./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB --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 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:45:37,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:45:37,163 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:45:37,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:45:37,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:45:37,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:45:37,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:45:37,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:45:37,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:45:37,202 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:45:37,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:45:37,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:45:37,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:45:37,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:45:37,203 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:45:37,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:45:37,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:45:37,204 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:45:37,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:45:37,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:45:37,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:45:37,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:45:37,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:45:37,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:45:37,205 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:45:37,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:45:37,205 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:45:37,205 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:45:37,205 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:45:37,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:37,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:37,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:37,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:37,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:45:37,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:37,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:37,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:37,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:37,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:45:37,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:45:37,207 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:45:37,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:45:37,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:45:37,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:45:37,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:45:37,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:45:37,208 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:45:37,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:45:37,208 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_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 [2024-11-28 04:45:37,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:45:37,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:45:37,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:45:37,594 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:45:37,595 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:45:37,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-28 04:45:41,299 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/data/a4078dd39/27363d9444c4402595686253f9b6c0fa/FLAG2f7c8b463 [2024-11-28 04:45:41,769 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:45:41,770 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-28 04:45:41,794 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/data/a4078dd39/27363d9444c4402595686253f9b6c0fa/FLAG2f7c8b463 [2024-11-28 04:45:41,824 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/data/a4078dd39/27363d9444c4402595686253f9b6c0fa [2024-11-28 04:45:41,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:45:41,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:45:41,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:41,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:45:41,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:45:41,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:41" (1/1) ... [2024-11-28 04:45:41,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2a3b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:41, skipping insertion in model container [2024-11-28 04:45:41,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:41" (1/1) ... [2024-11-28 04:45:41,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:45:42,226 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_e52ff67e-115b-4378-b7a5-ec600bb1c444/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2024-11-28 04:45:42,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:42,246 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:45:42,319 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_e52ff67e-115b-4378-b7a5-ec600bb1c444/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2024-11-28 04:45:42,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:42,340 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:45:42,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42 WrapperNode [2024-11-28 04:45:42,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:42,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:42,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:45:42,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:45:42,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,407 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 418 [2024-11-28 04:45:42,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:42,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:45:42,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:45:42,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:45:42,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,426 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,445 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]. [2024-11-28 04:45:42,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,457 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:45:42,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:45:42,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:45:42,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:45:42,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (1/1) ... [2024-11-28 04:45:42,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:42,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:42,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:45:42,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:45:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:45:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2024-11-28 04:45:42,572 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2024-11-28 04:45:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-28 04:45:42,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-28 04:45:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2024-11-28 04:45:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2024-11-28 04:45:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2024-11-28 04:45:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2024-11-28 04:45:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2024-11-28 04:45:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2024-11-28 04:45:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:45:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:45:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:45:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:45:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:45:42,747 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:45:42,749 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:45:43,652 INFO L? ?]: Removed 102 outVars from TransFormulas that were not future-live. [2024-11-28 04:45:43,652 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:45:43,679 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:45:43,680 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:45:43,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:43 BoogieIcfgContainer [2024-11-28 04:45:43,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:45:43,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:45:43,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:45:43,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:45:43,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:45:41" (1/3) ... [2024-11-28 04:45:43,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb559ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:43, skipping insertion in model container [2024-11-28 04:45:43,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:42" (2/3) ... [2024-11-28 04:45:43,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb559ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:43, skipping insertion in model container [2024-11-28 04:45:43,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:43" (3/3) ... [2024-11-28 04:45:43,702 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-28 04:45:43,723 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:45:43,726 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c that has 7 procedures, 178 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:45:43,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:45:43,847 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;@171a5a8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:45:43,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:45:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 133 states have (on average 1.586466165413534) internal successors, (211), 138 states have internal predecessors, (211), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-28 04:45:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:45:43,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:43,865 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:43,865 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:43,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -990425789, now seen corresponding path program 1 times [2024-11-28 04:45:43,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:43,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737441564] [2024-11-28 04:45:43,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:44,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:44,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737441564] [2024-11-28 04:45:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737441564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:44,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:44,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:44,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412860729] [2024-11-28 04:45:44,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:44,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:44,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:44,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:44,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:44,440 INFO L87 Difference]: Start difference. First operand has 178 states, 133 states have (on average 1.586466165413534) internal successors, (211), 138 states have internal predecessors, (211), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:44,662 INFO L93 Difference]: Finished difference Result 355 states and 608 transitions. [2024-11-28 04:45:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:44,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 04:45:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:44,680 INFO L225 Difference]: With dead ends: 355 [2024-11-28 04:45:44,682 INFO L226 Difference]: Without dead ends: 180 [2024-11-28 04:45:44,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:44,697 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 7 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:44,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 803 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-28 04:45:44,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-28 04:45:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 135 states have (on average 1.5555555555555556) internal successors, (210), 139 states have internal predecessors, (210), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-28 04:45:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 284 transitions. [2024-11-28 04:45:44,764 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 284 transitions. Word has length 15 [2024-11-28 04:45:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:44,764 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 284 transitions. [2024-11-28 04:45:44,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 284 transitions. [2024-11-28 04:45:44,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:45:44,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:44,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:44,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:45:44,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:44,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1702670267, now seen corresponding path program 1 times [2024-11-28 04:45:44,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:44,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034505438] [2024-11-28 04:45:44,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:45,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:45,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034505438] [2024-11-28 04:45:45,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034505438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:45,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:45,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:45,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005244008] [2024-11-28 04:45:45,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:45,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:45,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:45,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:45,066 INFO L87 Difference]: Start difference. First operand 180 states and 284 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:45,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:45,186 INFO L93 Difference]: Finished difference Result 373 states and 591 transitions. [2024-11-28 04:45:45,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:45,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 04:45:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:45,190 INFO L225 Difference]: With dead ends: 373 [2024-11-28 04:45:45,191 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 04:45:45,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:45,194 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 25 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:45,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 819 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 04:45:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-28 04:45:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.5342465753424657) internal successors, (224), 150 states have internal predecessors, (224), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 04:45:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 300 transitions. [2024-11-28 04:45:45,226 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 300 transitions. Word has length 16 [2024-11-28 04:45:45,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:45,226 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 300 transitions. [2024-11-28 04:45:45,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:45,226 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 300 transitions. [2024-11-28 04:45:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 04:45:45,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:45,228 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:45,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:45:45,228 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:45,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:45,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1283584726, now seen corresponding path program 1 times [2024-11-28 04:45:45,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:45,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028076330] [2024-11-28 04:45:45,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:45,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:45,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028076330] [2024-11-28 04:45:45,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028076330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:45,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:45,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:45:45,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206785879] [2024-11-28 04:45:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:45,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:45,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:45,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:45,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:45,364 INFO L87 Difference]: Start difference. First operand 193 states and 300 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:45:45,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:45,415 INFO L93 Difference]: Finished difference Result 405 states and 637 transitions. [2024-11-28 04:45:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:45,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-28 04:45:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:45,420 INFO L225 Difference]: With dead ends: 405 [2024-11-28 04:45:45,421 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 04:45:45,422 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 [2024-11-28 04:45:45,423 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 22 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 550 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 [2024-11-28 04:45:45,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 550 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 04:45:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 195. [2024-11-28 04:45:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 148 states have (on average 1.527027027027027) internal successors, (226), 152 states have internal predecessors, (226), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 04:45:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2024-11-28 04:45:45,450 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 24 [2024-11-28 04:45:45,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:45,450 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2024-11-28 04:45:45,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:45:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2024-11-28 04:45:45,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 04:45:45,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:45,452 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:45:45,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:45:45,452 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:45,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:45,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1169101943, now seen corresponding path program 1 times [2024-11-28 04:45:45,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:45,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379257133] [2024-11-28 04:45:45,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:45,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:45,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:45,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379257133] [2024-11-28 04:45:45,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379257133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:45,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:45,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:45:45,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192759544] [2024-11-28 04:45:45,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:45,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:45:45,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:45,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:45:45,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:45,625 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:45:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:45,698 INFO L93 Difference]: Finished difference Result 380 states and 593 transitions. [2024-11-28 04:45:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:45,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-28 04:45:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:45,702 INFO L225 Difference]: With dead ends: 380 [2024-11-28 04:45:45,702 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 04:45:45,704 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 [2024-11-28 04:45:45,705 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:45,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1094 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 04:45:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-28 04:45:45,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 151 states have (on average 1.5165562913907285) internal successors, (229), 155 states have internal predecessors, (229), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2024-11-28 04:45:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 306 transitions. [2024-11-28 04:45:45,747 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 306 transitions. Word has length 32 [2024-11-28 04:45:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:45,748 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 306 transitions. [2024-11-28 04:45:45,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:45:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 306 transitions. [2024-11-28 04:45:45,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:45:45,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:45,750 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] [2024-11-28 04:45:45,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:45:45,750 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:45,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:45,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2121673051, now seen corresponding path program 1 times [2024-11-28 04:45:45,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:45,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280128636] [2024-11-28 04:45:45,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:46,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:46,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280128636] [2024-11-28 04:45:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280128636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:46,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:46,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:45:46,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779579203] [2024-11-28 04:45:46,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:46,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:45:46,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:46,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:45:46,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:46,012 INFO L87 Difference]: Start difference. First operand 199 states and 306 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:45:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:46,157 INFO L93 Difference]: Finished difference Result 343 states and 534 transitions. [2024-11-28 04:45:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:45:46,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-28 04:45:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:46,161 INFO L225 Difference]: With dead ends: 343 [2024-11-28 04:45:46,161 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 04:45:46,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:46,163 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:46,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 04:45:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-28 04:45:46,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 148 states have (on average 1.4932432432432432) internal successors, (221), 152 states have internal predecessors, (221), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 04:45:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 297 transitions. [2024-11-28 04:45:46,186 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 297 transitions. Word