-24 01:54:59,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525676392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:59,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859769602] [2024-11-24 01:54:59,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:59,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:59,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:59,439 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:59,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:54:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:59,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 01:54:59,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:01,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:06,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859769602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:06,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:55:06,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-24 01:55:06,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147428549] [2024-11-24 01:55:06,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:06,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-24 01:55:06,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:06,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-24 01:55:06,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 01:55:06,711 INFO L87 Difference]: Start difference. First operand 8791 states and 11141 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 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 01:55:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:35,568 INFO L93 Difference]: Finished difference Result 14889 states and 18404 transitions. [2024-11-24 01:55:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-24 01:55:35,569 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 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) Word has length 104 [2024-11-24 01:55:35,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:35,577 INFO L225 Difference]: With dead ends: 14889 [2024-11-24 01:55:35,577 INFO L226 Difference]: Without dead ends: 10973 [2024-11-24 01:55:35,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9886 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=5256, Invalid=28416, Unknown=0, NotChecked=0, Total=33672 [2024-11-24 01:55:35,582 INFO L435 NwaCegarLoop]: 1686 mSDtfsCounter, 27782 mSDsluCounter, 32275 mSDsCounter, 0 mSdLazyCounter, 3960 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27782 SdHoareTripleChecker+Valid, 33961 SdHoareTripleChecker+Invalid, 4219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 3960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:35,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27782 Valid, 33961 Invalid, 4219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [259 Valid, 3960 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 01:55:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10973 states. [2024-11-24 01:55:36,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10973 to 8435. [2024-11-24 01:55:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8435 states, 8433 states have (on average 1.265030238349342) internal successors, (10668), 8434 states have internal predecessors, (10668), 0 states have call successors, (0), 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 01:55:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8435 states to 8435 states and 10668 transitions. [2024-11-24 01:55:36,442 INFO L78 Accepts]: Start accepts. Automaton has 8435 states and 10668 transitions. Word has length 104 [2024-11-24 01:55:36,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:36,443 INFO L471 AbstractCegarLoop]: Abstraction has 8435 states and 10668 transitions. [2024-11-24 01:55:36,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 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 01:55:36,443 INFO L276 IsEmpty]: Start isEmpty. Operand 8435 states and 10668 transitions. [2024-11-24 01:55:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:55:36,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:36,446 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 01:55:36,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:55:36,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 01:55:36,647 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:36,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:36,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-11-24 01:55:36,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:36,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492088566] [2024-11-24 01:55:36,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:36,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:38,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492088566] [2024-11-24 01:55:38,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492088566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857506510] [2024-11-24 01:55:38,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:38,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:38,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:38,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:38,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:55:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:38,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 01:55:38,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:41,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857506510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:45,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:55:45,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 54 [2024-11-24 01:55:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693377091] [2024-11-24 01:55:45,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:45,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-24 01:55:45,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:45,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-24 01:55:45,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2630, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 01:55:45,302 INFO L87 Difference]: Start difference. First operand 8435 states and 10668 transitions. Second operand has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 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 01:56:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:37,764 INFO L93 Difference]: Finished difference Result 17331 states and 21336 transitions. [2024-11-24 01:56:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-11-24 01:56:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 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 105 [2024-11-24 01:56:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:37,775 INFO L225 Difference]: With dead ends: 17331 [2024-11-24 01:56:37,775 INFO L226 Difference]: Without dead ends: 13267 [2024-11-24 01:56:37,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 49.8s TimeCoverageRelationStatistics Valid=8347, Invalid=42053, Unknown=0, NotChecked=0, Total=50400 [2024-11-24 01:56:37,783 INFO L435 NwaCegarLoop]: 1611 mSDtfsCounter, 20172 mSDsluCounter, 38623 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20172 SdHoareTripleChecker+Valid, 40234 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:37,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20172 Valid, 40234 Invalid, 3098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [161 Valid, 2937 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 01:56:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13267 states. [2024-11-24 01:56:38,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13267 to 12983. [2024-11-24 01:56:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12983 states, 12981 states have (on average 1.2396579616362375) internal successors, (16092), 12982 states have internal predecessors, (16092), 0 states have call successors, (0), 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 01:56:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12983 states to 12983 states and 16092 transitions. [2024-11-24 01:56:38,977 INFO L78 Accepts]: Start accepts. Automaton has 12983 states and 16092 transitions. Word has length 105 [2024-11-24 01:56:38,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:38,977 INFO L471 AbstractCegarLoop]: Abstraction has 12983 states and 16092 transitions. [2024-11-24 01:56:38,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 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 01:56:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 12983 states and 16092 transitions. [2024-11-24 01:56:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 01:56:38,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:38,980 