./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.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_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1 --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 b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:20:49,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:20:49,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:20:49,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:20:49,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:20:49,524 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:20:49,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:20:49,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:20:49,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:20:49,525 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:20:49,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:20:49,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:20:49,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:20:49,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:20:49,526 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:20:49,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:20:49,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:20:49,527 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:20:49,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:20:49,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:20:49,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:20:49,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:20:49,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:20:49,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:20:49,528 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:20:49,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:20:49,528 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:20:49,528 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:20:49,528 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:20:49,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:20:49,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:20:49,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:20:49,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:20:49,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:20:49,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:20:49,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:20:49,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:20:49,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:20:49,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:20:49,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:20:49,529 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:20:49,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:20:49,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:20:49,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:20:49,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:20:49,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:20:49,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:20:49,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:20:49,530 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_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1 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 -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2024-12-02 06:20:49,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:20:49,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:20:49,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:20:49,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:20:49,750 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:20:49,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-12-02 06:20:52,359 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/data/748a9ea99/b490cc1ca56e4dd68dc6fface29e0ee2/FLAG0f373e10f [2024-12-02 06:20:52,598 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:20:52,599 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-12-02 06:20:52,609 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/data/748a9ea99/b490cc1ca56e4dd68dc6fface29e0ee2/FLAG0f373e10f [2024-12-02 06:20:52,943 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/data/748a9ea99/b490cc1ca56e4dd68dc6fface29e0ee2 [2024-12-02 06:20:52,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:20:52,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:20:52,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:20:52,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:20:52,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:20:52,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:20:52" (1/1) ... [2024-12-02 06:20:52,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48536ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:52, skipping insertion in model container [2024-12-02 06:20:52,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:20:52" (1/1) ... [2024-12-02 06:20:52,966 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:20:53,135 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_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2024-12-02 06:20:53,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:20:53,148 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:20:53,202 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_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2024-12-02 06:20:53,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:20:53,219 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:20:53,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53 WrapperNode [2024-12-02 06:20:53,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:20:53,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:20:53,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:20:53,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:20:53,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,267 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 510 [2024-12-02 06:20:53,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:20:53,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:20:53,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:20:53,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:20:53,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,290 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]. [2024-12-02 06:20:53,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,299 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:20:53,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:20:53,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:20:53,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:20:53,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (1/1) ... [2024-12-02 06:20:53,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:20:53,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:20:53,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:20:53,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:20:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-12-02 06:20:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-12-02 06:20:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:20:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-12-02 06:20:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-12-02 06:20:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-12-02 06:20:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-12-02 06:20:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:20:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:20:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:20:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-12-02 06:20:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-12-02 06:20:53,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:20:53,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:20:53,371 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-12-02 06:20:53,371 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-12-02 06:20:53,456 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:20:53,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:20:53,959 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-12-02 06:20:53,959 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:20:53,971 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:20:53,972 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 06:20:53,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:20:53 BoogieIcfgContainer [2024-12-02 06:20:53,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:20:53,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:20:53,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:20:53,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:20:53,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:20:52" (1/3) ... [2024-12-02 06:20:53,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b7b0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:20:53, skipping insertion in model container [2024-12-02 06:20:53,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:53" (2/3) ... [2024-12-02 06:20:53,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b7b0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:20:53, skipping insertion in model container [2024-12-02 06:20:53,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:20:53" (3/3) ... [2024-12-02 06:20:53,979 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-12-02 06:20:53,993 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:20:53,996 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c that has 7 procedures, 175 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:20:54,050 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:20:54,061 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;@5bf6e351, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:20:54,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:20:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 138 states have (on average 1.5579710144927537) internal successors, (215), 139 states have internal predecessors, (215), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-12-02 06:20:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 06:20:54,071 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:54,072 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] [2024-12-02 06:20:54,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:54,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:54,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1828065828, now seen corresponding path program 1 times [2024-12-02 06:20:54,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:54,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232936695] [2024-12-02 06:20:54,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:54,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:54,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:54,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232936695] [2024-12-02 06:20:54,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232936695] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:54,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:54,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:20:54,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364563521] [2024-12-02 06:20:54,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:54,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:20:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:54,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:20:54,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:20:54,317 INFO L87 Difference]: Start difference. First operand has 175 states, 138 states have (on average 1.5579710144927537) internal successors, (215), 139 states have internal predecessors, (215), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 06:20:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:54,354 INFO L93 Difference]: Finished difference Result 334 states and 546 transitions. [2024-12-02 06:20:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:20:54,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-12-02 06:20:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:54,362 INFO L225 Difference]: With dead ends: 334 [2024-12-02 06:20:54,363 INFO L226 Difference]: Without dead ends: 171 [2024-12-02 06:20:54,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:20:54,368 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:54,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-12-02 06:20:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-12-02 06:20:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 135 states have (on average 1.5407407407407407) internal successors, (208), 135 states have internal predecessors, (208), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-12-02 06:20:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 266 transitions. [2024-12-02 06:20:54,409 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 266 transitions. Word has length 29 [2024-12-02 06:20:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:54,410 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 266 transitions. [2024-12-02 06:20:54,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 06:20:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 266 transitions. [2024-12-02 06:20:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 06:20:54,411 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:54,411 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] [2024-12-02 06:20:54,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:20:54,412 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:54,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash 22627494, now seen corresponding path program 1 times [2024-12-02 06:20:54,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60138124] [2024-12-02 06:20:54,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:54,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60138124] [2024-12-02 06:20:54,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60138124] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:54,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:54,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:20:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271215572] [2024-12-02 06:20:54,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:54,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:20:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:54,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:20:54,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:20:54,621 INFO L87 Difference]: Start difference. First operand 171 states and 266 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 06:20:54,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:54,751 INFO L93 Difference]: Finished difference Result 440 states and 690 transitions. [2024-12-02 06:20:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:20:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-12-02 06:20:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:54,754 INFO L225 Difference]: With dead ends: 440 [2024-12-02 06:20:54,754 INFO L226 Difference]: Without dead ends: 283 [2024-12-02 06:20:54,756 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 [2024-12-02 06:20:54,756 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 135 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:54,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1277 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:20:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-12-02 06:20:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 171. [2024-12-02 06:20:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 135 states have (on average 1.451851851851852) internal successors, (196), 135 states have internal predecessors, (196), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-12-02 06:20:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 254 transitions. [2024-12-02 06:20:54,776 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 254 transitions. Word has length 29 [2024-12-02 06:20:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:54,776 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 254 transitions. [2024-12-02 06:20:54,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 06:20:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 254 transitions. [2024-12-02 06:20:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 06:20:54,777 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:54,778 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:54,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:20:54,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:54,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash -526837142, now seen corresponding path program 1 times [2024-12-02 06:20:54,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:54,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635019986] [2024-12-02 06:20:54,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:54,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:55,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635019986] [2024-12-02 06:20:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635019986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:55,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:55,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:20:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947819906] [2024-12-02 06:20:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:55,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:20:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:55,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:20:55,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:20:55,002 INFO L87 Difference]: Start difference. First operand 171 states and 254 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 06:20:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:55,058 INFO L93 Difference]: Finished difference Result 329 states and 498 transitions. [2024-12-02 06:20:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:20:55,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-12-02 06:20:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:55,060 INFO