has length 35 [2024-11-28 04:45:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:46,186 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 297 transitions. [2024-11-28 04:45:46,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:45:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 297 transitions. [2024-11-28 04:45:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:45:46,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:46,188 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:45:46,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:45:46,189 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:46,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1881131524, now seen corresponding path program 1 times [2024-11-28 04:45:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319791032] [2024-11-28 04:45:46,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:46,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:46,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319791032] [2024-11-28 04:45:46,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319791032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:46,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487328297] [2024-11-28 04:45:46,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:46,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:46,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:46,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:45:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:46,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:45:46,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:46,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:46,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487328297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:46,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:46,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-28 04:45:46,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582223536] [2024-11-28 04:45:46,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:46,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:45:46,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:46,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:45:46,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:46,703 INFO L87 Difference]: Start difference. First operand 195 states and 297 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:45:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:46,806 INFO L93 Difference]: Finished difference Result 438 states and 681 transitions. [2024-11-28 04:45:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:46,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-28 04:45:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:46,810 INFO L225 Difference]: With dead ends: 438 [2024-11-28 04:45:46,810 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 04:45:46,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:46,817 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 94 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:46,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 804 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 04:45:46,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2024-11-28 04:45:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 191 states have (on average 1.4659685863874345) internal successors, (280), 195 states have internal predecessors, (280), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 04:45:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 376 transitions. [2024-11-28 04:45:46,862 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 376 transitions. Word has length 35 [2024-11-28 04:45:46,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:46,862 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 376 transitions. [2024-11-28 04:45:46,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:45:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 376 transitions. [2024-11-28 04:45:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 04:45:46,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:46,868 INFO L218 NwaCegarLoop]: trace histogram [4, 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] [2024-11-28 04:45:46,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:47,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:45:47,069 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:47,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:47,070 INFO L85 PathProgramCache]: Analyzing trace with hash 264200636, now seen corresponding path program 2 times [2024-11-28 04:45:47,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:47,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523664981] [2024-11-28 04:45:47,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:47,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:47,113 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:45:47,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:45:47,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:47,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523664981] [2024-11-28 04:45:47,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523664981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:47,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389373408] [2024-11-28 04:45:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:47,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:47,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:47,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:47,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:47,199 INFO L87 Difference]: Start difference. First operand 248 states and 376 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:45:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:47,319 INFO L93 Difference]: Finished difference Result 465 states and 730 transitions. [2024-11-28 04:45:47,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:47,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-28 04:45:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:47,326 INFO L225 Difference]: With dead ends: 465 [2024-11-28 04:45:47,327 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 04:45:47,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:47,329 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 7 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:47,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 756 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:47,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 04:45:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-28 04:45:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 190 states have (on average 1.4631578947368422) internal successors, (278), 194 states have internal predecessors, (278), 47 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-28 04:45:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 372 transitions. [2024-11-28 04:45:47,372 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 372 transitions. Word has length 57 [2024-11-28 04:45:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:47,374 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 372 transitions. [2024-11-28 04:45:47,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:45:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 372 transitions. [2024-11-28 04:45:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 04:45:47,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:47,378 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-28 04:45:47,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:45:47,379 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:47,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1186474451, now seen corresponding path program 1 times [2024-11-28 04:45:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:47,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889956788] [2024-11-28 04:45:47,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:47,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:45:47,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:47,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889956788] [2024-11-28 04:45:47,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889956788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:47,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:47,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886688083] [2024-11-28 04:45:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:47,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:47,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:47,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:47,563 INFO L87 Difference]: Start difference. First operand 246 states and 372 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:45:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:47,652 INFO L93 Difference]: Finished difference Result 470 states and 728 transitions. [2024-11-28 04:45:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:47,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-28 04:45:47,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:47,656 INFO L225 Difference]: With dead ends: 470 [2024-11-28 04:45:47,656 INFO L226 Difference]: Without dead ends: 253 [2024-11-28 04:45:47,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:47,661 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 8 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:47,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 781 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-28 04:45:47,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-28 04:45:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 200 states have internal predecessors, (286), 47 states have call successors, (47), 9 states have call predecessors, (47), 9 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-28 04:45:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 380 transitions. [2024-11-28 04:45:47,696 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 380 transitions. Word has length 57 [2024-11-28 04:45:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:47,696 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 380 transitions. [2024-11-28 04:45:47,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:45:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 380 transitions. [2024-11-28 04:45:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:45:47,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:47,698 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-28 04:45:47,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:45:47,698 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:47,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:47,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1675858075, now seen corresponding path program 1 times [2024-11-28 04:45:47,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:47,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874287591] [2024-11-28 04:45:47,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:47,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:45:47,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:47,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874287591] [2024-11-28 04:45:47,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874287591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:47,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:47,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:47,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212956391] [2024-11-28 04:45:47,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:47,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:47,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:47,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:47,906 INFO L87 Difference]: Start difference. First operand 253 states and 380 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:45:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:47,989 INFO L93 Difference]: Finished difference Result 516 states and 786 transitions. [2024-11-28 04:45:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-28 04:45:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:47,995 INFO L225 Difference]: With dead ends: 516 [2024-11-28 04:45:47,995 INFO L226 Difference]: Without dead ends: 292 [2024-11-28 04:45:47,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:47,997 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 24 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:47,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 799 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-28 04:45:48,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 289. [2024-11-28 04:45:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 232 states have internal predecessors, (323), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 04:45:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 423 transitions. [2024-11-28 04:45:48,066 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 423 transitions. Word has length 58 [2024-11-28 04:45:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:48,067 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 423 transitions. [2024-11-28 04:45:48,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:45:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 423 transitions. [2024-11-28 04:45:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:45:48,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:48,068 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:48,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:45:48,069 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:48,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash 139669448, now seen corresponding path program 1 times [2024-11-28 04:45:48,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:48,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757384965] [2024-11-28 04:45:48,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 04:45:48,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:48,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757384965] [2024-11-28 04:45:48,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757384965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:48,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:48,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:45:48,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150856376] [2024-11-28 04:45:48,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:48,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:45:48,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:48,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:45:48,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:48,270 INFO L87 Difference]: Start difference. First operand 289 states and 423 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:45:48,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:48,328 INFO L93 Difference]: Finished difference Result 527 states and 785 transitions. [2024-11-28 04:45:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:48,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2024-11-28 04:45:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:48,334 INFO L225 Difference]: With dead ends: 527 [2024-11-28 04:45:48,334 INFO L226 Difference]: Without dead ends: 291 [2024-11-28 04:45:48,335 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 [2024-11-28 04:45:48,337 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:48,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1065 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-28 04:45:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2024-11-28 04:45:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 228 states have (on average 1.4035087719298245) internal successors, (320), 232 states have internal predecessors, (320), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 04:45:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 420 transitions. [2024-11-28 04:45:48,370 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 420 transitions. Word has length 76 [2024-11-28 04:45:48,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:48,370 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 420 transitions. [2024-11-28 04:45:48,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:45:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 420 transitions. [2024-11-28 04:45:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:45:48,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:48,372 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:48,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:45:48,372 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:48,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:48,373 INFO L85 PathProgramCache]: Analyzing trace with hash -356940575, now seen corresponding path program 1 times [2024-11-28 04:45:48,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:48,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532528602] [2024-11-28 04:45:48,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:48,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-28 04:45:48,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:48,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532528602] [2024-11-28 04:45:48,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532528602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:48,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:48,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:48,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892072933] [2024-11-28 04:45:48,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:48,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:48,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:48,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:48,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:48,565 INFO L87 Difference]: Start difference. First operand 289 states and 420 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:45:48,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:48,654 INFO L93 Difference]: Finished difference Result 514 states and 769 transitions. [2024-11-28 04:45:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:48,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2024-11-28 04:45:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:48,657 INFO L225 Difference]: With dead ends: 514 [2024-11-28 04:45:48,658 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 04:45:48,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:48,662 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 764 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 [2024-11-28 04:45:48,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 764 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 04:45:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-28 04:45:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 223 states have (on average 1.3811659192825112) internal successors, (308), 227 states have internal predecessors, (308), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-28 04:45:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 406 transitions. [2024-11-28 04:45:48,699 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 406 transitions. Word has length 105 [2024-11-28 04:45:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:48,700 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 406 transitions. [2024-11-28 04:45:48,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:45:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 406 transitions. [2024-11-28 04:45:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 04:45:48,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:48,705 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:48,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:45:48,705 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:48,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash -365410092, now seen corresponding path program 1 times [2024-11-28 04:45:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707211061] [2024-11-28 04:45:48,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:48,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-11-28 04:45:48,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:48,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707211061] [2024-11-28 04:45:48,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707211061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:48,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018632295] [2024-11-28 04:45:48,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:48,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:48,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:48,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:48,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:45:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:49,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:45:49,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-28 04:45:49,274 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:49,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018632295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:49,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:49,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:45:49,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398071094] [2024-11-28 04:45:49,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:49,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:49,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:49,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:49,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:49,276 INFO L87 Difference]: Start difference. First operand 283 states and 406 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:45:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:49,372 INFO L93 Difference]: Finished difference Result 511 states and 749 transitions. [2024-11-28 04:45:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:49,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 139 [2024-11-28 04:45:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:49,376 INFO L225 Difference]: With dead ends: 511 [2024-11-28 04:45:49,376 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 04:45:49,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:49,378 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 35 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:49,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 720 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 04:45:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-28 04:45:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 209 states have (on average 1.3732057416267942) internal successors, (287), 213 states have internal predecessors, (287), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 04:45:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 379 transitions. [2024-11-28 04:45:49,400 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 379 transitions. Word has length 139 [2024-11-28 04:45:49,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:49,402 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 379 transitions. [2024-11-28 04:45:49,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:45:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 379 transitions. [2024-11-28 04:45:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 04:45:49,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:49,405 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:49,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:45:49,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:45:49,606 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:49,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1186353610, now seen corresponding path program 1 times [2024-11-28 04:45:49,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68226720] [2024-11-28 04:45:49,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:49,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-28 04:45:49,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:49,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68226720] [2024-11-28 04:45:49,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68226720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199512106] [2024-11-28 04:45:49,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:49,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:49,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:49,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:45:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:50,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:45:50,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-28 