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 01:56:38,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:56:39,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:56:39,181 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:39,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1969661904, now seen corresponding path program 1 times [2024-11-24 01:56:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:39,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965886540] [2024-11-24 01:56:39,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:39,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:56:41,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965886540] [2024-11-24 01:56:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965886540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590935744] [2024-11-24 01:56:41,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:41,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:41,489 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:41,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:56:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:41,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-24 01:56:41,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:56:46,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:56:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:56:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590935744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:56:57,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:56:57,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 76 [2024-11-24 01:56:57,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295279732] [2024-11-24 01:56:57,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:56:57,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-24 01:56:57,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:57,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-24 01:56:57,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=5141, Unknown=0, NotChecked=0, Total=5700 [2024-11-24 01:56:57,415 INFO L87 Difference]: Start difference. First operand 12983 states and 16092 transitions. Second operand has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 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 01:58:09,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:09,832 INFO L93 Difference]: Finished difference Result 27856 states and 33932 transitions. [2024-11-24 01:58:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-24 01:58:09,832 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 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) Word has length 106 [2024-11-24 01:58:09,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:09,849 INFO L225 Difference]: With dead ends: 27856 [2024-11-24 01:58:09,849 INFO L226 Difference]: Without dead ends: 18690 [2024-11-24 01:58:09,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 72.7s TimeCoverageRelationStatistics Valid=9117, Invalid=45405, Unknown=0, NotChecked=0, Total=54522 [2024-11-24 01:58:09,861 INFO L435 NwaCegarLoop]: 1646 mSDtfsCounter, 18777 mSDsluCounter, 25776 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18777 SdHoareTripleChecker+Valid, 27422 SdHoareTripleChecker+Invalid, 3603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:09,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18777 Valid, 27422 Invalid, 3603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 3430 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-24 01:58:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18690 states. [2024-11-24 01:58:11,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18690 to 15344. [2024-11-24 01:58:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15344 states, 15342 states have (on average 1.232107938991005) internal successors, (18903), 15343 states have internal predecessors, (18903), 0 states have call successors, (0), 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 01:58:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15344 states to 15344 states and 18903 transitions. [2024-11-24 01:58:11,267 INFO L78 Accepts]: Start accepts. Automaton has 15344 states and 18903 transitions. Word has length 106 [2024-11-24 01:58:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:11,267 INFO L471 AbstractCegarLoop]: Abstraction has 15344 states and 18903 transitions. [2024-11-24 01:58:11,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 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 01:58:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 15344 states and 18903 transitions. [2024-11-24 01:58:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:58:11,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:11,270 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:11,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:11,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:58:11,474 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:58:11,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-11-24 01:58:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:58:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586602726] [2024-11-24 01:58:11,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:58:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:12,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:58:12,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586602726] [2024-11-24 01:58:12,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586602726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:58:12,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239900721] [2024-11-24 01:58:12,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:12,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:12,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:12,192 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:12,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:58:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:12,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 01:58:12,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:14,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:58:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:18,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239900721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:58:18,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:58:18,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-11-24 01:58:18,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296387276] [2024-11-24 01:58:18,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:58:18,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-24 01:58:18,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:58:18,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-24 01:58:18,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 01:58:18,421 INFO L87 Difference]: Start difference. First operand 15344 states and 18903 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 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 01:58:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:25,297 INFO L93 Difference]: Finished difference Result 36453 states and 44254 transitions. [2024-11-24 01:58:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-24 01:58:25,298 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 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 107 [2024-11-24 01:58:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:25,321 INFO L225 Difference]: With dead ends: 36453 [2024-11-24 01:58:25,321 INFO L226 Difference]: Without dead ends: 25260 [2024-11-24 01:58:25,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1232, Invalid=5088, Unknown=0, NotChecked=0, Total=6320 [2024-11-24 01:58:25,329 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 25658 mSDsluCounter, 20712 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25658 SdHoareTripleChecker+Valid, 22285 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:25,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25658 Valid, 22285 Invalid, 1331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:58:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25260 states. [2024-11-24 01:58:27,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25260 to 22928. [2024-11-24 01:58:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22928 states, 22926 states have (on average 1.2167408182849166) internal successors, (27895), 22927 states have internal predecessors, (27895), 0 states have call successors, (0), 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 01:58:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22928 states to 22928 states and 27895 transitions. [2024-11-24 01:58:28,009 INFO L78 