L225 Difference]: With dead ends: 329 [2024-12-02 06:20:55,060 INFO L226 Difference]: Without dead ends: 175 [2024-12-02 06:20:55,061 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 [2024-12-02 06:20:55,062 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:55,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 734 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-12-02 06:20:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-12-02 06:20:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.4420289855072463) internal successors, (199), 138 states have internal predecessors, (199), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-12-02 06:20:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 257 transitions. [2024-12-02 06:20:55,075 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 257 transitions. Word has length 40 [2024-12-02 06:20:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:55,076 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 257 transitions. [2024-12-02 06:20:55,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 06:20:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 257 transitions. [2024-12-02 06:20:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 06:20:55,077 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:55,077 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:55,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:20:55,078 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:55,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash -285453576, now seen corresponding path program 1 times [2024-12-02 06:20:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:55,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712101612] [2024-12-02 06:20:55,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:55,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:55,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:55,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712101612] [2024-12-02 06:20:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712101612] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:55,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:55,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581933945] [2024-12-02 06:20:55,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:55,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:55,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:55,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:55,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:55,173 INFO L87 Difference]: Start difference. First operand 175 states and 257 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:55,213 INFO L93 Difference]: Finished difference Result 482 states and 719 transitions. [2024-12-02 06:20:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:55,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-12-02 06:20:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:55,216 INFO L225 Difference]: With dead ends: 482 [2024-12-02 06:20:55,216 INFO L226 Difference]: Without dead ends: 324 [2024-12-02 06:20:55,217 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 [2024-12-02 06:20:55,218 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 210 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:55,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 505 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-12-02 06:20:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2024-12-02 06:20:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 245 states have (on average 1.4653061224489796) internal successors, (359), 246 states have internal predecessors, (359), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-12-02 06:20:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 473 transitions. [2024-12-02 06:20:55,247 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 473 transitions. Word has length 56 [2024-12-02 06:20:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:55,247 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 473 transitions. [2024-12-02 06:20:55,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 473 transitions. [2024-12-02 06:20:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 06:20:55,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:55,249 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:55,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:20:55,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:55,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:55,249 INFO L85 PathProgramCache]: Analyzing trace with hash 231641109, now seen corresponding path program 1 times [2024-12-02 06:20:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:55,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893111383] [2024-12-02 06:20:55,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:55,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:55,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:55,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893111383] [2024-12-02 06:20:55,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893111383] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:55,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:55,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:55,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214554869] [2024-12-02 06:20:55,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:55,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:55,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:55,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:55,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:55,346 INFO L87 Difference]: Start difference. First operand 317 states and 473 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:55,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:55,406 INFO L93 Difference]: Finished difference Result 893 states and 1343 transitions. [2024-12-02 06:20:55,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:55,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-12-02 06:20:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:55,412 INFO L225 Difference]: With dead ends: 893 [2024-12-02 06:20:55,412 INFO L226 Difference]: Without dead ends: 593 [2024-12-02 06:20:55,413 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 [2024-12-02 06:20:55,414 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 206 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:55,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 522 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-12-02 06:20:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 576. [2024-12-02 06:20:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 434 states have (on average 1.4723502304147464) internal successors, (639), 437 states have internal predecessors, (639), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-12-02 06:20:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 865 transitions. [2024-12-02 06:20:55,464 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 865 transitions. Word has length 57 [2024-12-02 06:20:55,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:55,465 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 865 transitions. [2024-12-02 06:20:55,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:55,465 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 865 transitions. [2024-12-02 06:20:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 06:20:55,476 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:55,476 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:55,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:20:55,476 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:55,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1048222569, now seen corresponding path program 1 times [2024-12-02 06:20:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189071922] [2024-12-02 06:20:55,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:55,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:55,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189071922] [2024-12-02 06:20:55,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189071922] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:55,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:55,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:55,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941944051] [2024-12-02 06:20:55,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:55,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:55,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:55,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:55,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:55,627 INFO L87 Difference]: Start difference. First operand 576 states and 865 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:55,819 INFO L93 Difference]: Finished difference Result 1229 states and 1844 transitions. [2024-12-02 06:20:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:20:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-12-02 06:20:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:55,825 INFO L225 Difference]: With dead ends: 1229 [2024-12-02 06:20:55,825 INFO L226 Difference]: Without dead ends: 670 [2024-12-02 06:20:55,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:20:55,827 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 352 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:55,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 648 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:20:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-12-02 06:20:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 654. [2024-12-02 06:20:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 504 states have (on average 1.4583333333333333) internal successors, (735), 507 states have internal predecessors, (735), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 06:20:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 969 transitions. [2024-12-02 06:20:55,881 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 969 transitions. Word has length 57 [2024-12-02 06:20:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:55,881 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 969 transitions. [2024-12-02 06:20:55,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 969 transitions. [2024-12-02 06:20:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 06:20:55,883 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:55,883 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:55,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:20:55,883 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:55,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 142075639, now seen corresponding path program 1 times [2024-12-02 06:20:55,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:55,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838731883] [2024-12-02 06:20:55,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:56,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838731883] [2024-12-02 06:20:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838731883] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:56,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:56,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157278940] [2024-12-02 06:20:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:56,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:56,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:56,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:56,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:56,028 INFO L87 Difference]: Start difference. First operand 654 states and 969 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:56,213 INFO L93 Difference]: Finished difference Result 1233 states and 1844 transitions. [2024-12-02 06:20:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:20:56,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2024-12-02 06:20:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:56,217 INFO L225 Difference]: With dead ends: 1233 [2024-12-02 06:20:56,217 INFO L226 Difference]: Without dead ends: 674 [2024-12-02 06:20:56,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:20:56,219 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 352 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:56,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 648 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:20:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-12-02 06:20:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 662. [2024-12-02 06:20:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 512 states have (on average 1.451171875) internal successors, (743), 515 states have internal predecessors, (743), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 06:20:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 977 transitions. [2024-12-02 06:20:56,271 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 977 transitions. Word has length 58 [2024-12-02 06:20:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:56,272 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 977 transitions. [2024-12-02 06:20:56,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 977 transitions. [2024-12-02 06:20:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 06:20:56,273 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:56,273 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:56,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:20:56,273 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:56,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 496080585, now seen corresponding path program 1 times [2024-12-02 06:20:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003289546] [2024-12-02 06:20:56,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:56,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003289546] [2024-12-02 06:20:56,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003289546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:56,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:56,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:20:56,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653817086] [2024-12-02 06:20:56,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:56,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:20:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:56,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:20:56,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:20:56,424 INFO L87 Difference]: Start difference. First operand 662 states and 977 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:56,563 INFO L93 Difference]: Finished difference Result 1221 states and 1824 transitions. [2024-12-02 06:20:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:20:56,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-12-02 06:20:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:56,567 INFO L225 Difference]: With dead ends: 1221 [2024-12-02 06:20:56,567 INFO L226 Difference]: Without dead ends: 662 [2024-12-02 06:20:56,568 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 [2024-12-02 06:20:56,569 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 52 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:56,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 646 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:20:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-12-02 06:20:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-12-02 06:20:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 512 states have (on average 1.443359375) internal successors, (739), 515 states have internal predecessors, (739), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 06:20:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 973 transitions. [2024-12-02 06:20:56,603 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 973 transitions. Word has length 60 [2024-12-02 06:20:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:56,603 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 973 transitions. [2024-12-02 06:20:56,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:20:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 973 transitions. [2024-12-02 06:20:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 06:20:56,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:56,604 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:20:56,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:20:56,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:56,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:56,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1746874331, now seen corresponding path program 1 times [2024-12-02 06:20:56,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:56,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504833162] [2024-12-02 06:20:56,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:56,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:56,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504833162] [2024-12-02 06:20:56,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504833162] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:56,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:56,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:20:56,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451893265] [2024-12-02 06:20:56,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:56,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:20:56,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:56,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:20:56,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:20:56,744 INFO L87 Difference]: Start difference. First operand 662 states and 973 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 06:20:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:56,798 INFO L93 Difference]: Finished difference Result 1241 states and 1848 transitions. [2024-12-02 06:20:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:20:56,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 61 [2024-12-02 06:20:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:56,802 