04:45:50,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:50,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199512106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:50,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:50,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:45:50,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258813931] [2024-11-28 04:45:50,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:50,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:50,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:50,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:50,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:50,100 INFO L87 Difference]: Start difference. First operand 266 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:45:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:50,200 INFO L93 Difference]: Finished difference Result 477 states and 695 transitions. [2024-11-28 04:45:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:50,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 143 [2024-11-28 04:45:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:50,204 INFO L225 Difference]: With dead ends: 477 [2024-11-28 04:45:50,205 INFO L226 Difference]: Without dead ends: 247 [2024-11-28 04:45:50,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:50,207 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 37 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:50,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 716 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-28 04:45:50,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2024-11-28 04:45:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 193 states have (on average 1.3678756476683938) internal successors, (264), 197 states have internal predecessors, (264), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-28 04:45:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 350 transitions. [2024-11-28 04:45:50,227 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 350 transitions. Word has length 143 [2024-11-28 04:45:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:50,227 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 350 transitions. [2024-11-28 04:45:50,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:45:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 350 transitions. [2024-11-28 04:45:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 04:45:50,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:50,231 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:50,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:45:50,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:50,435 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:50,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash -596810665, now seen corresponding path program 1 times [2024-11-28 04:45:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:50,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792999181] [2024-11-28 04:45:50,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-28 04:45:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:50,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792999181] [2024-11-28 04:45:50,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792999181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:50,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351559991] [2024-11-28 04:45:50,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:50,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:50,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:50,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:50,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:45:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:50,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:45:50,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-28 04:45:50,946 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:50,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351559991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:50,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:50,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:45:50,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70049869] [2024-11-28 04:45:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:50,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:50,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:50,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:50,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:50,949 INFO L87 Difference]: Start difference. First operand 247 states and 350 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:45:51,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:51,058 INFO L93 Difference]: Finished difference Result 468 states and 678 transitions. [2024-11-28 04:45:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 146 [2024-11-28 04:45:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:51,062 INFO L225 Difference]: With dead ends: 468 [2024-11-28 04:45:51,062 INFO L226 Difference]: Without dead ends: 279 [2024-11-28 04:45:51,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:51,064 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 33 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:51,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 729 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-28 04:45:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2024-11-28 04:45:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 221 states have (on average 1.3665158371040724) internal successors, (302), 225 states have internal predecessors, (302), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 04:45:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 394 transitions. [2024-11-28 04:45:51,088 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 394 transitions. Word has length 146 [2024-11-28 04:45:51,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:51,089 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 394 transitions. [2024-11-28 04:45:51,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:45:51,089 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 394 transitions. [2024-11-28 04:45:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 04:45:51,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:51,092 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:51,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:45:51,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:51,296 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:51,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1774969279, now seen corresponding path program 2 times [2024-11-28 04:45:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:51,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517446085] [2024-11-28 04:45:51,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:51,334 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:45:51,335 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-28 04:45:51,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:51,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517446085] [2024-11-28 04:45:51,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517446085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:51,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:51,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:51,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833929855] [2024-11-28 04:45:51,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:51,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:51,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:51,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:51,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:51,403 INFO L87 Difference]: Start difference. First operand 279 states and 394 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-28 04:45:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:51,464 INFO L93 Difference]: Finished difference Result 423 states and 613 transitions. [2024-11-28 04:45:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:51,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 146 [2024-11-28 04:45:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:51,467 INFO L225 Difference]: With dead ends: 423 [2024-11-28 04:45:51,467 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 04:45:51,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:45:51,471 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 3 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:51,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 773 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 04:45:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-28 04:45:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 224 states have (on average 1.3616071428571428) internal successors, (305), 228 states have internal predecessors, (305), 46 states have call successors, (46), 12 states have call predecessors, (46), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 04:45:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 397 transitions. [2024-11-28 04:45:51,499 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 397 transitions. Word has length 146 [2024-11-28 04:45:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:51,500 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 397 transitions. [2024-11-28 04:45:51,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-28 04:45:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 397 transitions. [2024-11-28 04:45:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 04:45:51,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:51,503 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:51,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:45:51,504 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:51,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:51,505 INFO L85 PathProgramCache]: Analyzing trace with hash -976665692, now seen corresponding path program 1 times [2024-11-28 04:45:51,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:51,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330772767] [2024-11-28 04:45:51,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:51,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-28 04:45:51,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:51,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330772767] [2024-11-28 04:45:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330772767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:51,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643962931] [2024-11-28 04:45:51,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:51,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:51,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:51,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:51,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:45:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:51,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:45:51,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-28 04:45:52,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643962931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:45:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392258997] [2024-11-28 04:45:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:52,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:52,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:52,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:52,002 INFO L87 Difference]: Start difference. First operand 283 states and 397 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-28 04:45:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:52,054 INFO L93 Difference]: Finished difference Result 432 states and 621 transitions. [2024-11-28 04:45:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:52,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 153 [2024-11-28 04:45:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:52,057 INFO L225 Difference]: With dead ends: 432 [2024-11-28 04:45:52,057 INFO L226 Difference]: Without dead ends: 288 [2024-11-28 04:45:52,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:45:52,058 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 4 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:52,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 775 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-28 04:45:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-28 04:45:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 228 states have (on average 1.355263157894737) internal successors, (309), 232 states have internal predecessors, (309), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 04:45:52,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 401 transitions. [2024-11-28 04:45:52,077 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 401 transitions. Word has length 153 [2024-11-28 04:45:52,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:52,078 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 401 transitions. [2024-11-28 04:45:52,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-28 04:45:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 401 transitions. [2024-11-28 04:45:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 04:45:52,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:52,081 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:52,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:52,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:45:52,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:52,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:52,282 INFO L85 PathProgramCache]: Analyzing trace with hash -111657728, now seen corresponding path program 1 times [2024-11-28 04:45:52,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:52,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598193223] [2024-11-28 04:45:52,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:52,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-28 04:45:52,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:52,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598193223] [2024-11-28 04:45:52,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598193223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:52,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867694801] [2024-11-28 04:45:52,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:52,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:52,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:52,503 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:52,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:45:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:52,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:45:52,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-28 04:45:52,837 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:52,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867694801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:52,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:52,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:45:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342081771] [2024-11-28 04:45:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:52,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:52,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:52,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:52,841 INFO L87 Difference]: Start difference. First operand 288 states and 401 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 04:45:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:52,912 INFO L93 Difference]: Finished difference Result 436 states and 621 transitions. [2024-11-28 04:45:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:52,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 161 [2024-11-28 04:45:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:52,917 INFO L225 Difference]: With dead ends: 436 [2024-11-28 04:45:52,917 INFO L226 Difference]: Without dead ends: 287 [2024-11-28 04:45:52,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:45:52,919 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 5 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:52,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 765 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:52,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-28 04:45:52,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-28 04:45:52,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 228 states have (on average 1.3421052631578947) internal successors, (306), 231 states have internal predecessors, (306), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 04:45:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 396 transitions. [2024-11-28 04:45:52,943 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 396 transitions. Word has length 161 [2024-11-28 04:45:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:52,944 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 396 transitions. [2024-11-28 04:45:52,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 04:45:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 396 transitions. [2024-11-28 04:45:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 04:45:52,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:52,948 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:52,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:53,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:45:53,149 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:53,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1338057840, now seen corresponding path program 1 times [2024-11-28 04:45:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:53,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401234227] [2024-11-28 04:45:53,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-28 04:45:53,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401234227] [2024-11-28 04:45:53,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401234227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:53,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636668172] [2024-11-28 04:45:53,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:53,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:53,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:53,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:53,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:45:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:53,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:45:53,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 04:45:53,723 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:53,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636668172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:53,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:53,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:45:53,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578762086] [2024-11-28 04:45:53,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:53,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:53,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:53,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:53,728 INFO L87 Difference]: Start difference. First operand 287 states and 396 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-28 04:45:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:53,756 INFO L93 Difference]: Finished difference Result 434 states and 610 transitions. [2024-11-28 04:45:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:53,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 168 [2024-11-28 04:45:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:53,760 INFO L225 Difference]: With dead ends: 434 [2024-11-28 04:45:53,760 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 04:45:53,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:53,762 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:53,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 04:45:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-28 04:45:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 228 states have (on average 1.337719298245614) internal successors, (305), 230 states have internal predecessors, (305), 44 states have call successors, (44), 13 states have call predecessors, (44), 13 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 04:45:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 393 transitions. [2024-11-28 04:45:53,786 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 393 transitions. Word has length 168 [2024-11-28 04:45:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:53,787 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 393 transitions. [2024-11-28 04:45:53,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-28 04:45:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 393 transitions. [2024-11-28 04:45:53,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-28 04:45:53,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:53,792 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:53,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:53,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:45:53,996 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:53,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1019610705, now seen corresponding path program 1 times [2024-11-28 04:45:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:53,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507537473] [2024-11-28 04:45:53,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-28 04:45:54,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:54,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507537473] [2024-11-28 04:45:54,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507537473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:54,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573336560] [2024-11-28 04:45:54,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:54,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:54,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:54,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:54,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:45:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:54,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:45:54,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 04:45:54,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:54,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573336560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:54,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:54,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:45:54,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598113699] [2024-11-28 04:45:54,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:54,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:54,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:54,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:54,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:54,594 INFO L87 Difference]: Start difference. First operand 286 states and 393 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 04:45:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:54,783 INFO L93 Difference]: Finished difference Result 651 states and 901 transitions. [2024-11-28 04:45:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:54,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 171 [2024-11-28 04:45:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:54,788 INFO L225 Difference]: With dead ends: 651 [2024-11-28 04:45:54,788 INFO L226 Difference]: Without dead ends: 504 [2024-11-28 04:45:54,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:45:54,790 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 335 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:54,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 713 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-28 04:45:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2024-11-28 04:45:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 393 states have (on average 1.3638676844783715) internal successors, (536), 395 states have internal predecessors, (536), 73 states have call successors, (73), 31 states have call predecessors, (73), 31 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-28 04:45:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 682 transitions. [2024-11-28 04:45:54,832 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 682 transitions. Word has length 171 [2024-11-28 04:45:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:54,833 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 682 transitions. [2024-11-28 