Accepts]: Start accepts. Automaton has 22928 states and 27895 transitions. Word has length 107 [2024-11-24 01:58:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:28,010 INFO L471 AbstractCegarLoop]: Abstraction has 22928 states and 27895 transitions. [2024-11-24 01:58:28,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 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 01:58:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 22928 states and 27895 transitions. [2024-11-24 01:58:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:58:28,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:28,012 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:28,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:28,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:58:28,213 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:58:28,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1570064813, now seen corresponding path program 1 times [2024-11-24 01:58:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:58:28,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647937664] [2024-11-24 01:58:28,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:58:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:29,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:58:29,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647937664] [2024-11-24 01:58:29,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647937664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:58:29,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206417617] [2024-11-24 01:58:29,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:29,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:29,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:29,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:29,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:58:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:29,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 01:58:29,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:31,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:58:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206417617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:58:33,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:58:33,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 43 [2024-11-24 01:58:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352367893] [2024-11-24 01:58:33,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:58:33,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 01:58:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:58:33,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 01:58:33,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 01:58:33,781 INFO L87 Difference]: Start difference. First operand 22928 states and 27895 transitions. Second operand has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 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 01:58:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:39,869 INFO L93 Difference]: Finished difference Result 43534 states and 52694 transitions. [2024-11-24 01:58:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 01:58:39,870 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 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 107 [2024-11-24 01:58:39,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:39,890 INFO L225 Difference]: With dead ends: 43534 [2024-11-24 01:58:39,890 INFO L226 Difference]: Without dead ends: 26514 [2024-11-24 01:58:39,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1021, Invalid=4235, Unknown=0, NotChecked=0, Total=5256 [2024-11-24 01:58:39,899 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 22672 mSDsluCounter, 19139 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22672 SdHoareTripleChecker+Valid, 20714 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:39,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22672 Valid, 20714 Invalid, 1258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:58:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26514 states. [2024-11-24 01:58:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26514 to 26345. [2024-11-24 01:58:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26345 states, 26343 states have (on average 1.2107580761492616) internal successors, (31895), 26344 states have internal predecessors, (31895), 0 states have call successors, (0), 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 01:58:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26345 states to 26345 states and 31895 transitions. [2024-11-24 01:58:42,495 INFO L78 Accepts]: Start accepts. Automaton has 26345 states and 31895 transitions. Word has length 107 [2024-11-24 01:58:42,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:42,496 INFO L471 AbstractCegarLoop]: Abstraction has 26345 states and 31895 transitions. [2024-11-24 01:58:42,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 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 01:58:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 26345 states and 31895 transitions. [2024-11-24 01:58:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 01:58:42,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:42,497 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 01:58:42,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 01:58:42,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:42,698 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:58:42,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1360080118, now seen corresponding path program 1 times [2024-11-24 01:58:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:58:42,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529212078] [2024-11-24 01:58:42,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:42,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:58:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:45,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:58:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529212078] [2024-11-24 01:58:45,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529212078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:58:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842637949] [2024-11-24 01:58:45,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:45,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:58:45,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:58:45,255 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:58:45,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:58:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:45,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 01:58:45,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:58:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:49,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:58:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:58:53,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842637949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:58:53,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:58:53,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 19] total 61 [2024-11-24 01:58:53,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159290625] [2024-11-24 01:58:53,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:58:53,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-24 01:58:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:58:53,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-24 01:58:53,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3417, Unknown=0, NotChecked=0, Total=3660 [2024-11-24 01:58:53,578 INFO L87 Difference]: Start difference. First operand 26345 states and 31895 transitions. Second operand has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:59:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:28,734 INFO L93 Difference]: Finished difference Result 48560 states and 58511 transitions. [2024-11-24 01:59:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-24 01:59:28,735 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-24 01:59:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:28,769 INFO L225 Difference]: With dead ends: 48560 [2024-11-24 01:59:28,769 INFO L226 Difference]: Without dead ends: 40040 [2024-11-24 01:59:28,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9504 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=5157, Invalid=29253, Unknown=0, NotChecked=0, Total=34410 [2024-11-24 01:59:28,778 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 27768 mSDsluCounter, 40596 mSDsCounter, 0 mSdLazyCounter, 4108 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27768 SdHoareTripleChecker+Valid, 42248 SdHoareTripleChecker+Invalid, 