INFO L225 Difference]: With dead ends: 1241 [2024-12-02 06:20:56,802 INFO L226 Difference]: Without dead ends: 682 [2024-12-02 06:20:56,804 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 [2024-12-02 06:20:56,804 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:56,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 746 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-12-02 06:20:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2024-12-02 06:20:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 528 states have (on average 1.4299242424242424) internal successors, (755), 531 states have internal predecessors, (755), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 06:20:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 989 transitions. [2024-12-02 06:20:56,839 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 989 transitions. Word has length 61 [2024-12-02 06:20:56,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:56,840 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 989 transitions. [2024-12-02 06:20:56,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 06:20:56,840 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 989 transitions. [2024-12-02 06:20:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:20:56,841 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:56,841 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:20:56,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:20:56,841 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:56,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:56,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1835268779, now seen corresponding path program 1 times [2024-12-02 06:20:56,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:56,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779869930] [2024-12-02 06:20:56,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779869930] [2024-12-02 06:20:57,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779869930] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:57,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:57,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:20:57,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636971725] [2024-12-02 06:20:57,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:57,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:20:57,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:57,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:20:57,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:20:57,036 INFO L87 Difference]: Start difference. First operand 682 states and 989 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:20:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:57,131 INFO L93 Difference]: Finished difference Result 1281 states and 1892 transitions. [2024-12-02 06:20:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:20:57,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2024-12-02 06:20:57,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:57,136 INFO L225 Difference]: With dead ends: 1281 [2024-12-02 06:20:57,136 INFO L226 Difference]: Without dead ends: 702 [2024-12-02 06:20:57,138 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 [2024-12-02 06:20:57,138 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 4 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:57,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 732 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-12-02 06:20:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2024-12-02 06:20:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 544 states have (on average 1.4172794117647058) internal successors, (771), 547 states have internal predecessors, (771), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 06:20:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1005 transitions. [2024-12-02 06:20:57,197 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1005 transitions. Word has length 69 [2024-12-02 06:20:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:57,197 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 1005 transitions. [2024-12-02 06:20:57,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:20:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1005 transitions. [2024-12-02 06:20:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:20:57,199 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:57,199 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:20:57,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:20:57,199 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:57,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1392802347, now seen corresponding path program 1 times [2024-12-02 06:20:57,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:57,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664576770] [2024-12-02 06:20:57,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:57,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:57,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:57,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664576770] [2024-12-02 06:20:57,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664576770] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:57,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:57,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:20:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210200520] [2024-12-02 06:20:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:57,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:20:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:57,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:20:57,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:20:57,372 INFO L87 Difference]: Start difference. First operand 702 states and 1005 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 06:20:57,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:57,448 INFO L93 Difference]: Finished difference Result 1317 states and 1908 transitions. [2024-12-02 06:20:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:20:57,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-12-02 06:20:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:57,453 INFO L225 Difference]: With dead ends: 1317 [2024-12-02 06:20:57,454 INFO L226 Difference]: Without dead ends: 718 [2024-12-02 06:20:57,455 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 [2024-12-02 06:20:57,456 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 3 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:57,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 742 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-12-02 06:20:57,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2024-12-02 06:20:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 556 states have (on average 1.408273381294964) internal successors, (783), 559 states have internal predecessors, (783), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 06:20:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1017 transitions. [2024-12-02 06:20:57,516 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1017 transitions. Word has length 77 [2024-12-02 06:20:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:57,517 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1017 transitions. [2024-12-02 06:20:57,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 06:20:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1017 transitions. [2024-12-02 06:20:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:20:57,518 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:57,518 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:20:57,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:20:57,518 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:57,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:57,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1003656956, now seen corresponding path program 1 times [2024-12-02 06:20:57,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:57,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713909315] [2024-12-02 06:20:57,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:57,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:20:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713909315] [2024-12-02 06:20:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713909315] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:57,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:57,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:20:57,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295227081] [2024-12-02 06:20:57,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:57,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:20:57,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:57,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:20:57,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:20:57,645 INFO L87 Difference]: Start difference. First operand 718 states and 1017 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 06:20:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:57,719 INFO L93 Difference]: Finished difference Result 1353 states and 1948 transitions. [2024-12-02 06:20:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:20:57,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-12-02 06:20:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:57,723 INFO L225 Difference]: With dead ends: 1353 [2024-12-02 06:20:57,723 INFO L226 Difference]: Without dead ends: 738 [2024-12-02 06:20:57,725 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 [2024-12-02 06:20:57,725 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 4 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:57,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 732 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:57,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-12-02 06:20:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2024-12-02 06:20:57,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 572 states have (on average 1.3968531468531469) internal successors, (799), 575 states have internal predecessors, (799), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 06:20:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1033 transitions. [2024-12-02 06:20:57,758 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1033 transitions. Word has length 77 [2024-12-02 06:20:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:57,758 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1033 transitions. [2024-12-02 06:20:57,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 06:20:57,759 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1033 transitions. [2024-12-02 06:20:57,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 06:20:57,760 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:57,760 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:57,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:20:57,761 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:57,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash 623136640, now seen corresponding path program 1 times [2024-12-02 06:20:57,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:57,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842326577] [2024-12-02 06:20:57,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 06:20:57,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:57,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842326577] [2024-12-02 06:20:57,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842326577] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:57,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:57,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:20:57,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145965032] [2024-12-02 06:20:57,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:57,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:20:57,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:57,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:20:57,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:20:57,947 INFO L87 Difference]: Start difference. First operand 738 states and 1033 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 06:20:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:58,047 INFO L93 Difference]: Finished difference Result 1397 states and 1976 transitions. [2024-12-02 06:20:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:20:58,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 85 [2024-12-02 06:20:58,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:58,053 INFO L225 Difference]: With dead ends: 1397 [2024-12-02 06:20:58,053 INFO L226 Difference]: Without dead ends: 762 [2024-12-02 06:20:58,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:58,055 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 5 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:58,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 744 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:58,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-12-02 06:20:58,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2024-12-02 06:20:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 592 states have (on average 1.383445945945946) internal successors, (819), 595 states have internal predecessors, (819), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-12-02 06:20:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1053 transitions. [2024-12-02 06:20:58,133 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1053 transitions. Word has length 85 [2024-12-02 06:20:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:58,134 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 1053 transitions. [2024-12-02 06:20:58,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 06:20:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1053 transitions. [2024-12-02 06:20:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 06:20:58,137 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:58,137 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:58,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:20:58,137 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:58,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:58,137 INFO L85 PathProgramCache]: Analyzing trace with hash 412345962, now seen corresponding path program 1 times [2024-12-02 06:20:58,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:58,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791377437] [2024-12-02 06:20:58,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:58,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:20:58,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:58,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791377437] [2024-12-02 06:20:58,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791377437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:58,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:58,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:20:58,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969964647] [2024-12-02 06:20:58,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:58,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:20:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:58,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:20:58,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:20:58,729 INFO L87 Difference]: Start difference. First operand 762 states and 1053 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 06:20:59,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:59,005 INFO L93 Difference]: Finished difference Result 1990 states and 2738 transitions. [2024-12-02 06:20:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:20:59,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 88 [2024-12-02 06:20:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:59,010 INFO L225 Difference]: With dead ends: 1990 [2024-12-02 06:20:59,011 INFO L226 Difference]: Without dead ends: 1331 [2024-12-02 06:20:59,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:20:59,012 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 189 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:59,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1442 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:20:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-12-02 06:20:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 915. [2024-12-02 06:20:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 708 states have (on average 1.3728813559322033) internal successors, (972), 712 states have internal predecessors, (972), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-12-02 06:20:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1254 transitions. [2024-12-02 06:20:59,064 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1254 transitions. Word has length 88 [2024-12-02 06:20:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:59,065 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1254 transitions. [2024-12-02 06:20:59,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 06:20:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1254 transitions. [2024-12-02 06:20:59,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 06:20:59,066 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:59,066 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:59,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:20:59,066 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:59,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:59,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1720810152, now seen corresponding path program 1 times [2024-12-02 06:20:59,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:59,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550518022] [2024-12-02 06:20:59,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:59,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:20:59,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:59,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550518022] [2024-12-02 