04:45:54,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 04:45:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 682 transitions. [2024-11-28 04:45:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-28 04:45:54,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:54,837 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:54,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:45:55,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:55,042 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:55,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1518725476, now seen corresponding path program 1 times [2024-11-28 04:45:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:55,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94116043] [2024-11-28 04:45:55,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:55,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-28 04:45:55,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94116043] [2024-11-28 04:45:55,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94116043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646804212] [2024-11-28 04:45:55,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:55,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:55,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:55,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:55,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:45:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:55,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:45:55,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-11-28 04:45:55,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646804212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:55,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:55,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:45:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27416120] [2024-11-28 04:45:55,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:55,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:55,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:55,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:55,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:55,673 INFO L87 Difference]: Start difference. First operand 498 states and 682 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:45:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:55,834 INFO L93 Difference]: Finished difference Result 794 states and 1106 transitions. [2024-11-28 04:45:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:55,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 202 [2024-11-28 04:45:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:55,842 INFO L225 Difference]: With dead ends: 794 [2024-11-28 04:45:55,842 INFO L226 Difference]: Without dead ends: 498 [2024-11-28 04:45:55,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:45:55,844 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 31 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:55,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 700 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:55,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-28 04:45:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2024-11-28 04:45:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 393 states have (on average 1.3486005089058524) internal successors, (530), 395 states have internal predecessors, (530), 73 states have call successors, (73), 31 states have call predecessors, (73), 31 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-28 04:45:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 676 transitions. [2024-11-28 04:45:55,889 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 676 transitions. Word has length 202 [2024-11-28 04:45:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:55,890 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 676 transitions. [2024-11-28 04:45:55,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:45:55,891 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 676 transitions. [2024-11-28 04:45:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-28 04:45:55,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:55,895 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:55,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:45:56,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:56,097 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:56,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:56,098 INFO L85 PathProgramCache]: Analyzing trace with hash -466205611, now seen corresponding path program 1 times [2024-11-28 04:45:56,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:56,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137686594] [2024-11-28 04:45:56,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-28 04:45:56,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:56,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137686594] [2024-11-28 04:45:56,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137686594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:56,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53785724] [2024-11-28 04:45:56,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:56,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:56,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:56,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:56,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:45:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:56,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:45:56,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-28 04:45:56,729 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:56,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53785724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:56,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:56,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:45:56,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566849096] [2024-11-28 04:45:56,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:56,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:56,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:56,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:56,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:56,732 INFO L87 Difference]: Start difference. First operand 498 states and 676 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:45:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:56,855 INFO L93 Difference]: Finished difference Result 794 states and 1092 transitions. [2024-11-28 04:45:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:56,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 203 [2024-11-28 04:45:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:56,861 INFO L225 Difference]: With dead ends: 794 [2024-11-28 04:45:56,861 INFO L226 Difference]: Without dead ends: 510 [2024-11-28 04:45:56,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:45:56,863 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:56,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 708 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-28 04:45:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2024-11-28 04:45:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 403 states have (on average 1.349875930521092) internal successors, (544), 405 states have internal predecessors, (544), 73 states have call successors, (73), 33 states have call predecessors, (73), 33 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-28 04:45:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 690 transitions. [2024-11-28 04:45:56,903 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 690 transitions. Word has length 203 [2024-11-28 04:45:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:56,904 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 690 transitions. [2024-11-28 04:45:56,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:45:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 690 transitions. [2024-11-28 04:45:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-28 04:45:56,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:56,908 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:56,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:45:57,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:45:57,112 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:57,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash 322582070, now seen corresponding path program 1 times [2024-11-28 04:45:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360024365] [2024-11-28 04:45:57,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-28 04:45:57,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:57,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360024365] [2024-11-28 04:45:57,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360024365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:57,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508962055] [2024-11-28 04:45:57,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:57,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:57,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:57,323 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:57,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:45:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:57,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:45:57,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-28 04:45:57,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:57,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508962055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:57,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:57,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:45:57,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757291688] [2024-11-28 04:45:57,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:57,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:57,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:57,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:57,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:57,795 INFO L87 Difference]: Start difference. First operand 510 states and 690 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 04:45:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:57,900 INFO L93 Difference]: Finished difference Result 1112 states and 1526 transitions. [2024-11-28 04:45:57,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:57,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 204 [2024-11-28 04:45:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:57,908 INFO L225 Difference]: With dead ends: 1112 [2024-11-28 04:45:57,908 INFO L226 Difference]: Without dead ends: 816 [2024-11-28 04:45:57,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:57,913 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 164 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:57,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 530 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-11-28 04:45:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 633. [2024-11-28 04:45:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 501 states have (on average 1.3532934131736527) internal successors, (678), 507 states have internal predecessors, (678), 88 states have call successors, (88), 43 states have call predecessors, (88), 43 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-28 04:45:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 854 transitions. [2024-11-28 04:45:57,990 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 854 transitions. Word has length 204 [2024-11-28 04:45:57,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:57,990 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 854 transitions. [2024-11-28 04:45:57,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 04:45:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 854 transitions. [2024-11-28 04:45:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-28 04:45:57,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:57,996 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:58,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:45:58,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:45:58,197 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:58,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash -374103570, now seen corresponding path program 1 times [2024-11-28 04:45:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233319279] [2024-11-28 04:45:58,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-28 04:45:58,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:58,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233319279] [2024-11-28 04:45:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233319279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214232891] [2024-11-28 04:45:58,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:58,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:58,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:58,492 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:58,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:45:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:58,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:45:58,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-11-28 04:45:58,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:58,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214232891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:58,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:58,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:45:58,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757391788] [2024-11-28 04:45:58,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:58,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:58,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:58,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:58,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:58,875 INFO L87 Difference]: Start difference. First operand 633 states and 854 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 04:45:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:58,972 INFO L93 Difference]: Finished difference Result 1395 states and 1902 transitions. [2024-11-28 04:45:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:58,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 205 [2024-11-28 04:45:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:58,984 INFO L225 Difference]: With dead ends: 1395 [2024-11-28 04:45:58,984 INFO L226 Difference]: Without dead ends: 1012 [2024-11-28 04:45:58,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:58,987 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 168 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:58,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-11-28 04:45:59,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1004. [2024-11-28 04:45:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 790 states have (on average 1.3658227848101265) internal successors, (1079), 804 states have internal predecessors, (1079), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 132 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-28 04:45:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1363 transitions. [2024-11-28 04:45:59,087 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1363 transitions. Word has length 205 [2024-11-28 04:45:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:59,088 INFO L471 AbstractCegarLoop]: Abstraction has 1004 states and 1363 transitions. [2024-11-28 04:45:59,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 04:45:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1363 transitions. [2024-11-28 04:45:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-28 04:45:59,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:59,093 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:59,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:45:59,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:59,294 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:59,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:59,295 INFO L85 PathProgramCache]: Analyzing trace with hash -922436527, now seen corresponding path program 1 times [2024-11-28 04:45:59,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:59,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728665580] [2024-11-28 04:45:59,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:59,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-28 04:45:59,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728665580] [2024-11-28 04:45:59,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728665580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034210108] [2024-11-28 04:45:59,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:59,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:59,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:59,517 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:59,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:45:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:59,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:45:59,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-28 04:45:59,852 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:59,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034210108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:59,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:59,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:45:59,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673895690] [2024-11-28 04:45:59,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:59,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:59,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:59,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:59,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:59,854 INFO L87 Difference]: Start difference. First operand 1004 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:45:59,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:59,979 INFO L93 Difference]: Finished difference Result 2340 states and 3213 transitions. [2024-11-28 04:45:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 206 [2024-11-28 04:45:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:59,992 INFO L225 Difference]: With dead ends: 2340 [2024-11-28 04:45:59,993 INFO L226 Difference]: Without dead ends: 1632 [2024-11-28 04:45:59,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:59,996 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 175 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:59,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 563 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:59,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2024-11-28 04:46:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1618. [2024-11-28 04:46:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1268 states have (on average 1.3809148264984228) internal successors, (1751), 1296 states have internal predecessors, (1751), 234 states have call successors, (234), 115 states have call predecessors, (234), 115 states have return successors, (234), 214 states have call predecessors, (234), 234 states have call successors, (234) [2024-11-28 04:46:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2219 transitions. [2024-11-28 04:46:00,146 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2219 transitions. Word has length 206 [2024-11-28 04:46:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:00,147 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2219 transitions. [2024-11-28 04:46:00,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:46:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2219 transitions. [2024-11-28 04:46:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-28 04:46:00,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:00,154 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:00,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:00,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:46:00,355 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:00,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1951795825, now seen corresponding path program 1 times [2024-11-28 04:46:00,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:00,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388128288] [2024-11-28 04:46:00,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:00,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-28 04:46:00,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:00,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388128288] [2024-11-28 04:46:00,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388128288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:00,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780419510] [2024-11-28 04:46:00,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:00,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:00,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:00,549 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:00,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:46:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:00,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:46:00,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-28 04:46:00,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780419510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:00,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:46:00,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 04:46:00,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451112849] [2024-11-28 04:46:00,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:00,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:46:00,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:00,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:46:00,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:46:00,932 INFO L87 Difference]: Start difference. First operand 1618 states and 2219 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:46:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:01,080 INFO L93 Difference]: Finished difference Result 3079 states and 4237 transitions. [2024-11-28 04:46:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:01,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 206 [2024-11-28 04:46:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:01,093 INFO L225 Difference]: With dead ends: 3079 [2024-11-28 04:46:01,094 INFO L226 Difference]: Without dead ends: 1620 [2024-11-28 04:46:01,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:46:01,099 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 0 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:01,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1019 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:46:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2024-11-28 04:46:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1618. [2024-11-28 04:46:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1268 states have (on average 1.3761829652996846) internal successors, (1745), 1296 states have internal predecessors, (1745), 234 states have call successors, (234), 115 states have call predecessors, (234), 115 states have return successors, (234), 214 states have call predecessors, (234), 234 states have call successors, (234) [2024-11-28 04:46:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2213 transitions. [2024-11-28 04:46:01,265 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2213 transitions. Word has length 206 [2024-11-28 04:46:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:01,266 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2213 transitions. [2024-11-28 04:46:01,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:46:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2213 transitions. [2024-11-28 04:46:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-28 04:46:01,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:01,272 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:01,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:46:01,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:46:01,476 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:01,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash -984539219, now seen corresponding path program 1 times [2024-11-28 04:46:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:01,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14642079] [2024-11-28 04:46:01,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-11-28 04:46:01,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14642079] [2024-11-28 04:46:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14642079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548220056] [2024-11-28 04:46:01,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:01,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:01,678 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:01,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:46:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:01,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:46:01,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 129 proven. 