4255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 4108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:28,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27768 Valid, 42248 Invalid, 4255 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [147 Valid, 4108 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 01:59:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40040 states. [2024-11-24 01:59:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40040 to 25354. [2024-11-24 01:59:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25354 states, 25352 states have (on average 1.2105948248658882) internal successors, (30691), 25353 states have internal predecessors, (30691), 0 states have call successors, (0), 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 01:59:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25354 states to 25354 states and 30691 transitions. [2024-11-24 01:59:32,140 INFO L78 Accepts]: Start accepts. Automaton has 25354 states and 30691 transitions. Word has length 108 [2024-11-24 01:59:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:32,140 INFO L471 AbstractCegarLoop]: Abstraction has 25354 states and 30691 transitions. [2024-11-24 01:59:32,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:59:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 25354 states and 30691 transitions. [2024-11-24 01:59:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 01:59:32,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:32,142 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-24 01:59:32,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 01:59:32,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-24 01:59:32,343 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:32,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1868806128, now seen corresponding path program 1 times [2024-11-24 01:59:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965527504] [2024-11-24 01:59:32,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:59:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965527504] [2024-11-24 01:59:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965527504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:59:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398949008] [2024-11-24 01:59:33,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:33,538 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:33,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:59:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:33,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 01:59:33,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:35,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:59:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398949008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:59:40,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:59:40,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 43 [2024-11-24 01:59:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333963716] [2024-11-24 01:59:40,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:59:40,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 01:59:40,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:59:40,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 01:59:40,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 01:59:40,020 INFO L87 Difference]: Start difference. First operand 25354 states and 30691 transitions. Second operand has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 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 02:00:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:00:02,626 INFO L93 Difference]: Finished difference Result 52529 states and 63122 transitions. [2024-11-24 02:00:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-24 02:00:02,627 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 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 108 [2024-11-24 02:00:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:00:02,674 INFO L225 Difference]: With dead ends: 52529 [2024-11-24 02:00:02,674 INFO L226 Difference]: Without dead ends: 34403 [2024-11-24 02:00:02,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6714 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=3549, Invalid=19707, Unknown=0, NotChecked=0, Total=23256 [2024-11-24 02:00:02,692 INFO L435 NwaCegarLoop]: 1625 mSDtfsCounter, 20981 mSDsluCounter, 25845 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20981 SdHoareTripleChecker+Valid, 27470 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:00:02,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20981 Valid, 27470 Invalid, 2562 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 02:00:02,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34403 states. [2024-11-24 02:00:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34403 to 32034. [2024-11-24 02:00:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32034 states, 32032 states have (on average 1.2010177322677322) internal successors, (38471), 32033 states have internal predecessors, (38471), 0 states have call successors, (0), 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 02:00:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32034 states to 32034 states and 38471 transitions. [2024-11-24 02:00:06,617 INFO L78 Accepts]: Start accepts. Automaton has 32034 states and 38471 transitions. Word has length 108 [2024-11-24 02:00:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:00:06,618 INFO L471 AbstractCegarLoop]: Abstraction has 32034 states and 38471 transitions. [2024-11-24 02:00:06,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 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 02:00:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 32034 states and 38471 transitions. [2024-11-24 02:00:06,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 02:00:06,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:00:06,619 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 02:00:06,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 02:00:06,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-24 02:00:06,819 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:00:06,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:00:06,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1776708174, now seen corresponding path program 1 times [2024-11-24 02:00:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:00:06,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462579314] [2024-11-24 02:00:06,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:00:06,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:00:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:00:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:00:08,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:00:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462579314] [2024-11-24 02:00:08,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462579314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:00:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523531888] [2024-11-24 02:00:08,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:00:08,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:00:08,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:00:08,984 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:00:08,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 02:00:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:00:09,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-24 02:00:09,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:00:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 42 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:00:14,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:00:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:00:25,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523531888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:00:25,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:00:25,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 27] total 75 [2024-11-24 02:00:25,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650753179] [2024-11-24 02:00:25,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:00:25,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-24 02:00:25,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:00:25,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-24 02:00:25,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=5044, Unknown=0, NotChecked=0, Total=5550 [2024-11-24 02:00:25,167 INFO L87 Difference]: Start difference. First operand 32034 states and 38471 transitions. Second operand has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:01:50,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:01:50,273 