06:20:59,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550518022] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:59,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:59,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:20:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597523734] [2024-12-02 06:20:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:59,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:20:59,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:59,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:20:59,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:20:59,172 INFO L87 Difference]: Start difference. First operand 915 states and 1254 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 06:20:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:59,238 INFO L93 Difference]: Finished difference Result 1702 states and 2356 transitions. [2024-12-02 06:20:59,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:20:59,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 92 [2024-12-02 06:20:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:59,243 INFO L225 Difference]: With dead ends: 1702 [2024-12-02 06:20:59,243 INFO L226 Difference]: Without dead ends: 935 [2024-12-02 06:20:59,244 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 [2024-12-02 06:20:59,245 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 3 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:59,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 742 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-12-02 06:20:59,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 935. [2024-12-02 06:20:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 723 states have (on average 1.3651452282157677) internal successors, (987), 727 states have internal predecessors, (987), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-12-02 06:20:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1269 transitions. [2024-12-02 06:20:59,308 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1269 transitions. Word has length 92 [2024-12-02 06:20:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:59,308 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1269 transitions. [2024-12-02 06:20:59,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 06:20:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1269 transitions. [2024-12-02 06:20:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 06:20:59,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:59,310 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:59,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:20:59,310 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:59,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2083322699, now seen corresponding path program 1 times [2024-12-02 06:20:59,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:59,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980072122] [2024-12-02 06:20:59,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:59,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 06:20:59,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:59,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980072122] [2024-12-02 06:20:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980072122] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:59,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:59,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:20:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427066575] [2024-12-02 06:20:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:59,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:20:59,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:59,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:20:59,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:20:59,570 INFO L87 Difference]: Start difference. First operand 935 states and 1269 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 06:20:59,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:59,711 INFO L93 Difference]: Finished difference Result 1348 states and 1931 transitions. [2024-12-02 06:20:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:20:59,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-12-02 06:20:59,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:59,719 INFO L225 Difference]: With dead ends: 1348 [2024-12-02 06:20:59,719 INFO L226 Difference]: Without dead ends: 1346 [2024-12-02 06:20:59,720 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 [2024-12-02 06:20:59,721 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 138 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:59,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1997 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2024-12-02 06:20:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 937. [2024-12-02 06:20:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 723 states have (on average 1.3651452282157677) internal successors, (987), 728 states have internal predecessors, (987), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2024-12-02 06:20:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1271 transitions. [2024-12-02 06:20:59,803 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1271 transitions. Word has length 91 [2024-12-02 06:20:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:59,804 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1271 transitions. [2024-12-02 06:20:59,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 06:20:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1271 transitions. [2024-12-02 06:20:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 06:20:59,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:59,805 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:20:59,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:20:59,805 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:59,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 357669874, now seen corresponding path program 1 times [2024-12-02 06:20:59,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:59,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415405325] [2024-12-02 06:20:59,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:59,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 06:20:59,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:59,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415405325] [2024-12-02 06:20:59,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415405325] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:59,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:59,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:20:59,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676598184] [2024-12-02 06:20:59,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:59,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:20:59,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:59,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:20:59,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:20:59,976 INFO L87 Difference]: Start difference. First operand 937 states and 1271 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 06:21:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:00,161 INFO L93 Difference]: Finished difference Result 1747 states and 2388 transitions. [2024-12-02 06:21:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:21:00,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2024-12-02 06:21:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:00,168 INFO L225 Difference]: With dead ends: 1747 [2024-12-02 06:21:00,168 INFO L226 Difference]: Without dead ends: 999 [2024-12-02 06:21:00,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:21:00,170 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 239 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:00,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1447 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:21:00,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2024-12-02 06:21:00,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 957. [2024-12-02 06:21:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 748 states have (on average 1.3596256684491979) internal successors, (1017), 757 states have internal predecessors, (1017), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2024-12-02 06:21:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1289 transitions. [2024-12-02 06:21:00,241 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1289 transitions. Word has length 94 [2024-12-02 06:21:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:00,242 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1289 transitions. [2024-12-02 06:21:00,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 06:21:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1289 transitions. [2024-12-02 06:21:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 06:21:00,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:00,243 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:00,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:21:00,243 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:00,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1829328304, now seen corresponding path program 1 times [2024-12-02 06:21:00,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:00,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449543323] [2024-12-02 06:21:00,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:00,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 06:21:00,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:00,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449543323] [2024-12-02 06:21:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449543323] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:00,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:00,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:21:00,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306033396] [2024-12-02 06:21:00,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:00,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:21:00,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:00,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:21:00,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:21:00,921 INFO L87 Difference]: Start difference. First operand 957 states and 1289 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:21:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:01,145 INFO L93 Difference]: Finished difference Result 1734 states and 2351 transitions. [2024-12-02 06:21:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:21:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-12-02 06:21:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:01,151 INFO L225 Difference]: With dead ends: 1734 [2024-12-02 06:21:01,151 INFO L226 Difference]: Without dead ends: 956 [2024-12-02 06:21:01,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:21:01,153 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 133 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:01,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1527 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:21:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-12-02 06:21:01,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 946. [2024-12-02 06:21:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 740 states have (on average 1.3581081081081081) internal successors, (1005), 749 states have internal predecessors, (1005), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2024-12-02 06:21:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1273 transitions. [2024-12-02 06:21:01,227 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1273 transitions. Word has length 96 [2024-12-02 06:21:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:01,227 INFO L471 AbstractCegarLoop]: Abstraction has 946 states and 1273 transitions. [2024-12-02 06:21:01,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:21:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1273 transitions. [2024-12-02 06:21:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 06:21:01,228 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:01,228 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:01,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:21:01,229 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:01,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash -367688357, now seen corresponding path program 1 times [2024-12-02 06:21:01,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:01,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005666250] [2024-12-02 06:21:01,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:21:01,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:01,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005666250] [2024-12-02 06:21:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005666250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:01,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:01,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:21:01,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525043935] [2024-12-02 06:21:01,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:01,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:21:01,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:01,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:21:01,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:21:01,743 INFO L87 Difference]: Start difference. First operand 946 states and 1273 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:21:02,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:02,177 INFO L93 Difference]: Finished difference Result 1805 states and 2415 transitions. [2024-12-02 06:21:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:21:02,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2024-12-02 06:21:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:02,183 INFO L225 Difference]: With dead ends: 1805 [2024-12-02 06:21:02,183 INFO L226 Difference]: Without dead ends: 1007 [2024-12-02 06:21:02,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:21:02,186 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 400 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:02,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1229 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:21:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2024-12-02 06:21:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 962. [2024-12-02 06:21:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 748 states have (on average 1.3342245989304813) internal successors, (998), 758 states have internal predecessors, (998), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2024-12-02 06:21:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1272 transitions. [2024-12-02 06:21:02,280 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1272 transitions. Word has length 97 [2024-12-02 06:21:02,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:02,280 INFO L471 AbstractCegarLoop]: Abstraction has 962 states and 1272 transitions. [2024-12-02 06:21:02,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:21:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1272 transitions. [2024-12-02 06:21:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 06:21:02,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:02,282 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:02,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:21:02,282 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:02,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash -929322109, now seen corresponding path program 1 times [2024-12-02 06:21:02,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:02,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667728197] [2024-12-02 06:21:02,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:21:02,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:02,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667728197] [2024-12-02 06:21:02,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667728197] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:02,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:02,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:21:02,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263772524] [2024-12-02 06:21:02,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:02,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:21:02,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:02,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:21:02,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:21:02,377 INFO L87 Difference]: Start difference. First operand 962 states and 1272 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:02,523 INFO L93 Difference]: Finished difference Result 2541 states and 3380 transitions. [2024-12-02 06:21:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:21:02,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2024-12-02 06:21:02,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:02,530 INFO L225 Difference]: With dead ends: 2541 [2024-12-02 06:21:02,530 INFO L226 Difference]: Without dead ends: 1778 [2024-12-02 06:21:02,532 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 [2024-12-02 06:21:02,532 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 194 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:02,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1114 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2024-12-02 06:21:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1543. [2024-12-02 06:21:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1186 states have (on average 1.3288364249578415) internal successors, (1576), 1202 states have internal predecessors, (1576), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2024-12-02 06:21:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2038 transitions. [2024-12-02 06:21:02,626 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2038 transitions. Word has length 98 [2024-12-02 06:21:02,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:02,627 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 2038 transitions. [2024-12-02 06:21:02,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2038 