11 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-28 04:46:02,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-28 04:46:02,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548220056] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:02,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:46:02,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-11-28 04:46:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666248425] [2024-11-28 04:46:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:02,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:46:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:02,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:46:02,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:46:02,282 INFO L87 Difference]: Start difference. First operand 1618 states and 2213 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:46:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:02,456 INFO L93 Difference]: Finished difference Result 3101 states and 4261 transitions. [2024-11-28 04:46:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:46:02,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 213 [2024-11-28 04:46:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:02,470 INFO L225 Difference]: With dead ends: 3101 [2024-11-28 04:46:02,470 INFO L226 Difference]: Without dead ends: 1609 [2024-11-28 04:46:02,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:46:02,475 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 35 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:02,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 479 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:46:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2024-11-28 04:46:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2024-11-28 04:46:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1262 states have (on average 1.3708399366085577) internal successors, (1730), 1290 states have internal predecessors, (1730), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-28 04:46:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2192 transitions. [2024-11-28 04:46:02,615 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2192 transitions. Word has length 213 [2024-11-28 04:46:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:02,616 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2192 transitions. [2024-11-28 04:46:02,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:46:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2192 transitions. [2024-11-28 04:46:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-28 04:46:02,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:02,622 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:02,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:02,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:46:02,823 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:02,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash 181069920, now seen corresponding path program 1 times [2024-11-28 04:46:02,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:02,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615606929] [2024-11-28 04:46:02,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:02,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-28 04:46:03,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:03,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615606929] [2024-11-28 04:46:03,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615606929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:03,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510717174] [2024-11-28 04:46:03,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:03,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:03,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:03,023 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:03,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:46:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:03,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:46:03,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-11-28 04:46:03,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:03,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510717174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:03,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:46:03,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-28 04:46:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734462186] [2024-11-28 04:46:03,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:03,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:46:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:03,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:46:03,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:03,393 INFO L87 Difference]: Start difference. First operand 1609 states and 2192 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:46:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:03,522 INFO L93 Difference]: Finished difference Result 3109 states and 4254 transitions. [2024-11-28 04:46:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:03,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 237 [2024-11-28 04:46:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:03,594 INFO L225 Difference]: With dead ends: 3109 [2024-11-28 04:46:03,594 INFO L226 Difference]: Without dead ends: 1609 [2024-11-28 04:46:03,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:03,602 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:03,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1016 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:46:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2024-11-28 04:46:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2024-11-28 04:46:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1262 states have (on average 1.3684627575277337) internal successors, (1727), 1290 states have internal predecessors, (1727), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-28 04:46:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2189 transitions. [2024-11-28 04:46:03,790 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2189 transitions. Word has length 237 [2024-11-28 04:46:03,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:03,790 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2189 transitions. [2024-11-28 04:46:03,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:46:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2189 transitions. [2024-11-28 04:46:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-28 04:46:03,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:03,796 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:03,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:46:03,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:46:03,998 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:04,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1381168359, now seen corresponding path program 1 times [2024-11-28 04:46:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:04,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860101312] [2024-11-28 04:46:04,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:04,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 83 proven. 73 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-28 04:46:04,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:04,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860101312] [2024-11-28 04:46:04,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860101312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:04,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947177159] [2024-11-28 04:46:04,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:04,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:04,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:04,163 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:04,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:46:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:04,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:46:04,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 260 proven. 9 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-11-28 04:46:04,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-28 04:46:04,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947177159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:04,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:04,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 04:46:04,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888840595] [2024-11-28 04:46:04,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:04,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:46:04,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:04,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:46:04,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:04,761 INFO L87 Difference]: Start difference. First operand 1609 states and 2189 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-28 04:46:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:04,918 INFO L93 Difference]: Finished difference Result 3147 states and 4297 transitions. [2024-11-28 04:46:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:04,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 243 [2024-11-28 04:46:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:04,930 INFO L225 Difference]: With dead ends: 3147 [2024-11-28 04:46:04,930 INFO L226 Difference]: Without dead ends: 1606 [2024-11-28 04:46:04,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:04,935 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 32 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:04,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 912 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-11-28 04:46:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2024-11-28 04:46:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1259 states have (on average 1.3669579030976966) internal successors, (1721), 1287 states have internal predecessors, (1721), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-28 04:46:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2183 transitions. [2024-11-28 04:46:05,134 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2183 transitions. Word has length 243 [2024-11-28 04:46:05,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:05,135 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2183 transitions. [2024-11-28 04:46:05,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-28 04:46:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2183 transitions. [2024-11-28 04:46:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-28 04:46:05,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:05,143 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:05,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:46:05,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:46:05,347 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:05,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1839717551, now seen corresponding path program 1 times [2024-11-28 04:46:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:05,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639222708] [2024-11-28 04:46:05,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:05,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-28 04:46:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639222708] [2024-11-28 04:46:06,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639222708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:06,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:06,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:46:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465739769] [2024-11-28 04:46:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:06,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:06,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:06,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:06,130 INFO L87 Difference]: Start difference. First operand 1606 states and 2183 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 04:46:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:06,404 INFO L93 Difference]: Finished difference Result 2444 states and 3546 transitions. [2024-11-28 04:46:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:46:06,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 270 [2024-11-28 04:46:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:06,421 INFO L225 Difference]: With dead ends: 2444 [2024-11-28 04:46:06,422 INFO L226 Difference]: Without dead ends: 2442 [2024-11-28 04:46:06,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:46:06,424 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 116 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:06,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1832 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2024-11-28 04:46:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1654. [2024-11-28 04:46:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1291 states have (on average 1.3578621223857474) internal successors, (1753), 1327 states have internal predecessors, (1753), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-28 04:46:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2231 transitions. [2024-11-28 04:46:06,616 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2231 transitions. Word has length 270 [2024-11-28 04:46:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:06,617 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 2231 transitions. [2024-11-28 04:46:06,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 04:46:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2231 transitions. [2024-11-28 04:46:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-28 04:46:06,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:06,623 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:06,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 04:46:06,624 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:06,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash -413546924, now seen corresponding path program 1 times [2024-11-28 04:46:06,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:06,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394388888] [2024-11-28 04:46:06,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-28 04:46:07,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394388888] [2024-11-28 04:46:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394388888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81079921] [2024-11-28 04:46:07,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:07,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:07,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:07,188 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:07,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:46:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:07,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:46:07,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-28 04:46:07,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-28 04:46:08,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81079921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:08,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:08,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-28 04:46:08,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977652439] [2024-11-28 04:46:08,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:08,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:46:08,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:08,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:46:08,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:46:08,476 INFO L87 Difference]: Start difference. First operand 1654 states and 2231 transitions. Second operand has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-28 04:46:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:09,442 INFO L93 Difference]: Finished difference Result 4058 states and 5664 transitions. [2024-11-28 04:46:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:46:09,443 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 278 [2024-11-28 04:46:09,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:09,463 INFO L225 Difference]: With dead ends: 4058 [2024-11-28 04:46:09,464 INFO L226 Difference]: Without dead ends: 2708 [2024-11-28 04:46:09,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 547 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:46:09,471 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 337 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:09,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 3491 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:46:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-11-28 04:46:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2480. [2024-11-28 04:46:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 1934 states have (on average 1.3536711478800414) internal successors, (2618), 1986 states have internal predecessors, (2618), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2024-11-28 04:46:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3338 transitions. [2024-11-28 04:46:09,813 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3338 transitions. Word has length 278 [2024-11-28 04:46:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:09,814 INFO L471 AbstractCegarLoop]: Abstraction has 2480 states and 3338 transitions. [2024-11-28 04:46:09,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-28 04:46:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3338 transitions. [2024-11-28 04:46:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-28 04:46:09,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:09,821 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:09,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:10,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:10,022 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:10,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:10,023 INFO L85 PathProgramCache]: Analyzing trace with hash 548067093, now seen corresponding path program 1 times [2024-11-28 04:46:10,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:10,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410488109] [2024-11-28 04:46:10,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:10,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-28 04:46:10,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:10,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410488109] [2024-11-28 04:46:10,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410488109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:10,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229843969] [2024-11-28 04:46:10,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:10,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:10,229 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:10,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:46:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:10,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:46:10,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-11-28 04:46:10,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:10,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229843969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:10,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:46:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:46:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103260735] [2024-11-28 04:46:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:10,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:46:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:10,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:46:10,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:46:10,604 INFO L87 Difference]: Start difference. First operand 2480 states and 3338 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:46:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:10,852 INFO L93 Difference]: Finished difference Result 4793 states and 6552 transitions. [2024-11-28 04:46:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:10,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 278 [2024-11-28 04:46:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:10,869 INFO L225 Difference]: With dead ends: 4793 [2024-11-28 04:46:10,869 INFO L226 Difference]: Without dead ends: 2416 [2024-11-28 04:46:10,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:10,876 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 4 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:10,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 699 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2024-11-28 04:46:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2416. [2024-11-28 04:46:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 1890 states have (on average 1.3375661375661376) internal successors, (2528), 1942 states have internal predecessors, (2528), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2024-11-28 04:46:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3212 transitions. [2024-11-28 04:46:11,156 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3212 transitions. Word has length 278 [2024-11-28 04:46:11,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:11,157 INFO L471 AbstractCegarLoop]: Abstraction has 2416 states and 3212 transitions. [2024-11-28 04:46:11,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:46:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3212 transitions. [2024-11-28 04:46:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-28 04:46:11,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:11,168 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:11,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:46:11,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 04:46:11,369 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:11,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1038977620, now seen corresponding path program 1 times [2024-11-28 04:46:11,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:11,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142013343] [2024-11-28 04:46:11,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:11,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-11-28 04:46:11,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:11,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142013343] [2024-11-28 04:46:11,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142013343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734764484] [2024-11-28 04:46:11,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:11,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:11,630 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:11,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:46:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:12,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:46:12,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-11-28 04:46:12,040 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734764484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:12,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:46:12,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:46:12,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012341773] [2024-11-28 04:46:12,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:12,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:46:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:12,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:46:12,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:46:12,043 INFO L87 Difference]: Start difference. First operand 2416 states and 3212 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:46:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:12,271 INFO L93 Difference]: Finished difference Result 4551 states and 6145 transitions. [2024-11-28 04:46:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:12,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 281 [2024-11-28 04:46:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:12,292 INFO L225 Difference]: With dead ends: 4551 [2024-11-28 04:46:12,292 INFO L226 Difference]: Without