INFO L93 Difference]: Finished difference Result 62809 states and 74906 transitions. [2024-11-24 02:01:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2024-11-24 02:01:50,274 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-24 02:01:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:01:50,312 INFO L225 Difference]: With dead ends: 62809 [2024-11-24 02:01:50,312 INFO L226 Difference]: Without dead ends: 48929 [2024-11-24 02:01:50,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46582 ImplicationChecksByTransitivity, 77.7s TimeCoverageRelationStatistics Valid=18100, Invalid=97840, Unknown=0, NotChecked=0, Total=115940 [2024-11-24 02:01:50,328 INFO L435 NwaCegarLoop]: 1692 mSDtfsCounter, 23324 mSDsluCounter, 39143 mSDsCounter, 0 mSdLazyCounter, 5736 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23324 SdHoareTripleChecker+Valid, 40835 SdHoareTripleChecker+Invalid, 5998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 5736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:01:50,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23324 Valid, 40835 Invalid, 5998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [262 Valid, 5736 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-24 02:01:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48929 states. [2024-11-24 02:01:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48929 to 33692. [2024-11-24 02:01:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33692 states, 33690 states have (on average 1.2008014247551202) internal successors, (40455), 33691 states have internal predecessors, (40455), 0 states have call successors, (0), 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 02:01:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33692 states to 33692 states and 40455 transitions. [2024-11-24 02:01:55,195 INFO L78 Accepts]: Start accepts. Automaton has 33692 states and 40455 transitions. Word has length 108 [2024-11-24 02:01:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:01:55,196 INFO L471 AbstractCegarLoop]: Abstraction has 33692 states and 40455 transitions. [2024-11-24 02:01:55,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:01:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 33692 states and 40455 transitions. [2024-11-24 02:01:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-24 02:01:55,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:01:55,198 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:01:55,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 02:01:55,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-24 02:01:55,398 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:01:55,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:01:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash -449704013, now seen corresponding path program 1 times [2024-11-24 02:01:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:01:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522121540] [2024-11-24 02:01:55,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:01:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:01:55,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:01:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522121540] [2024-11-24 02:01:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522121540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:01:55,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:01:55,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:01:55,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994252834] [2024-11-24 02:01:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:01:55,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:01:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:01:55,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:01:55,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:01:55,460 INFO L87 Difference]: Start difference. First operand 33692 states and 40455 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:02:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:03,504 INFO L93 Difference]: Finished difference Result 36700 states and 45287 transitions. [2024-11-24 02:02:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:02:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2024-11-24 02:02:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:03,545 INFO L225 Difference]: With dead ends: 36700 [2024-11-24 02:02:03,545 INFO L226 Difference]: Without dead ends: 35196 [2024-11-24 02:02:03,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:02:03,552 INFO L435 NwaCegarLoop]: 646 mSDtfsCounter, 985 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:02:03,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 653 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-24 02:02:03,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35196 states. [2024-11-24 02:02:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35196 to 35194. [2024-11-24 02:02:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35194 states, 35192 states have (on average 1.2055580813821323) internal successors, (42426), 35193 states have internal predecessors, (42426), 0 states have call successors, (0), 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 02:02:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35194 states to 35194 states and 42426 transitions. [2024-11-24 02:02:07,730 INFO L78 Accepts]: Start accepts. Automaton has 35194 states and 42426 transitions. Word has length 138 [2024-11-24 02:02:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:07,730 INFO L471 AbstractCegarLoop]: Abstraction has 35194 states and 42426 transitions. [2024-11-24 02:02:07,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:02:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 35194 states and 42426 transitions. [2024-11-24 02:02:07,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 02:02:07,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:07,733 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:07,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-24 02:02:07,733 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:07,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 289672907, now seen corresponding path program 1 times [2024-11-24 02:02:07,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:07,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337691060] [2024-11-24 02:02:07,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:07,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 67 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:02:09,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:09,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337691060] [2024-11-24 02:02:09,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337691060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:02:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880701868] [2024-11-24 02:02:09,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:09,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:02:09,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:02:09,327 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:02:09,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 02:02:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:09,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 02:02:09,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:02:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 80 proven. 