transitions. [2024-12-02 06:21:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 06:21:02,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:02,628 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:02,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:21:02,628 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:02,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1010941784, now seen corresponding path program 1 times [2024-12-02 06:21:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:02,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756084892] [2024-12-02 06:21:02,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:02,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:21:03,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:03,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756084892] [2024-12-02 06:21:03,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756084892] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:03,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:03,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:21:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31887848] [2024-12-02 06:21:03,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:03,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:21:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:03,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:21:03,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:21:03,081 INFO L87 Difference]: Start difference. First operand 1543 states and 2038 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:03,660 INFO L93 Difference]: Finished difference Result 3149 states and 4154 transitions. [2024-12-02 06:21:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:21:03,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-12-02 06:21:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:03,670 INFO L225 Difference]: With dead ends: 3149 [2024-12-02 06:21:03,670 INFO L226 Difference]: Without dead ends: 1883 [2024-12-02 06:21:03,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:21:03,674 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 506 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:03,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1325 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:21:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2024-12-02 06:21:03,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1568. [2024-12-02 06:21:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1198 states have (on average 1.32220367278798) internal successors, (1584), 1215 states have internal predecessors, (1584), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2024-12-02 06:21:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2062 transitions. [2024-12-02 06:21:03,860 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2062 transitions. Word has length 100 [2024-12-02 06:21:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:03,860 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 2062 transitions. [2024-12-02 06:21:03,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2062 transitions. [2024-12-02 06:21:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 06:21:03,862 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:03,862 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:03,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 06:21:03,862 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:03,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash 801512900, now seen corresponding path program 1 times [2024-12-02 06:21:03,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:03,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440476592] [2024-12-02 06:21:03,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:03,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:21:03,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:03,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440476592] [2024-12-02 06:21:03,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440476592] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:03,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:03,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:21:03,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697918403] [2024-12-02 06:21:03,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:03,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:21:03,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:03,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:21:03,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:21:03,959 INFO L87 Difference]: Start difference. First operand 1568 states and 2062 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:04,285 INFO L93 Difference]: Finished difference Result 3910 states and 5174 transitions. [2024-12-02 06:21:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:21:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-12-02 06:21:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:04,299 INFO L225 Difference]: With dead ends: 3910 [2024-12-02 06:21:04,299 INFO L226 Difference]: Without dead ends: 2660 [2024-12-02 06:21:04,303 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 [2024-12-02 06:21:04,304 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 200 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:04,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1152 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2024-12-02 06:21:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2457. [2024-12-02 06:21:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 1850 states have (on average 1.3129729729729729) internal successors, (2429), 1877 states have internal predecessors, (2429), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-12-02 06:21:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3217 transitions. [2024-12-02 06:21:04,642 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3217 transitions. Word has length 102 [2024-12-02 06:21:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:04,642 INFO L471 AbstractCegarLoop]: Abstraction has 2457 states and 3217 transitions. [2024-12-02 06:21:04,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:04,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3217 transitions. [2024-12-02 06:21:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 06:21:04,645 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:04,645 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:04,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 06:21:04,645 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:04,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:04,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1738074819, now seen corresponding path program 1 times [2024-12-02 06:21:04,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:04,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141162156] [2024-12-02 06:21:04,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:04,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:21:04,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:04,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141162156] [2024-12-02 06:21:04,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141162156] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:04,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:04,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:21:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541956639] [2024-12-02 06:21:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:04,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:21:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:04,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:21:04,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:21:04,730 INFO L87 Difference]: Start difference. First operand 2457 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:05,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:05,065 INFO L93 Difference]: Finished difference Result 4714 states and 6197 transitions. [2024-12-02 06:21:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:21:05,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-12-02 06:21:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:05,078 INFO L225 Difference]: With dead ends: 4714 [2024-12-02 06:21:05,078 INFO L226 Difference]: Without dead ends: 2466 [2024-12-02 06:21:05,084 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 [2024-12-02 06:21:05,084 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 3 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:05,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 470 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2024-12-02 06:21:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2460. [2024-12-02 06:21:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 1853 states have (on average 1.3124662709120345) internal successors, (2432), 1880 states have internal predecessors, (2432), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-12-02 06:21:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3220 transitions. [2024-12-02 06:21:05,358 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3220 transitions. Word has length 102 [2024-12-02 06:21:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:05,358 INFO L471 AbstractCegarLoop]: Abstraction has 2460 states and 3220 transitions. [2024-12-02 06:21:05,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3220 transitions. [2024-12-02 06:21:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 06:21:05,360 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:05,360 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:05,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 06:21:05,360 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:05,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:05,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1928006348, now seen corresponding path program 1 times [2024-12-02 06:21:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:05,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353441355] [2024-12-02 06:21:05,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:21:05,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:05,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353441355] [2024-12-02 06:21:05,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353441355] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:05,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:05,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:21:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124492081] [2024-12-02 06:21:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:05,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:21:05,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:05,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:21:05,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:21:05,460 INFO L87 Difference]: Start difference. First operand 2460 states and 3220 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:05,875 INFO L93 Difference]: Finished difference Result 5839 states and 7681 transitions. [2024-12-02 06:21:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:21:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-12-02 06:21:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:05,892 INFO L225 Difference]: With dead ends: 5839 [2024-12-02 06:21:05,892 INFO L226 Difference]: Without dead ends: 3818 [2024-12-02 06:21:05,896 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 [2024-12-02 06:21:05,897 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 193 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:05,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1166 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2024-12-02 06:21:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3381. [2024-12-02 06:21:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 2535 states have (on average 1.3088757396449704) internal successors, (3318), 2572 states have internal predecessors, (3318), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2024-12-02 06:21:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4420 transitions. [2024-12-02 06:21:06,253 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4420 transitions. Word has length 102 [2024-12-02 06:21:06,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:06,253 INFO L471 AbstractCegarLoop]: Abstraction has 3381 states and 4420 transitions. [2024-12-02 06:21:06,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4420 transitions. [2024-12-02 06:21:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:21:06,256 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:06,256 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:06,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 06:21:06,257 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:06,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:06,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1625051608, now seen corresponding path program 1 times [2024-12-02 06:21:06,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:06,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019963054] [2024-12-02 06:21:06,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:06,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:21:06,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:06,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019963054] [2024-12-02 06:21:06,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019963054] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:06,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:06,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:21:06,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323339586] [2024-12-02 06:21:06,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:06,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:21:06,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:06,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:21:06,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:21:06,406 INFO L87 Difference]: Start difference. First operand 3381 states and 4420 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:06,690 INFO L93 Difference]: Finished difference Result 6413 states and 8407 transitions. [2024-12-02 06:21:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:21:06,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2024-12-02 06:21:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:06,707 INFO L225 Difference]: With dead ends: 6413 [2024-12-02 06:21:06,707 INFO L226 Difference]: Without dead ends: 3105 [2024-12-02 06:21:06,714 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 [2024-12-02 06:21:06,714 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 74 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:06,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 731 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2024-12-02 06:21:07,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 3000. [2024-12-02 06:21:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3000 states, 2231 states have (on average 1.3137606454504707) internal successors, (2931), 2255 states have internal predecessors, (2931), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-12-02 06:21:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 3935 transitions. [2024-12-02 06:21:07,147 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 3935 transitions. Word has length 103 [2024-12-02 06:21:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:07,148 INFO L471 AbstractCegarLoop]: Abstraction has 3000 states and 3935 transitions. [2024-12-02 06:21:07,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:07,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 3935 transitions. [2024-12-02 06:21:07,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 06:21:07,149 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:07,149 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:07,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 06:21:07,150 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:07,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash 47232556, now seen corresponding path program 1 times [2024-12-02 06:21:07,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:07,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437962373] [2024-12-02 06:21:07,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:07,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:21:07,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437962373] [2024-12-02 06:21:07,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437962373] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:07,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:07,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:21:07,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564911776] [2024-12-02 06:21:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:07,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:21:07,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:07,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:21:07,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:21:07,210 INFO L87 Difference]: Start difference. First operand 3000 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:07,521 INFO L93 Difference]: Finished difference Result 5846 states and 7700 transitions. [2024-12-02 06:21:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:21:07,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-12-02 06:21:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:07,537 INFO L225 Difference]: With dead ends: 5846 [2024-12-02 06:21:07,537 INFO L226 Difference]: Without dead ends: 3028 [2024-12-02 06:21:07,543 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 [2024-12-02 06:21:07,544 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 4 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:07,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 468 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2024-12-02 06:21:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3007. [2024-12-02 06:21:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 