dead ends: 2220 [2024-11-28 04:46:12,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:12,303 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 4 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:12,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 727 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2024-11-28 04:46:12,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2220. [2024-11-28 04:46:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1724 states have (on average 1.324245939675174) internal successors, (2283), 1776 states have internal predecessors, (2283), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2024-11-28 04:46:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2929 transitions. [2024-11-28 04:46:12,508 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2929 transitions. Word has length 281 [2024-11-28 04:46:12,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:12,509 INFO L471 AbstractCegarLoop]: Abstraction has 2220 states and 2929 transitions. [2024-11-28 04:46:12,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:46:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2929 transitions. [2024-11-28 04:46:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-28 04:46:12,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:12,517 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:12,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:12,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:12,722 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:12,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:12,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1369389821, now seen corresponding path program 1 times [2024-11-28 04:46:12,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:12,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712980642] [2024-11-28 04:46:12,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:12,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2024-11-28 04:46:13,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:13,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712980642] [2024-11-28 04:46:13,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712980642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:13,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685682245] [2024-11-28 04:46:13,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:13,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:13,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:13,356 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:13,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:46:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:13,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:46:13,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-28 04:46:13,924 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:13,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685682245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:13,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:46:13,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-28 04:46:13,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817989467] [2024-11-28 04:46:13,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:13,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:46:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:13,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:46:13,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:46:13,927 INFO L87 Difference]: Start difference. First operand 2220 states and 2929 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:46:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:14,574 INFO L93 Difference]: Finished difference Result 5562 states and 7317 transitions. [2024-11-28 04:46:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:46:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 293 [2024-11-28 04:46:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:14,616 INFO L225 Difference]: With dead ends: 5562 [2024-11-28 04:46:14,616 INFO L226 Difference]: Without dead ends: 3948 [2024-11-28 04:46:14,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:46:14,625 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 128 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:14,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1693 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:14,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2024-11-28 04:46:14,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3934. [2024-11-28 04:46:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3034 states have (on average 1.3098220171390904) internal successors, (3974), 3134 states have internal predecessors, (3974), 583 states have call successors, (583), 316 states have call predecessors, (583), 316 states have return successors, (583), 491 states have call predecessors, (583), 583 states have call successors, (583) [2024-11-28 04:46:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 5140 transitions. [2024-11-28 04:46:15,010 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 5140 transitions. Word has length 293 [2024-11-28 04:46:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:15,011 INFO L471 AbstractCegarLoop]: Abstraction has 3934 states and 5140 transitions. [2024-11-28 04:46:15,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:46:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 5140 transitions. [2024-11-28 04:46:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-28 04:46:15,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:15,021 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:15,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:46:15,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:15,225 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:15,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1529579416, now seen corresponding path program 1 times [2024-11-28 04:46:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:15,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476540485] [2024-11-28 04:46:15,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:15,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-28 04:46:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476540485] [2024-11-28 04:46:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476540485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:15,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:15,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:46:15,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464374064] [2024-11-28 04:46:15,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:15,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:46:15,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:15,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:46:15,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:46:15,580 INFO L87 Difference]: Start difference. First operand 3934 states and 5140 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:46:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:16,048 INFO L93 Difference]: Finished difference Result 8956 states and 11648 transitions. [2024-11-28 04:46:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:16,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 295 [2024-11-28 04:46:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:16,084 INFO L225 Difference]: With dead ends: 8956 [2024-11-28 04:46:16,084 INFO L226 Difference]: Without dead ends: 5306 [2024-11-28 04:46:16,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:16,096 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 319 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:16,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 731 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2024-11-28 04:46:16,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4594. [2024-11-28 04:46:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4594 states, 3523 states have (on average 1.2963383479988646) internal successors, (4567), 3635 states have internal predecessors, (4567), 687 states have call successors, (687), 383 states have call predecessors, (687), 383 states have return successors, (687), 583 states have call predecessors, (687), 687 states have call successors, (687) [2024-11-28 04:46:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4594 states to 4594 states and 5941 transitions. [2024-11-28 04:46:16,569 INFO L78 Accepts]: Start accepts. Automaton has 4594 states and 5941 transitions. Word has length 295 [2024-11-28 04:46:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:16,570 INFO L471 AbstractCegarLoop]: Abstraction has 4594 states and 5941 transitions. [2024-11-28 04:46:16,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:46:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4594 states and 5941 transitions. [2024-11-28 04:46:16,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-28 04:46:16,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:16,576 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:16,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 04:46:16,576 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:16,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:16,577 INFO L85 PathProgramCache]: Analyzing trace with hash 517139162, now seen corresponding path program 1 times [2024-11-28 04:46:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:16,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469438052] [2024-11-28 04:46:16,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:16,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2024-11-28 04:46:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469438052] [2024-11-28 04:46:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469438052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:17,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:17,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:46:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838405956] [2024-11-28 04:46:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:17,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:17,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:17,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:17,053 INFO L87 Difference]: Start difference. First operand 4594 states and 5941 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 04:46:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:17,488 INFO L93 Difference]: Finished difference Result 9186 states and 12149 transitions. [2024-11-28 04:46:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:46:17,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 299 [2024-11-28 04:46:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:17,525 INFO L225 Difference]: With dead ends: 9186 [2024-11-28 04:46:17,526 INFO L226 Difference]: Without dead ends: 5098 [2024-11-28 04:46:17,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:17,539 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 32 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:17,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1022 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5098 states. [2024-11-28 04:46:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 4990. [2024-11-28 04:46:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4990 states, 3847 states have (on average 1.3108916038471536) internal successors, (5043), 3959 states have internal predecessors, (5043), 759 states have call successors, (759), 383 states have call predecessors, (759), 383 states have return successors, (759), 655 states have call predecessors, (759), 759 states have call successors, (759) [2024-11-28 04:46:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 6561 transitions. [2024-11-28 04:46:18,046 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 6561 transitions. Word has length 299 [2024-11-28 04:46:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:18,047 INFO L471 AbstractCegarLoop]: Abstraction has 4990 states and 6561 transitions. [2024-11-28 04:46:18,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 04:46:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 6561 transitions. [2024-11-28 04:46:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-28 04:46:18,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:18,051 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:18,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 04:46:18,052 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:18,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1313275818, now seen corresponding path program 1 times [2024-11-28 04:46:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101842943] [2024-11-28 04:46:18,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2024-11-28 04:46:18,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:18,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101842943] [2024-11-28 04:46:18,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101842943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:18,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:18,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:46:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562527571] [2024-11-28 04:46:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:18,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:46:18,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:18,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:46:18,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:18,658 INFO L87 Difference]: Start difference. First operand 4990 states and 6561 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:46:19,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:19,074 INFO L93 Difference]: Finished difference Result 9319 states and 12307 transitions. [2024-11-28 04:46:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:19,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 299 [2024-11-28 04:46:19,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:19,104 INFO L225 Difference]: With dead ends: 9319 [2024-11-28 04:46:19,104 INFO L226 Difference]: Without dead ends: 4912 [2024-11-28 04:46:19,113 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 [2024-11-28 04:46:19,114 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 0 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:19,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 969 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2024-11-28 04:46:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 4912. [2024-11-28 04:46:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 3782 states have (on average 1.3088313061872026) internal successors, (4950), 3887 states have internal predecessors, (4950), 753 states have call successors, (753), 377 states have call predecessors, (753), 376 states have return successors, (752), 654 states have call predecessors, (752), 752 states have call successors, (752) [2024-11-28 04:46:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 6455 transitions. [2024-11-28 04:46:19,508 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 6455 transitions. Word has length 299 [2024-11-28 04:46:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:19,509 INFO L471 AbstractCegarLoop]: Abstraction has 4912 states and 6455 transitions. [2024-11-28 04:46:19,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:46:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 6455 transitions. [2024-11-28 04:46:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-28 04:46:19,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:19,513 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:19,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 04:46:19,514 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:19,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1149611780, now seen corresponding path program 1 times [2024-11-28 04:46:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675611646] [2024-11-28 04:46:19,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-28 04:46:19,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:19,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675611646] [2024-11-28 04:46:19,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675611646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:19,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646126013] [2024-11-28 04:46:19,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:19,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:19,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:19,998 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:20,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:46:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:20,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:46:20,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 189 proven. 4 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-28 04:46:20,746 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-28 04:46:21,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646126013] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:21,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:46:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 10] total 17 [2024-11-28 04:46:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56077211] [2024-11-28 04:46:21,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:21,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:46:21,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:21,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:46:21,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:46:21,058 INFO L87 Difference]: Start difference. First operand 4912 states and 6455 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 04:46:23,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:23,039 INFO L93 Difference]: Finished difference Result 14958 states and 19509 transitions. [2024-11-28 04:46:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:46:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 304 [2024-11-28 04:46:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:23,109 INFO L225 Difference]: With dead ends: 14958 [2024-11-28 04:46:23,109 INFO L226 Difference]: Without dead ends: 10566 [2024-11-28 04:46:23,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:46:23,124 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 667 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:23,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2735 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:46:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10566 states. [2024-11-28 04:46:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10566 to 6766. [2024-11-28 04:46:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6766 states, 5182 states have (on average 1.306445387881127) internal successors, (6770), 5332 states have internal predecessors, (6770), 1066 states have call successors, (1066), 518 states have call predecessors, (1066), 517 states have return successors, (1065), 922 states have call predecessors, (1065), 1065 states have call successors, (1065) [2024-11-28 04:46:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6766 states to 6766 states and 8901 transitions. [2024-11-28 04:46:23,993 INFO L78 Accepts]: Start accepts. Automaton has 6766 states and 8901 transitions. Word has length 304 [2024-11-28 04:46:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:23,994 INFO L471 AbstractCegarLoop]: Abstraction has 6766 states and 8901 transitions. [2024-11-28 04:46:23,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 04:46:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 6766 states and 8901 transitions. [2024-11-28 04:46:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-28 04:46:23,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:23,999 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:24,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:24,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:46:24,204 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:24,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash -474278660, now seen corresponding path program 1 times [2024-11-28 04:46:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029515132] [2024-11-28 04:46:24,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:24,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-28 04:46:26,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:26,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029515132] [2024-11-28 04:46:26,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029515132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:26,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74303358] [2024-11-28 04:46:26,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:26,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:26,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:26,087 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:26,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:46:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:26,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:46:26,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2024-11-28 04:46:26,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74303358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:26,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:46:26,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 12 [2024-11-28 04:46:26,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548384203] [2024-11-28 04:46:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:26,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:46:26,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:26,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:46:26,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:46:26,595 INFO L87 Difference]: Start difference. First operand 6766 states and 8901 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 04:46:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:27,552 INFO L93 Difference]: Finished difference Result 13102 states and 17221 transitions. [2024-11-28 04:46:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:46:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 304 [2024-11-28 04:46:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:27,591 INFO L225 Difference]: With dead ends: 13102 [2024-11-28 04:46:27,591 INFO L226 Difference]: Without dead ends: 6808 [2024-11-28 04:46:27,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:46:27,606 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 122 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:27,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1709 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6808 states. [2024-11-28 04:46:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6808 to 6566. [2024-11-28 04:46:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 5030 states have (on average 1.2982107355864811) internal successors, (6530), 5176 states have internal predecessors, (6530), 1022 states have call successors, (1022), 514 states have call predecessors, (1022), 513 states have return successors, (1021), 882 states have call predecessors, (1021), 1021 states have call successors, (1021) [2024-11-28 04:46:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 8573 transitions. [2024-11-28 04:46:28,114 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 8573 transitions. Word has length 304 [2024-11-28 04:46:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:28,115 INFO L471 AbstractCegarLoop]: Abstraction has 6566 states and 8573 transitions. [2024-11-28 04:46:28,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 04:46:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 8573 transitions. [2024-11-28 04:46:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-28 04:46:28,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:28,120 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:28,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:28,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:46:28,321 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:28,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 862609092, now seen corresponding path program 1 times [2024-11-28 04:46:28,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:28,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272334458] [2024-11-28 04:46:28,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:28,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-28 04:46:28,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:28,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272334458] [2024-11-28 