147 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 02:02:10,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:02:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 190 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 02:02:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880701868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:02:13,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:02:13,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 43 [2024-11-24 02:02:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189019684] [2024-11-24 02:02:13,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:02:13,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-24 02:02:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:13,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-24 02:02:13,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 02:02:13,177 INFO L87 Difference]: Start difference. First operand 35194 states and 42426 transitions. Second operand has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 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 02:02:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:29,343 INFO L93 Difference]: Finished difference Result 48595 states and 58512 transitions. [2024-11-24 02:02:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-24 02:02:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 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 146 [2024-11-24 02:02:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:29,371 INFO L225 Difference]: With dead ends: 48595 [2024-11-24 02:02:29,371 INFO L226 Difference]: Without dead ends: 35288 [2024-11-24 02:02:29,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4283 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3290, Invalid=13480, Unknown=0, NotChecked=0, Total=16770 [2024-11-24 02:02:29,381 INFO L435 NwaCegarLoop]: 1585 mSDtfsCounter, 33480 mSDsluCounter, 18074 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33480 SdHoareTripleChecker+Valid, 19659 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:02:29,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33480 Valid, 19659 Invalid, 2072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 02:02:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35288 states. [2024-11-24 02:02:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35288 to 23549. [2024-11-24 02:02:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23549 states, 23547 states have (on average 1.21123710026755) internal successors, (28521), 23548 states have internal predecessors, (28521), 0 states have call successors, (0), 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 02:02:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23549 states to 23549 states and 28521 transitions. [2024-11-24 02:02:34,304 INFO L78 Accepts]: Start accepts. Automaton has 23549 states and 28521 transitions. Word has length 146 [2024-11-24 02:02:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:34,305 INFO L471 AbstractCegarLoop]: Abstraction has 23549 states and 28521 transitions. [2024-11-24 02:02:34,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 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 02:02:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 23549 states and 28521 transitions. [2024-11-24 02:02:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 02:02:34,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:34,308 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1] [2024-11-24 02:02:34,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 02:02:34,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-24 02:02:34,508 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:34,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:34,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1444097760, now seen corresponding path program 1 times [2024-11-24 02:02:34,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:34,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120655451] [2024-11-24 02:02:34,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:34,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:02:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120655451] [2024-11-24 02:02:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120655451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:02:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449445477] [2024-11-24 02:02:36,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:02:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:02:36,463 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:02:36,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 02:02:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:36,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-24 02:02:36,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:02:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 57 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:02:40,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:02:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:02:46,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449445477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:02:46,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:02:46,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 67 [2024-11-24 02:02:46,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886790241] [2024-11-24 02:02:46,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:02:46,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-24 02:02:46,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:46,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-24 02:02:46,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4065, Unknown=0, NotChecked=0, Total=4422 [2024-11-24 02:02:46,764 INFO L87 Difference]: Start difference. First operand 23549 states and 28521 transitions. Second operand has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 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 02:03:22,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:03:22,235 INFO L93 Difference]: Finished difference Result 34635 states and 41585 transitions. [2024-11-24 02:03:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-24 02:03:22,236 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 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 147 [2024-11-24 02:03:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:03:22,260 INFO L225 Difference]: With dead ends: 34635 [2024-11-24 02:03:22,260 INFO L226 Difference]: Without dead ends: 18175 [2024-11-24 02:03:22,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11983 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=7429, Invalid=32371, Unknown=0, NotChecked=0, Total=39800 [2024-11-24 02:03:22,271 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 44797 mSDsluCounter, 28271 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44797 SdHoareTripleChecker+Valid, 29869 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:03:22,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44797 Valid, 29869 Invalid, 3570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 02:03:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18175 states. [2024-11-24 02:03:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18175 to 16529. [2024-11-24 02:03:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16529 states, 16527 states have (on average 1.2261753494282084) internal successors, (20265), 16528 states have internal predecessors, (20265), 0 states have call successors, (0), 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 02:03:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16529 states to 16529 states and 20265 transitions. [2024-11-24 02:03:24,721 INFO L78 Accepts]: Start accepts. Automaton has 16529 states and 20265 transitions. Word has length 147 [2024-11-24 02:03:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:03:24,722 INFO L471 AbstractCegarLoop]: Abstraction has 16529 states and 20265 transitions. [2024-11-24 02:03:24,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 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 02:03:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 16529 states and 20265 transitions. [2024-11-24 02:03:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 02:03:24,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:03:24,724 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2024-11-24 02:03:24,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 02:03:24,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:03:24,925 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:03:24,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:03:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1800837796, now seen corresponding path program 1 times [2024-11-24 02:03:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:03:24,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017468701] [2024-11-24 02:03:24,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:03:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:03:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:03:28,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:03:28,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017468701] [2024-11-24 02:03:28,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017468701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:03:28,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459922894] [2024-11-24 02:03:28,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:28,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:03:28,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:03:28,992 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:03:28,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 02:03:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:03:29,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-24 02:03:29,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:03:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 