2238 states have (on average 1.3127792672028598) internal successors, (2938), 2262 states have internal predecessors, (2938), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-12-02 06:21:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 3942 transitions. [2024-12-02 06:21:07,846 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 3942 transitions. Word has length 105 [2024-12-02 06:21:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:07,846 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 3942 transitions. [2024-12-02 06:21:07,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 3942 transitions. [2024-12-02 06:21:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 06:21:07,848 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:07,848 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:07,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 06:21:07,848 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:07,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:07,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2011926456, now seen corresponding path program 1 times [2024-12-02 06:21:07,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:07,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414749097] [2024-12-02 06:21:07,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:07,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:21:07,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:07,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414749097] [2024-12-02 06:21:07,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414749097] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:07,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:07,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:21:07,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822964474] [2024-12-02 06:21:07,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:07,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:21:07,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:07,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:21:07,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:21:07,987 INFO L87 Difference]: Start difference. First operand 3007 states and 3942 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:08,278 INFO L93 Difference]: Finished difference Result 5807 states and 7637 transitions. [2024-12-02 06:21:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:21:08,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-12-02 06:21:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:08,293 INFO L225 Difference]: With dead ends: 5807 [2024-12-02 06:21:08,293 INFO L226 Difference]: Without dead ends: 2920 [2024-12-02 06:21:08,297 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 [2024-12-02 06:21:08,298 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 60 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:08,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 723 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:08,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2024-12-02 06:21:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2764. [2024-12-02 06:21:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2054 states have (on average 1.3120740019474197) internal successors, (2695), 2073 states have internal predecessors, (2695), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2024-12-02 06:21:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3623 transitions. [2024-12-02 06:21:08,571 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3623 transitions. Word has length 105 [2024-12-02 06:21:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:08,571 INFO L471 AbstractCegarLoop]: Abstraction has 2764 states and 3623 transitions. [2024-12-02 06:21:08,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:21:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3623 transitions. [2024-12-02 06:21:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 06:21:08,576 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:08,576 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 06:21:08,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 06:21:08,577 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:08,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1482752050, now seen corresponding path program 1 times [2024-12-02 06:21:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:08,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992364435] [2024-12-02 06:21:08,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:08,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 06:21:08,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:08,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992364435] [2024-12-02 06:21:08,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992364435] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:08,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789276784] [2024-12-02 06:21:08,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:08,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:08,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:08,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:08,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:21:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:09,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 06:21:09,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 06:21:09,228 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:21:09,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789276784] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:09,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:21:09,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-12-02 06:21:09,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388990401] [2024-12-02 06:21:09,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:09,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:21:09,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:09,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:21:09,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:21:09,230 INFO L87 Difference]: Start difference. First operand 2764 states and 3623 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 06:21:09,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:09,485 INFO L93 Difference]: Finished difference Result 5197 states and 6855 transitions. [2024-12-02 06:21:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:21:09,486 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 156 [2024-12-02 06:21:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:09,496 INFO L225 Difference]: With dead ends: 5197 [2024-12-02 06:21:09,496 INFO L226 Difference]: Without dead ends: 2593 [2024-12-02 06:21:09,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:21:09,502 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:09,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 992 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2024-12-02 06:21:09,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2576. [2024-12-02 06:21:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2576 states, 1911 states have (on average 1.3087388801674515) internal successors, (2501), 1928 states have internal predecessors, (2501), 435 states have call successors, (435), 229 states have call predecessors, (435), 229 states have return successors, (435), 418 states have call predecessors, (435), 435 states have call successors, (435) [2024-12-02 06:21:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3371 transitions. [2024-12-02 06:21:09,734 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3371 transitions. Word has length 156 [2024-12-02 06:21:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:09,734 INFO L471 AbstractCegarLoop]: Abstraction has 2576 states and 3371 transitions. [2024-12-02 06:21:09,734 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 06:21:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3371 transitions. [2024-12-02 06:21:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 06:21:09,739 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:09,740 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 06:21:09,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:21:09,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 06:21:09,940 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:09,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1022887034, now seen corresponding path program 1 times [2024-12-02 06:21:09,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:09,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814903378] [2024-12-02 06:21:09,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:09,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 06:21:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814903378] [2024-12-02 06:21:10,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814903378] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3246779] [2024-12-02 06:21:10,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:10,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:10,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:10,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:10,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:21:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:10,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:21:10,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 06:21:11,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 06:21:11,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3246779] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:11,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:11,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-12-02 06:21:11,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651896287] [2024-12-02 06:21:11,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:11,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 06:21:11,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:11,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 06:21:11,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:21:11,650 INFO L87 Difference]: Start difference. First operand 2576 states and 3371 transitions. Second operand has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-12-02 06:21:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:15,635 INFO L93 Difference]: Finished difference Result 7502 states and 9849 transitions. [2024-12-02 06:21:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-12-02 06:21:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 158 [2024-12-02 06:21:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:15,648 INFO L225 Difference]: With dead ends: 7502 [2024-12-02 06:21:15,648 INFO L226 Difference]: Without dead ends: 5153 [2024-12-02 06:21:15,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=985, Invalid=5495, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 06:21:15,653 INFO L435 NwaCegarLoop]: 630 mSDtfsCounter, 2559 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:15,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 5977 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 06:21:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5153 states. [2024-12-02 06:21:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5153 to 4499. [2024-12-02 06:21:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 3339 states have (on average 1.3111710092842168) internal successors, (4378), 3368 states have internal predecessors, (4378), 755 states have call successors, (755), 404 states have call predecessors, (755), 404 states have return successors, (755), 726 states have call predecessors, (755), 755 states have call successors, (755) [2024-12-02 06:21:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 5888 transitions. [2024-12-02 06:21:16,056 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 5888 transitions. Word has length 158 [2024-12-02 06:21:16,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:16,057 INFO L471 AbstractCegarLoop]: Abstraction has 4499 states and 5888 transitions. [2024-12-02 06:21:16,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-12-02 06:21:16,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 5888 transitions. [2024-12-02 06:21:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 06:21:16,060 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:16,060 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:16,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:21:16,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 06:21:16,261 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:16,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:16,261 INFO L85 PathProgramCache]: Analyzing trace with hash -433770960, now seen corresponding path program 1 times [2024-12-02 06:21:16,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:16,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340413710] [2024-12-02 06:21:16,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:16,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 06:21:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340413710] [2024-12-02 06:21:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340413710] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282734804] [2024-12-02 06:21:16,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:16,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:16,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:16,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:16,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:21:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:16,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 06:21:16,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 06:21:17,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 06:21:17,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282734804] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:17,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:17,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 22 [2024-12-02 06:21:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518030687] [2024-12-02 06:21:17,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:17,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 06:21:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:17,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 06:21:17,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:21:17,954 INFO L87 Difference]: Start difference. First operand 4499 states and 5888 transitions. Second operand has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-12-02 06:21:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:20,433 INFO L93 Difference]: Finished difference Result 10626 states and 13900 transitions. [2024-12-02 06:21:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 06:21:20,434 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 159 [2024-12-02 06:21:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:20,450 INFO L225 Difference]: With dead ends: 10626 [2024-12-02 06:21:20,450 INFO L226 Difference]: Without dead ends: 6373 [2024-12-02 06:21:20,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=851, Invalid=2455, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 06:21:20,457 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 1974 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:20,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 2634 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 06:21:20,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2024-12-02 06:21:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 6061. [2024-12-02 06:21:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 4495 states have (on average 1.3036707452725251) internal successors, (5860), 4535 states have internal predecessors, (5860), 1012 states have call successors, (1012), 553 states have call predecessors, (1012), 553 states have return successors, (1012), 972 states have call predecessors, (1012), 1012 states have call successors, (1012) [2024-12-02 06:21:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 7884 transitions. [2024-12-02 06:21:21,078 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 7884 transitions. Word has length 159 [2024-12-02 06:21:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:21,078 INFO L471 AbstractCegarLoop]: Abstraction has 6061 states and 7884 transitions. [2024-12-02 06:21:21,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 9 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2024-12-02 06:21:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 7884 transitions. [2024-12-02 06:21:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 06:21:21,083 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:21,083 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:21,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:21:21,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:21,284 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:21,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:21,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2138901226, now seen corresponding path program 1 times [2024-12-02 06:21:21,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:21,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887151642] [2024-12-02 06:21:21,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:21,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-12-02 06:21:21,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:21,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887151642] [2024-12-02 06:21:21,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887151642] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:21,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:21,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:21:21,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30149388] [2024-12-02 06:21:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:21,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:21:21,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:21,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:21:21,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:21:21,481 