04:46:28,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272334458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:28,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:28,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:46:28,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205247613] [2024-11-28 04:46:28,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:28,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:46:28,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:28,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:46:28,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:46:28,557 INFO L87 Difference]: Start difference. First operand 6566 states and 8573 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 04:46:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:29,428 INFO L93 Difference]: Finished difference Result 11928 states and 15607 transitions. [2024-11-28 04:46:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:29,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 311 [2024-11-28 04:46:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:29,463 INFO L225 Difference]: With dead ends: 11928 [2024-11-28 04:46:29,463 INFO L226 Difference]: Without dead ends: 6130 [2024-11-28 04:46:29,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:29,476 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 432 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:29,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 886 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:46:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2024-11-28 04:46:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 5876. [2024-11-28 04:46:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4509 states have (on average 1.2789975604346862) internal successors, (5767), 4633 states have internal predecessors, (5767), 907 states have call successors, (907), 459 states have call predecessors, (907), 459 states have return successors, (907), 783 states have call predecessors, (907), 907 states have call successors, (907) [2024-11-28 04:46:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 7581 transitions. [2024-11-28 04:46:29,972 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 7581 transitions. Word has length 311 [2024-11-28 04:46:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:29,973 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 7581 transitions. [2024-11-28 04:46:29,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 04:46:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 7581 transitions. [2024-11-28 04:46:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-28 04:46:29,987 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:29,988 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:29,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 04:46:29,989 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:29,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash 365093765, now seen corresponding path program 1 times [2024-11-28 04:46:29,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:29,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403241759] [2024-11-28 04:46:29,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:29,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-28 04:46:32,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:32,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403241759] [2024-11-28 04:46:32,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403241759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:32,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508799661] [2024-11-28 04:46:32,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:32,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:32,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:32,026 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:32,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:46:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:32,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:46:32,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 211 proven. 122 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-28 04:46:33,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-28 04:46:35,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508799661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:35,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:35,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 34 [2024-11-28 04:46:35,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792621181] [2024-11-28 04:46:35,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:35,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:46:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:35,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:46:35,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:46:35,149 INFO L87 Difference]: Start difference. First operand 5876 states and 7581 transitions. Second operand has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) [2024-11-28 04:46:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:58,996 INFO L93 Difference]: Finished difference Result 45065 states and 61620 transitions. [2024-11-28 04:46:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2024-11-28 04:46:58,999 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) Word has length 359 [2024-11-28 04:46:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:59,361 INFO L225 Difference]: With dead ends: 45065 [2024-11-28 04:46:59,362 INFO L226 Difference]: Without dead ends: 39965 [2024-11-28 04:46:59,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 736 SyntacticMatches, 1 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41229 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=7076, Invalid=88714, Unknown=0, NotChecked=0, Total=95790 [2024-11-28 04:46:59,421 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 6343 mSDsluCounter, 15819 mSDsCounter, 0 mSdLazyCounter, 9773 mSolverCounterSat, 1897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6351 SdHoareTripleChecker+Valid, 16778 SdHoareTripleChecker+Invalid, 11670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 9773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:59,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6351 Valid, 16778 Invalid, 11670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1897 Valid, 9773 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-28 04:46:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39965 states. [2024-11-28 04:47:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39965 to 7664. [2024-11-28 04:47:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7664 states, 5912 states have (on average 1.2640392422192153) internal successors, (7473), 6158 states have internal predecessors, (7473), 1138 states have call successors, (1138), 613 states have call predecessors, (1138), 613 states have return successors, (1138), 892 states have call predecessors, (1138), 1138 states have call successors, (1138) [2024-11-28 04:47:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7664 states to 7664 states and 9749 transitions. [2024-11-28 04:47:02,820 INFO L78 Accepts]: Start accepts. Automaton has 7664 states and 9749 transitions. Word has length 359 [2024-11-28 04:47:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:02,823 INFO L471 AbstractCegarLoop]: Abstraction has 7664 states and 9749 transitions. [2024-11-28 04:47:02,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) [2024-11-28 04:47:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7664 states and 9749 transitions. [2024-11-28 04:47:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-28 04:47:02,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:02,895 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:02,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 04:47:03,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 04:47:03,101 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:03,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:03,105 INFO L85 PathProgramCache]: Analyzing trace with hash -668124549, now seen corresponding path program 1 times [2024-11-28 04:47:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:03,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183260731] [2024-11-28 04:47:03,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-28 04:47:08,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183260731] [2024-11-28 04:47:08,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183260731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:08,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052368890] [2024-11-28 04:47:08,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:08,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:08,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:08,243 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:08,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:47:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:08,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 04:47:08,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 211 proven. 120 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-28 04:47:10,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-28 04:47:11,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052368890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:11,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:11,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 18] total 39 [2024-11-28 04:47:11,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767192013] [2024-11-28 04:47:11,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:11,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:47:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:11,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:47:11,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:47:11,672 INFO L87 Difference]: Start difference. First operand 7664 states and 9749 transitions. Second operand has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) [2024-11-28 04:47:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:55,005 INFO L93 Difference]: Finished difference Result 63278 states and 85642 transitions. [2024-11-28 04:47:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2024-11-28 04:47:55,007 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) Word has length 360 [2024-11-28 04:47:55,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:55,301 INFO L225 Difference]: With dead ends: 63278 [2024-11-28 04:47:55,301 INFO L226 Difference]: Without dead ends: 56498 [2024-11-28 04:47:55,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46124 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=9348, Invalid=97254, Unknown=0, NotChecked=0, Total=106602 [2024-11-28 04:47:55,346 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 8030 mSDsluCounter, 18247 mSDsCounter, 0 mSdLazyCounter, 12168 mSolverCounterSat, 2532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 19240 SdHoareTripleChecker+Invalid, 14700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2532 IncrementalHoareTripleChecker+Valid, 12168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:55,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 19240 Invalid, 14700 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2532 Valid, 12168 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2024-11-28 04:47:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56498 states. [2024-11-28 04:47:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56498 to 8690. [2024-11-28 04:47:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8690 states, 6798 states have (on average 1.2655192703736393) internal successors, (8603), 7114 states have internal predecessors, (8603), 1215 states have call successors, (1215), 676 states have call predecessors, (1215), 676 states have return successors, (1215), 899 states have call predecessors, (1215), 1215 states have call successors, (1215) [2024-11-28 04:47:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8690 states to 8690 states and 11033 transitions. [2024-11-28 04:47:58,778 INFO L78 Accepts]: Start accepts. Automaton has 8690 states and 11033 transitions. Word has length 360 [2024-11-28 04:47:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:58,779 INFO L471 AbstractCegarLoop]: Abstraction has 8690 states and 11033 transitions. [2024-11-28 04:47:58,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) [2024-11-28 04:47:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 8690 states and 11033 transitions. [2024-11-28 04:47:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-28 04:47:58,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:58,805 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:58,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 04:47:59,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-28 04:47:59,010 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:59,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1385929050, now seen corresponding path program 1 times [2024-11-28 04:47:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509046029] [2024-11-28 04:47:59,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2024-11-28 04:48:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:02,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509046029] [2024-11-28 04:48:02,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509046029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378247559] [2024-11-28 04:48:02,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:02,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:02,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:02,349 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:02,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:48:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:02,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 04:48:02,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 206 proven. 121 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2024-11-28 04:48:03,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2024-11-28 04:48:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378247559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:04,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:04,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 16] total 39 [2024-11-28 04:48:04,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907264169] [2024-11-28 04:48:04,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:04,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:48:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:04,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:48:04,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:48:04,854 INFO L87 Difference]: Start difference. First operand 8690 states and 11033 transitions. Second operand has 39 states, 35 states have (on average 7.142857142857143) internal successors, (250), 33 states have internal predecessors, (250), 11 states have call successors, (54), 8 states have call predecessors, (54), 18 states have return successors, (58), 12 states have call predecessors, (58), 10 states have call successors, (58) [2024-11-28 04:48:20,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:20,266 INFO L93 Difference]: Finished difference Result 37277 states and 48245 transitions. [2024-11-28 04:48:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-28 04:48:20,267 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 7.142857142857143) internal successors, (250), 33 states have internal predecessors, (250), 11 states have call successors, (54), 8 states have call predecessors, (54), 18 states have return successors, (58), 12 states have call predecessors, (58), 10 states have call successors, (58) Word has length 361 [2024-11-28 04:48:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:20,413 INFO L225 Difference]: With dead ends: 37277 [2024-11-28 04:48:20,414 INFO L226 Difference]: Without dead ends: 29127 [2024-11-28 04:48:20,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1571, Invalid=8529, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 04:48:20,436 INFO L435 NwaCegarLoop]: 613 mSDtfsCounter, 1911 mSDsluCounter, 7997 mSDsCounter, 0 mSdLazyCounter, 6191 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 8610 SdHoareTripleChecker+Invalid, 6980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 6191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:20,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 8610 Invalid, 6980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [789 Valid, 6191 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-28 04:48:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29127 states. [2024-11-28 04:48:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29127 to 17760. [2024-11-28 04:48:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17760 states, 13922 states have (on average 1.2668438442752479) internal successors, (17637), 14553 states have internal predecessors, (17637), 2501 states have call successors, (2501), 1328 states have call predecessors, (2501), 1336 states have return successors, (2517), 1878 states have call predecessors, (2517), 2501 states have call successors, (2517) [2024-11-28 04:48:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17760 states to 17760 states and 22655 transitions. [2024-11-28 04:48:27,419 INFO L78 Accepts]: Start accepts. Automaton has 17760 states and 22655 transitions. Word has length 361 [2024-11-28 04:48:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:27,420 INFO L471 AbstractCegarLoop]: Abstraction has 17760 states and 22655 transitions. [2024-11-28 04:48:27,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 7.142857142857143) internal successors, (250), 33 states have internal predecessors, (250), 11 states have call successors, (54), 8 states have call predecessors, (54), 18 states have return successors, (58), 12 states have call predecessors, (58), 10 states have call successors, (58) [2024-11-28 04:48:27,420 INFO L276 IsEmpty]: Start isEmpty. Operand 17760 states and 22655 transitions. [2024-11-28 04:48:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-28 04:48:27,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:27,440 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:27,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 04:48:27,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:27,641 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:27,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:27,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1189415545, now seen corresponding path program 1 times [2024-11-28 04:48:27,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:27,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852916088] [2024-11-28 04:48:27,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:27,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2024-11-28 04:48:27,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:27,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852916088] [2024-11-28 04:48:27,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852916088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:27,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:48:27,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:48:27,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005883796] [2024-11-28 04:48:27,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:27,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:48:27,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:27,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:48:27,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:48:27,886 INFO L87 Difference]: Start difference. First operand 17760 states and 22655 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-28 04:48:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:32,876 INFO L93 Difference]: Finished difference Result 36009 states and 45841 transitions. [2024-11-28 04:48:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:48:32,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 361 [2024-11-28 04:48:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:32,969 INFO L225 Difference]: With dead ends: 36009 [2024-11-28 04:48:32,969 INFO L226 Difference]: Without dead ends: 17728 [2024-11-28 04:48:32,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:48:33,001 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 26 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:33,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:48:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2024-11-28 04:48:38,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 17728. [2024-11-28 04:48:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17728 states, 13898 states have (on average 1.247517628435746) internal successors, (17338), 14529 states have internal predecessors, (17338), 2501 states have call successors, (2501), 1328 states have call predecessors, (2501), 1328 states have return successors, (2501), 1870 states have call predecessors, (2501), 2501 states have call successors, (2501) [2024-11-28 04:48:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17728 states to 17728 states and 22340 transitions. [2024-11-28 04:48:38,108 INFO L78 Accepts]: Start accepts. Automaton has 17728 states and 22340 transitions. Word has length 361 [2024-11-28 04:48:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:38,109 INFO L471 AbstractCegarLoop]: Abstraction has 17728 states and 22340 transitions. [2024-11-28 04:48:38,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-28 04:48:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 17728 states and 22340 transitions. [2024-11-28 04:48:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-28 04:48:38,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:38,130 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:38,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-28 04:48:38,131 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:38,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:38,131 INFO L85 PathProgramCache]: Analyzing trace with hash 962227870, now seen corresponding path program 1 times [2024-11-28 04:48:38,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:38,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715032328] [2024-11-28 04:48:38,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:38,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 49 proven. 193 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-11-28 04:48:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:41,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715032328] [2024-11-28 04:48:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715032328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:41,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169641524] [2024-11-28 04:48:41,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:41,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:41,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:41,278 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:41,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:48:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:41,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:48:41,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 142 proven. 