73 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:03:34,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:03:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:03:43,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459922894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:03:43,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:03:43,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 27] total 85 [2024-11-24 02:03:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280996888] [2024-11-24 02:03:43,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:03:43,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-24 02:03:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:03:43,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-24 02:03:43,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=6643, Unknown=0, NotChecked=0, Total=7140 [2024-11-24 02:03:43,327 INFO L87 Difference]: Start difference. First operand 16529 states and 20265 transitions. Second operand has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 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 02:04:56,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:56,441 INFO L93 Difference]: Finished difference Result 19137 states and 23318 transitions. [2024-11-24 02:04:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-24 02:04:56,441 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 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 147 [2024-11-24 02:04:56,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:56,458 INFO L225 Difference]: With dead ends: 19137 [2024-11-24 02:04:56,458 INFO L226 Difference]: Without dead ends: 17487 [2024-11-24 02:04:56,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14063 ImplicationChecksByTransitivity, 69.2s TimeCoverageRelationStatistics Valid=7771, Invalid=39101, Unknown=0, NotChecked=0, Total=46872 [2024-11-24 02:04:56,464 INFO L435 NwaCegarLoop]: 1606 mSDtfsCounter, 53751 mSDsluCounter, 47555 mSDsCounter, 0 mSdLazyCounter, 5559 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53751 SdHoareTripleChecker+Valid, 49161 SdHoareTripleChecker+Invalid, 5893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 5559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:56,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53751 Valid, 49161 Invalid, 5893 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [334 Valid, 5559 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-24 02:04:56,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17487 states. [2024-11-24 02:04:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17487 to 16927. [2024-11-24 02:04:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16927 states, 16925 states have (on average 1.2254652880354504) internal successors, (20741), 16926 states have internal predecessors, (20741), 0 states have call successors, (0), 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 02:04:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16927 states to 16927 states and 20741 transitions. [2024-11-24 02:04:59,226 INFO L78 Accepts]: Start accepts. Automaton has 16927 states and 20741 transitions. Word has length 147 [2024-11-24 02:04:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:59,226 INFO L471 AbstractCegarLoop]: Abstraction has 16927 states and 20741 transitions. [2024-11-24 02:04:59,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 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 02:04:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 16927 states and 20741 transitions. [2024-11-24 02:04:59,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 02:04:59,229 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:59,229 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2024-11-24 02:04:59,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 02:04:59,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 02:04:59,430 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:04:59,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:59,430 INFO L85 PathProgramCache]: Analyzing trace with hash 355894557, now seen corresponding path program 1 times [2024-11-24 02:04:59,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:59,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738002523] [2024-11-24 02:04:59,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:59,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:01,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:01,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738002523] [2024-11-24 02:05:01,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738002523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:01,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189185588] [2024-11-24 02:05:01,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:01,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:01,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:01,229 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:01,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 02:05:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:01,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-24 02:05:01,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:04,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189185588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:08,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:08,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 18] total 60 [2024-11-24 02:05:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097517961] [2024-11-24 02:05:08,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:08,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 02:05:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:08,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 02:05:08,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3287, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 02:05:08,815 INFO L87 Difference]: Start difference. First operand 16927 states and 20741 transitions. Second operand has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 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 02:05:32,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:32,034 INFO L93 Difference]: Finished difference Result 17168 states and 20991 transitions. [2024-11-24 02:05:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-24 02:05:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 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 148 [2024-11-24 02:05:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:32,042 INFO L225 Difference]: With dead ends: 17168 [2024-11-24 02:05:32,042 INFO L226 Difference]: Without dead ends: 6196 [2024-11-24 02:05:32,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8491 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=5908, Invalid=25954, Unknown=0, NotChecked=0, Total=31862 [2024-11-24 02:05:32,049 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 33014 mSDsluCounter, 28354 mSDsCounter, 0 mSdLazyCounter, 3505 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33014 SdHoareTripleChecker+Valid, 29934 SdHoareTripleChecker+Invalid, 3593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:32,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33014 Valid, 29934 Invalid, 3593 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3505 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 02:05:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6196 states. [2024-11-24 02:05:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6196 to 5573. [2024-11-24 02:05:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5573 states, 5571 states have (on average 1.3114342128881709) internal successors, (7306), 5572 states have internal predecessors, (7306), 0 states have call successors, (0), 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 02:05:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5573 states to 5573 states and 7306 transitions. [2024-11-24 02:05:32,535 INFO L78 Accepts]: Start accepts. Automaton has 5573 states and 7306 transitions. Word has length 148 [2024-11-24 02:05:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:32,535 INFO L471 AbstractCegarLoop]: Abstraction has 5573 states and 7306 transitions. [2024-11-24 02:05:32,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 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 02:05:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states and 7306 transitions. [2024-11-24 02:05:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 02:05:32,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:32,537 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 1] [2024-11-24 02:05:32,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 02:05:32,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 02:05:32,737 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:32,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -970975155, now seen corresponding path program 1 times [2024-11-24 02:05:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787365044] [2024-11-24 02:05:32,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 02:05:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787365044] [2024-11-24 02:05:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787365044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228317905] [2024-11-24 02:05:32,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:32,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:32,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:32,898 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:32,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 02:05:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:33,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 02:05:33,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 02:05:33,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:05:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 92 proven. 