INFO L87 Difference]: Start difference. First operand 6061 states and 7884 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 06:21:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:22,996 INFO L93 Difference]: Finished difference Result 17771 states and 23180 transitions. [2024-12-02 06:21:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:21:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 161 [2024-12-02 06:21:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:23,032 INFO L225 Difference]: With dead ends: 17771 [2024-12-02 06:21:23,032 INFO L226 Difference]: Without dead ends: 12016 [2024-12-02 06:21:23,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:21:23,042 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 216 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:23,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2500 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:21:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2024-12-02 06:21:24,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 8545. [2024-12-02 06:21:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 6283 states have (on average 1.30208499124622) internal successors, (8181), 6341 states have internal predecessors, (8181), 1476 states have call successors, (1476), 785 states have call predecessors, (1476), 785 states have return successors, (1476), 1418 states have call predecessors, (1476), 1476 states have call successors, (1476) [2024-12-02 06:21:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 11133 transitions. [2024-12-02 06:21:24,123 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 11133 transitions. Word has length 161 [2024-12-02 06:21:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:24,123 INFO L471 AbstractCegarLoop]: Abstraction has 8545 states and 11133 transitions. [2024-12-02 06:21:24,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 06:21:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 11133 transitions. [2024-12-02 06:21:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 06:21:24,131 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:24,131 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:24,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 06:21:24,132 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:24,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash -816805592, now seen corresponding path program 1 times [2024-12-02 06:21:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:24,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583834568] [2024-12-02 06:21:24,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:24,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-12-02 06:21:24,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:24,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583834568] [2024-12-02 06:21:24,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583834568] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:24,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727357783] [2024-12-02 06:21:24,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:24,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:24,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:24,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:24,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:21:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:24,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 06:21:24,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 59 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 06:21:25,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 06:21:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727357783] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:26,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:26,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 27 [2024-12-02 06:21:26,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698199836] [2024-12-02 06:21:26,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:26,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 06:21:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:26,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 06:21:26,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-12-02 06:21:26,479 INFO L87 Difference]: Start difference. First operand 8545 states and 11133 transitions. Second operand has 27 states, 26 states have (on average 9.884615384615385) internal successors, (257), 25 states have internal predecessors, (257), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) [2024-12-02 06:21:30,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:30,936 INFO L93 Difference]: Finished difference Result 23864 states and 31018 transitions. [2024-12-02 06:21:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 06:21:30,936 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 9.884615384615385) internal successors, (257), 25 states have internal predecessors, (257), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) Word has length 161 [2024-12-02 06:21:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:30,971 INFO L225 Difference]: With dead ends: 23864 [2024-12-02 06:21:30,972 INFO L226 Difference]: Without dead ends: 15574 [2024-12-02 06:21:30,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=549, Invalid=3233, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 06:21:30,985 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 1587 mSDsluCounter, 5490 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 5928 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:30,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 5928 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 06:21:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15574 states. [2024-12-02 06:21:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15574 to 10282. [2024-12-02 06:21:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10282 states, 7550 states have (on average 1.299867549668874) internal successors, (9814), 7625 states have internal predecessors, (9814), 1770 states have call successors, (1770), 961 states have call predecessors, (1770), 961 states have return successors, (1770), 1695 states have call predecessors, (1770), 1770 states have call successors, (1770) [2024-12-02 06:21:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10282 states to 10282 states and 13354 transitions. [2024-12-02 06:21:32,852 INFO L78 Accepts]: Start accepts. Automaton has 10282 states and 13354 transitions. Word has length 161 [2024-12-02 06:21:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:32,853 INFO L471 AbstractCegarLoop]: Abstraction has 10282 states and 13354 transitions. [2024-12-02 06:21:32,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 9.884615384615385) internal successors, (257), 25 states have internal predecessors, (257), 8 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 8 states have call successors, (35) [2024-12-02 06:21:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10282 states and 13354 transitions. [2024-12-02 06:21:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 06:21:32,857 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:32,857 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:32,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:21:33,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 06:21:33,058 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:33,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash -617720995, now seen corresponding path program 1 times [2024-12-02 06:21:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220241003] [2024-12-02 06:21:33,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 06:21:33,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:33,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220241003] [2024-12-02 06:21:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220241003] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:33,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473894479] [2024-12-02 06:21:33,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:33,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:33,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:33,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:33,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:21:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:33,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:21:33,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 71 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 06:21:34,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 06:21:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473894479] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:34,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:34,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2024-12-02 06:21:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930268897] [2024-12-02 06:21:34,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:34,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 06:21:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:34,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 06:21:34,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:21:34,595 INFO L87 Difference]: Start difference. First operand 10282 states and 13354 transitions. Second operand has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-12-02 06:21:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:38,709 INFO L93 Difference]: Finished difference Result 25966 states and 33777 transitions. [2024-12-02 06:21:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-12-02 06:21:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 170 [2024-12-02 06:21:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:38,747 INFO L225 Difference]: With dead ends: 25966 [2024-12-02 06:21:38,747 INFO L226 Difference]: Without dead ends: 15936 [2024-12-02 06:21:38,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=750, Invalid=3156, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 06:21:38,762 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 4369 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 1288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4369 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1288 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:38,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4369 Valid, 3580 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1288 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 06:21:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15936 states. [2024-12-02 06:21:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15936 to 14893. [2024-12-02 06:21:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14893 states, 10903 states have (on average 1.3008346326699074) internal successors, (14183), 11018 states have internal predecessors, (14183), 2586 states have call successors, (2586), 1403 states have call predecessors, (2586), 1403 states have return successors, (2586), 2471 states have call predecessors, (2586), 2586 states have call successors, (2586) [2024-12-02 06:21:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14893 states to 14893 states and 19355 transitions. [2024-12-02 06:21:41,000 INFO L78 Accepts]: Start accepts. Automaton has 14893 states and 19355 transitions. Word has length 170 [2024-12-02 06:21:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:41,000 INFO L471 AbstractCegarLoop]: Abstraction has 14893 states and 19355 transitions. [2024-12-02 06:21:41,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 10 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-12-02 06:21:41,000 INFO L276 IsEmpty]: Start isEmpty. Operand 14893 states and 19355 transitions. [2024-12-02 06:21:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 06:21:41,005 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:41,005 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:41,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:21:41,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 06:21:41,206 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:41,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash -981841377, now seen corresponding path program 1 times [2024-12-02 06:21:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177153228] [2024-12-02 06:21:41,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:41,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 06:21:41,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:41,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177153228] [2024-12-02 06:21:41,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177153228] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:41,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44396169] [2024-12-02 06:21:41,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:41,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:41,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:41,638 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:41,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:21:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:41,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 06:21:41,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 06:21:42,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 06:21:42,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44396169] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:42,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:42,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 18 [2024-12-02 06:21:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371055677] [2024-12-02 06:21:42,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:42,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:21:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:42,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:21:42,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:21:42,567 INFO L87 Difference]: Start difference. First operand 14893 states and 19355 transitions. Second operand has 18 states, 18 states have (on average 13.333333333333334) internal successors, (240), 18 states have internal predecessors, (240), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2024-12-02 06:21:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:47,221 INFO L93 Difference]: Finished difference Result 36856 states and 48048 transitions. [2024-12-02 06:21:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 06:21:47,221 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.333333333333334) internal successors, (240), 18 states have internal predecessors, (240), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 171 [2024-12-02 06:21:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:47,280 INFO L225 Difference]: With dead ends: 36856 [2024-12-02 06:21:47,280 INFO L226 Difference]: Without dead ends: 22243 [2024-12-02 06:21:47,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=431, Invalid=1731, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 06:21:47,305 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 1743 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:47,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 2479 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:21:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22243 states. [2024-12-02 06:21:50,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22243 to 21992. [2024-12-02 06:21:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21992 states, 16185 states have (on average 1.3016991041087427) internal successors, (21068), 16349 states have internal predecessors, (21068), 3752 states have call successors, (3752), 2054 states have call predecessors, (3752), 2054 states have return successors, (3752), 3588 states have call predecessors, (3752), 3752 states have call successors, (3752) [2024-12-02 06:21:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21992 states to 21992 states and 28572 transitions. [2024-12-02 06:21:50,303 INFO L78 Accepts]: Start accepts. Automaton has 21992 states and 28572 transitions. Word has length 171 [2024-12-02 06:21:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:50,304 INFO L471 AbstractCegarLoop]: Abstraction has 21992 states and 28572 transitions. [2024-12-02 06:21:50,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.333333333333334) internal successors, (240), 18 states have internal predecessors, (240), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2024-12-02 06:21:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand 21992 states and 28572 transitions. [2024-12-02 06:21:50,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 06:21:50,309 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:50,309 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:50,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:21:50,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 06:21:50,509 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:50,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1626071912, now seen corresponding path program 1 times [2024-12-02 06:21:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855655396] [2024-12-02 06:21:50,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:50,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 06:21:51,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:51,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855655396] [2024-12-02 06:21:51,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855655396] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:51,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202298546] [2024-12-02 06:21:51,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:51,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:51,162 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:51,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:21:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:51,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 06:21:51,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 06:21:51,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 