3 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-28 04:48:42,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2024-11-28 04:48:43,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169641524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:43,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:43,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 38 [2024-11-28 04:48:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750733539] [2024-11-28 04:48:43,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:43,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:48:43,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:43,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:48:43,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:48:43,044 INFO L87 Difference]: Start difference. First operand 17728 states and 22340 transitions. Second operand has 38 states, 34 states have (on average 6.294117647058823) internal successors, (214), 31 states have internal predecessors, (214), 12 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (52), 13 states have call predecessors, (52), 11 states have call successors, (52) [2024-11-28 04:48:59,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:59,998 INFO L93 Difference]: Finished difference Result 51205 states and 67038 transitions. [2024-11-28 04:48:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-28 04:48:59,999 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 6.294117647058823) internal successors, (214), 31 states have internal predecessors, (214), 12 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (52), 13 states have call predecessors, (52), 11 states have call successors, (52) Word has length 361 [2024-11-28 04:49:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:00,325 INFO L225 Difference]: With dead ends: 51205 [2024-11-28 04:49:00,326 INFO L226 Difference]: Without dead ends: 34379 [2024-11-28 04:49:00,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2478 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=808, Invalid=9092, Unknown=0, NotChecked=0, Total=9900 [2024-11-28 04:49:00,444 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 1808 mSDsluCounter, 5945 mSDsCounter, 0 mSdLazyCounter, 5057 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 6220 SdHoareTripleChecker+Invalid, 5851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 5057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:00,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 6220 Invalid, 5851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [794 Valid, 5057 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 04:49:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34379 states. [2024-11-28 04:49:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34379 to 20437. [2024-11-28 04:49:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20437 states, 15919 states have (on average 1.234688108549532) internal successors, (19655), 16633 states have internal predecessors, (19655), 2952 states have call successors, (2952), 1563 states have call predecessors, (2952), 1565 states have return successors, (2956), 2240 states have call predecessors, (2956), 2952 states have call successors, (2956) [2024-11-28 04:49:10,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20437 states to 20437 states and 25563 transitions. [2024-11-28 04:49:10,406 INFO L78 Accepts]: Start accepts. Automaton has 20437 states and 25563 transitions. Word has length 361 [2024-11-28 04:49:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:10,407 INFO L471 AbstractCegarLoop]: Abstraction has 20437 states and 25563 transitions. [2024-11-28 04:49:10,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 6.294117647058823) internal successors, (214), 31 states have internal predecessors, (214), 12 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (52), 13 states have call predecessors, (52), 11 states have call successors, (52) [2024-11-28 04:49:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 20437 states and 25563 transitions. [2024-11-28 04:49:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-28 04:49:10,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:10,443 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:10,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:49:10,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:10,644 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:10,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1238706827, now seen corresponding path program 1 times [2024-11-28 04:49:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:10,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108737101] [2024-11-28 04:49:10,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2024-11-28 04:49:11,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:11,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108737101] [2024-11-28 04:49:11,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108737101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:11,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654496740] [2024-11-28 04:49:11,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:11,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:11,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:11,101 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:11,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:49:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:11,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:49:11,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-28 04:49:11,838 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654496740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:11,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:49:11,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:49:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270508521] [2024-11-28 04:49:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:11,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:49:11,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:11,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:49:11,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:49:11,845 INFO L87 Difference]: Start difference. First operand 20437 states and 25563 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:49:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:17,873 INFO L93 Difference]: Finished difference Result 40090 states and 50220 transitions. [2024-11-28 04:49:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:49:17,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 374 [2024-11-28 04:49:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:18,069 INFO L225 Difference]: With dead ends: 40090 [2024-11-28 04:49:18,069 INFO L226 Difference]: Without dead ends: 19654 [2024-11-28 04:49:18,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:49:18,108 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 18 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:18,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 669 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19654 states. [2024-11-28 04:49:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19654 to 19418. [2024-11-28 04:49:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19418 states, 15119 states have (on average 1.238177128116939) internal successors, (18720), 15802 states have internal predecessors, (18720), 2821 states have call successors, (2821), 1477 states have call predecessors, (2821), 1477 states have return successors, (2821), 2138 states have call predecessors, (2821), 2821 states have call successors, (2821) [2024-11-28 04:49:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19418 states to 19418 states and 24362 transitions. [2024-11-28 04:49:24,906 INFO L78 Accepts]: Start accepts. Automaton has 19418 states and 24362 transitions. Word has length 374 [2024-11-28 04:49:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:24,907 INFO L471 AbstractCegarLoop]: Abstraction has 19418 states and 24362 transitions. [2024-11-28 04:49:24,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:49:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 19418 states and 24362 transitions. [2024-11-28 04:49:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-28 04:49:24,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:24,944 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:24,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 04:49:25,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 04:49:25,149 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:25,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:25,150 INFO L85 PathProgramCache]: Analyzing trace with hash 557378052, now seen corresponding path program 1 times [2024-11-28 04:49:25,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:25,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676232715] [2024-11-28 04:49:25,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:25,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 58 proven. 52 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2024-11-28 04:49:27,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676232715] [2024-11-28 04:49:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676232715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170822501] [2024-11-28 04:49:27,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:27,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:27,393 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:27,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:49:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:27,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 04:49:27,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 319 proven. 122 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2024-11-28 04:49:28,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 61 proven. 61 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2024-11-28 04:49:29,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170822501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:29,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 38 [2024-11-28 04:49:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085896279] [2024-11-28 04:49:29,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:29,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:49:29,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:29,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:49:29,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:49:29,599 INFO L87 Difference]: Start difference. First operand 19418 states and 24362 transitions. Second operand has 38 states, 35 states have (on average 7.857142857142857) internal successors, (275), 32 states have internal predecessors, (275), 10 states have call successors, (62), 8 states have call predecessors, (62), 18 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) [2024-11-28 04:49:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:59,496 INFO L93 Difference]: Finished difference Result 79915 states and 101816 transitions. [2024-11-28 04:49:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-28 04:49:59,496 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 7.857142857142857) internal successors, (275), 32 states have internal predecessors, (275), 10 states have call successors, (62), 8 states have call predecessors, (62), 18 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) Word has length 381 [2024-11-28 04:49:59,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:59,788 INFO L225 Difference]: With dead ends: 79915 [2024-11-28 04:49:59,788 INFO L226 Difference]: Without dead ends: 61317 [2024-11-28 04:49:59,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1533, Invalid=7973, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 04:49:59,831 INFO L435 NwaCegarLoop]: 652 mSDtfsCounter, 1492 mSDsluCounter, 10180 mSDsCounter, 0 mSdLazyCounter, 6215 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 10832 SdHoareTripleChecker+Invalid, 6784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 6215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:59,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 10832 Invalid, 6784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [569 Valid, 6215 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 04:49:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61317 states. [2024-11-28 04:50:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61317 to 38374. [2024-11-28 04:50:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38374 states, 29763 states have (on average 1.230857104458556) internal successors, (36634), 31032 states have internal predecessors, (36634), 5673 states have call successors, (5673), 2937 states have call predecessors, (5673), 2937 states have return successors, (5673), 4404 states have call predecessors, (5673), 5673 states have call successors, (5673) [2024-11-28 04:50:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38374 states to 38374 states and 47980 transitions. [2024-11-28 04:50:14,263 INFO L78 Accepts]: Start accepts. Automaton has 38374 states and 47980 transitions. Word has length 381 [2024-11-28 04:50:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:14,264 INFO L471 AbstractCegarLoop]: Abstraction has 38374 states and 47980 transitions. [2024-11-28 04:50:14,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 7.857142857142857) internal successors, (275), 32 states have internal predecessors, (275), 10 states have call successors, (62), 8 states have call predecessors, (62), 18 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) [2024-11-28 04:50:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 38374 states and 47980 transitions. [2024-11-28 04:50:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-28 04:50:14,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:14,333 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:14,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 04:50:14,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 04:50:14,538 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:14,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash 618897192, now seen corresponding path program 1 times [2024-11-28 04:50:14,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:14,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849925113] [2024-11-28 04:50:14,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 99 proven. 177 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-11-28 04:50:17,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:17,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849925113] [2024-11-28 04:50:17,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849925113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:17,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985949369] [2024-11-28 04:50:17,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:17,561 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:17,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:50:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:17,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:50:17,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 04:50:18,076 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985949369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:18,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:18,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 21 [2024-11-28 04:50:18,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877242820] [2024-11-28 04:50:18,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:18,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:50:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:18,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:50:18,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:50:18,079 INFO L87 Difference]: Start difference. First operand 38374 states and 47980 transitions. Second operand has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-28 04:50:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:27,995 INFO L93 Difference]: Finished difference Result 64129 states and 79982 transitions. [2024-11-28 04:50:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:50:27,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 381 [2024-11-28 04:50:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:28,099 INFO L225 Difference]: With dead ends: 64129 [2024-11-28 04:50:28,100 INFO L226 Difference]: Without dead ends: 26520 [2024-11-28 04:50:28,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:50:28,163 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:28,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 931 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:50:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2024-11-28 04:50:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 24240. [2024-11-28 04:50:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24240 states, 18756 states have (on average 1.2146513115802944) internal successors, (22782), 19455 states have internal predecessors, (22782), 3568 states have call successors, (3568), 1915 states have call predecessors, (3568), 1915 states have return successors, (3568), 2869 states have call predecessors, (3568), 3568 states have call successors, (3568) [2024-11-28 04:50:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24240 states to 24240 states and 29918 transitions. [2024-11-28 04:50:37,326 INFO L78 Accepts]: Start accepts. Automaton has 24240 states and 29918 transitions. Word has length 381 [2024-11-28 04:50:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:37,327 INFO L471 AbstractCegarLoop]: Abstraction has 24240 states and 29918 transitions. [2024-11-28 04:50:37,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-28 04:50:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 24240 states and 29918 transitions. [2024-11-28 04:50:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-28 04:50:37,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:37,357 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:37,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 04:50:37,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:37,558 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:37,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash -954052756, now seen corresponding path program 1 times [2024-11-28 04:50:37,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:37,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165058079] [2024-11-28 04:50:37,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:37,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 93 proven. 177 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-11-28 04:50:39,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:39,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165058079] [2024-11-28 04:50:39,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165058079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:39,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588451501] [2024-11-28 04:50:39,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:39,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:39,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:39,532 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:39,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:50:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:39,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:50:39,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 337 proven. 86 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-11-28 04:50:40,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-11-28 04:50:40,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588451501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:40,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:40,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 9] total 27 [2024-11-28 04:50:40,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165732825] [2024-11-28 04:50:40,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:40,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:50:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:40,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:50:40,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:50:40,466 INFO L87 Difference]: Start difference. First operand 24240 states and 29918 transitions. Second operand has 27 states, 25 states have (on average 8.76) internal successors, (219), 24 states have internal predecessors, (219), 10 states have call successors, (54), 5 states have call predecessors, (54), 9 states have return successors, (53), 10 states have call predecessors, (53), 9 states have call successors, (53) [2024-11-28 04:50:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:52,434 INFO L93 Difference]: Finished difference Result 48520 states and 62299 transitions. [2024-11-28 04:50:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:50:52,435 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 8.76) internal successors, (219), 24 states have internal predecessors, (219), 10 states have call successors, (54), 5 states have call predecessors, (54), 9 states have return successors, (53), 10 states have call predecessors, (53), 9 states have call successors, (53) Word has length 382 [2024-11-28 04:50:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:52,513 INFO L225 Difference]: With dead ends: 48520 [2024-11-28 04:50:52,513 INFO L226 Difference]: Without dead ends: 24756 [2024-11-28 04:50:52,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=403, Invalid=3503, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 04:50:52,547 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 1011 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 3031 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 3419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 3031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:52,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 4493 Invalid, 3419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 3031 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:50:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24756 states. [2024-11-28 04:50:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24756 to 15320. [2024-11-28 04:50:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15320 states, 11884 states have (on average 1.2013631773813531) internal successors, (14277), 12236 states have internal predecessors, (14277), 2206 states have call successors, (2206), 1229 states have call predecessors, (2206), 1229 states have return successors, (2206), 1854 states have call predecessors, (2206), 2206 states have call successors, (2206) [2024-11-28 04:50:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15320 states to 15320 states and 18689 transitions. [2024-11-28 04:50:57,843 INFO L78 Accepts]: Start accepts. Automaton has 15320 states and 18689 transitions. Word has length 382 [2024-11-28 04:50:57,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:57,843 INFO L471 AbstractCegarLoop]: Abstraction has 15320 states and 18689 transitions. [2024-11-28 04:50:57,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 8.76) internal successors, (219), 24 states have internal predecessors, (219), 10 states have call successors, (54), 5 states have call predecessors, (54), 9 states have return successors, (53), 10 states have call predecessors, (53), 9 states have call successors, (53) [2024-11-28 04:50:57,844 INFO L276 IsEmpty]: Start isEmpty. Operand 15320 states and 18689 transitions. [2024-11-28 04:50:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-28 04:50:57,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:57,873 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 10, 9, 8, 8, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:57,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:50:58,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 04:50:58,074 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:58,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash 669850735, now seen corresponding path program 1 times [2024-11-28 04:50:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533954287] [2024-11-28 04:50:58,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:58,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2024-11-28 04:50:58,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533954287] [2024-11-28 04:50:58,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533954287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531638097] [2024-11-28 04:50:58,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:58,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:58,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:58,486 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:58,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e52ff67e-115b-4378-b7a5-ec600bb1c444/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:50:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:58,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:50:58,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 127 proven. 341 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-28 04:50:59,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-11-28 04:51:00,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531638097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:00,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:00,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 12] total 19 [2024-11-28 04:51:00,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140789283] [2024-11-28 04:51:00,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:00,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:51:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:00,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:51:00,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:51:00,167 INFO L87 Difference]: Start difference. First operand 15320 states and 18689 transitions. Second operand has 19 states, 19 states have (on average 15.368421052631579) internal successors, (292), 17 states have internal predecessors, (292), 7 states have call successors, (86), 6 states have call predecessors, (86), 9 states have return successors, (85), 9 states have call predecessors, (85), 7 states have call successors, (85)