134 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 02:05:33,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228317905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:05:33,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:05:33,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-11-24 02:05:33,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118352286] [2024-11-24 02:05:33,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:05:33,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 02:05:33,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:33,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 02:05:33,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:05:33,889 INFO L87 Difference]: Start difference. First operand 5573 states and 7306 transitions. Second operand has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 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 02:05:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:34,807 INFO L93 Difference]: Finished difference Result 10041 states and 12679 transitions. [2024-11-24 02:05:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 02:05:34,807 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 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 148 [2024-11-24 02:05:34,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:34,815 INFO L225 Difference]: With dead ends: 10041 [2024-11-24 02:05:34,815 INFO L226 Difference]: Without dead ends: 7958 [2024-11-24 02:05:34,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-24 02:05:34,817 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 1730 mSDsluCounter, 4872 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:34,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 6448 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:05:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7958 states. [2024-11-24 02:05:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7958 to 7801. [2024-11-24 02:05:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7801 states, 7799 states have (on average 1.2418258751121938) internal successors, (9685), 7800 states have internal predecessors, (9685), 0 states have call successors, (0), 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 02:05:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 9685 transitions. [2024-11-24 02:05:35,512 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 9685 transitions. Word has length 148 [2024-11-24 02:05:35,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:35,512 INFO L471 AbstractCegarLoop]: Abstraction has 7801 states and 9685 transitions. [2024-11-24 02:05:35,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 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 02:05:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 9685 transitions. [2024-11-24 02:05:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-24 02:05:35,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:35,513 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1] [2024-11-24 02:05:35,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 02:05:35,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 02:05:35,714 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:35,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2046949756, now seen corresponding path program 1 times [2024-11-24 02:05:35,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:35,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533416746] [2024-11-24 02:05:35,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:35,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-24 02:05:35,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533416746] [2024-11-24 02:05:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533416746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 02:05:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995438551] [2024-11-24 02:05:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:35,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:05:35,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:35,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:05:35,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:05:35,828 INFO L87 Difference]: Start difference. First operand 7801 states and 9685 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:36,550 INFO L93 Difference]: Finished difference Result 8758 states and 10742 transitions. [2024-11-24 02:05:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:05:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-24 02:05:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:36,557 INFO L225 Difference]: With dead ends: 8758 [2024-11-24 02:05:36,557 INFO L226 Difference]: Without dead ends: 7320 [2024-11-24 02:05:36,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:05:36,559 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 3020 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3020 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:36,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3020 Valid, 3107 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:05:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2024-11-24 02:05:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 7086. [2024-11-24 02:05:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7086 states, 7084 states have (on average 1.2504234895539243) internal successors, (8858), 7085 states have internal predecessors, (8858), 0 states have call successors, (0), 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 02:05:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7086 states to 7086 states and 8858 transitions. [2024-11-24 02:05:37,173 INFO L78 Accepts]: Start accepts. Automaton has 7086 states and 8858 transitions. Word has length 149 [2024-11-24 02:05:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:37,173 INFO L471 AbstractCegarLoop]: Abstraction has 7086 states and 8858 transitions. [2024-11-24 02:05:37,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:05:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7086 states and 8858 transitions. [2024-11-24 02:05:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-24 02:05:37,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:37,175 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 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 02:05:37,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-24 02:05:37,175 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:37,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1345885178, now seen corresponding path program 1 times [2024-11-24 02:05:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:37,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215510615] [2024-11-24 02:05:37,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215510615] [2024-11-24 02:05:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215510615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543750367] [2024-11-24 02:05:38,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:38,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:38,687 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:38,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc41f340-0ce3-4936-8a4b-10bfbe39848d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 02:05:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:38,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 02:05:38,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:05:41,029 INFO L312 TraceCheckSpWp]: Computing backward predicates...