06:21:51,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202298546] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:51,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:51,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-12-02 06:21:51,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292550852] [2024-12-02 06:21:51,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:51,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:21:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:51,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:21:51,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:21:51,561 INFO L87 Difference]: Start difference. First operand 21992 states and 28572 transitions. Second operand has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-12-02 06:21:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:56,246 INFO L93 Difference]: Finished difference Result 44178 states and 57352 transitions. [2024-12-02 06:21:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 06:21:56,247 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 171 [2024-12-02 06:21:56,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:56,299 INFO L225 Difference]: With dead ends: 44178 [2024-12-02 06:21:56,299 INFO L226 Difference]: Without dead ends: 22401 [2024-12-02 06:21:56,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=1311, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 06:21:56,326 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1270 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:56,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 2962 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 06:21:56,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22401 states. [2024-12-02 06:21:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22401 to 21997. [2024-12-02 06:21:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21997 states, 16190 states have (on average 1.3013588634959852) internal successors, (21069), 16354 states have internal predecessors, (21069), 3752 states have call successors, (3752), 2054 states have call predecessors, (3752), 2054 states have return successors, (3752), 3588 states have call predecessors, (3752), 3752 states have call successors, (3752) [2024-12-02 06:21:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21997 states to 21997 states and 28573 transitions. [2024-12-02 06:21:59,650 INFO L78 Accepts]: Start accepts. Automaton has 21997 states and 28573 transitions. Word has length 171 [2024-12-02 06:21:59,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:59,650 INFO L471 AbstractCegarLoop]: Abstraction has 21997 states and 28573 transitions. [2024-12-02 06:21:59,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-12-02 06:21:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 21997 states and 28573 transitions. [2024-12-02 06:21:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 06:21:59,656 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:59,656 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:21:59,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:21:59,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 06:21:59,856 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:59,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1925185394, now seen corresponding path program 1 times [2024-12-02 06:21:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327139888] [2024-12-02 06:21:59,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 06:22:00,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:00,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327139888] [2024-12-02 06:22:00,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327139888] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:00,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076876656] [2024-12-02 06:22:00,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:00,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:00,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:00,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:00,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:22:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:00,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 06:22:00,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 06:22:01,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 06:22:01,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076876656] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:22:01,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:22:01,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 20 [2024-12-02 06:22:01,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815173516] [2024-12-02 06:22:01,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:22:01,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:22:01,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:01,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:22:01,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:22:01,273 INFO L87 Difference]: Start difference. First operand 21997 states and 28573 transitions. Second operand has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-12-02 06:22:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:06,850 INFO L93 Difference]: Finished difference Result 45995 states and 59760 transitions. [2024-12-02 06:22:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 06:22:06,850 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) Word has length 179 [2024-12-02 06:22:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:06,914 INFO L225 Difference]: With dead ends: 45995 [2024-12-02 06:22:06,914 INFO L226 Difference]: Without dead ends: 24318 [2024-12-02 06:22:06,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=396, Invalid=1860, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 06:22:06,943 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 1303 mSDsluCounter, 4077 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 4605 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:06,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 4605 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 06:22:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24318 states. [2024-12-02 06:22:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24318 to 21959. [2024-12-02 06:22:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21959 states, 16191 states have (on average 1.300599098264468) internal successors, (21058), 16355 states have internal predecessors, (21058), 3717 states have call successors, (3717), 2050 states have call predecessors, (3717), 2050 states have return successors, (3717), 3553 states have call predecessors, (3717), 3717 states have call successors, (3717) [2024-12-02 06:22:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21959 states to 21959 states and 28492 transitions. [2024-12-02 06:22:10,917 INFO L78 Accepts]: Start accepts. Automaton has 21959 states and 28492 transitions. Word has length 179 [2024-12-02 06:22:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:10,917 INFO L471 AbstractCegarLoop]: Abstraction has 21959 states and 28492 transitions. [2024-12-02 06:22:10,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-12-02 06:22:10,918 INFO L276 IsEmpty]: Start isEmpty. Operand 21959 states and 28492 transitions. [2024-12-02 06:22:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 06:22:10,922 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:10,922 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:22:10,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:22:11,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 06:22:11,123 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:11,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1257909151, now seen corresponding path program 1 times [2024-12-02 06:22:11,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:11,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816793675] [2024-12-02 06:22:11,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:11,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 06:22:11,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816793675] [2024-12-02 06:22:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816793675] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759696604] [2024-12-02 06:22:11,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:11,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:11,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:11,536 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:11,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:22:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:11,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 06:22:11,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 06:22:12,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 06:22:12,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759696604] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:22:12,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:22:12,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 20 [2024-12-02 06:22:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201683686] [2024-12-02 06:22:12,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:22:12,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:22:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:12,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:22:12,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:22:12,518 INFO L87 Difference]: Start difference. First operand 21959 states and 28492 transitions. Second operand has 20 states, 20 states have (on average 12.7) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2024-12-02 06:22:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:17,578 INFO L93 Difference]: Finished difference Result 44957 states and 58392 transitions. [2024-12-02 06:22:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 06:22:17,578 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.7) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) Word has length 179 [2024-12-02 06:22:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:17,640 INFO L225 Difference]: With dead ends: 44957 [2024-12-02 06:22:17,640 INFO L226 Difference]: Without dead ends: 23318 [2024-12-02 06:22:17,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1334, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 06:22:17,668 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 1640 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:17,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 2835 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 06:22:17,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23318 states. [2024-12-02 06:22:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23318 to 23219. [2024-12-02 06:22:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23219 states, 17096 states have (on average 1.2994267664950865) internal successors, (22215), 17270 states have internal predecessors, (22215), 3950 states have call successors, (3950), 2172 states have call predecessors, (3950), 2172 states have return successors, (3950), 3776 states have call predecessors, (3950), 3950 states have call successors, (3950) [2024-12-02 06:22:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23219 states to 23219 states and 30115 transitions. [2024-12-02 06:22:21,734 INFO L78 Accepts]: Start accepts. Automaton has 23219 states and 30115 transitions. Word has length 179 [2024-12-02 06:22:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:21,734 INFO L471 AbstractCegarLoop]: Abstraction has 23219 states and 30115 transitions. [2024-12-02 06:22:21,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.7) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2024-12-02 06:22:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 23219 states and 30115 transitions. [2024-12-02 06:22:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 06:22:21,739 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:21,739 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:22:21,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 06:22:21,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 06:22:21,940 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:21,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1691638237, now seen corresponding path program 1 times [2024-12-02 06:22:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238650809] [2024-12-02 06:22:21,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 06:22:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:22,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238650809] [2024-12-02 06:22:22,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238650809] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:22,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727139733] [2024-12-02 06:22:22,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:22,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:22,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:22,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:22,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:22:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:22,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 06:22:22,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 06:22:23,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-12-02 06:22:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727139733] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:22:23,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:22:23,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 22 [2024-12-02 06:22:23,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017163463] [2024-12-02 06:22:23,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:22:23,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 06:22:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:23,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 06:22:23,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:22:23,405 INFO L87 Difference]: Start difference. First operand 23219 states and 30115 transitions. Second operand has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 17 states have internal predecessors, (179), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) [2024-12-02 06:22:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:31,999 INFO L93 Difference]: Finished difference Result 62138 states and 82432 transitions. [2024-12-02 06:22:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:22:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 17 states have internal predecessors, (179), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) Word has length 179 [2024-12-02 06:22:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:32,100 INFO L225 Difference]: With dead ends: 62138 [2024-12-02 06:22:32,100 INFO L226 Difference]: Without dead ends: 38962 [2024-12-02 06:22:32,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=223, Invalid=1183, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 06:22:32,134 INFO L435 NwaCegarLoop]: 359 mSDtfsCounter, 566 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:32,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 3854 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:22:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38962 states. [2024-12-02 06:22:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38962 to 28653. [2024-12-02 06:22:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28653 states, 20991 states have (on average 1.2930303463389072) internal successors, (27142), 21222 states have internal predecessors, (27142), 4938 states have call successors, (4938), 2723 states have call predecessors, (4938), 2723 states have return successors, (4938), 4707 states have call predecessors, (4938), 4938 states have call successors, (4938) [2024-12-02 06:22:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28653 states to 28653 states and 37018 transitions. [2024-12-02 06:22:37,634 INFO L78 Accepts]: Start accepts. Automaton has 28653 states and 37018 transitions. Word has length 179 [2024-12-02 06:22:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:37,634 INFO L471 AbstractCegarLoop]: Abstraction has 28653 states and 37018 transitions. [2024-12-02 06:22:37,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 17 states have internal predecessors, (179), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) [2024-12-02 06:22:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 28653 states and 37018 transitions. [2024-12-02 06:22:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 06:22:37,639 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:37,639 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-12-02 06:22:37,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:22:37,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 06:22:37,840 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:37,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash 965911304, now seen corresponding path program 1 times [2024-12-02 06:22:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:37,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838948565] [2024-12-02 06:22:37,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 16 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 06:22:38,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:38,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838948565] [2024-12-02 06:22:38,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838948565] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:38,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431246034] [2024-12-02 06:22:38,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:38,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:38,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:38,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:38,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:22:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:38,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 06:22:38,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 06:22:38,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-12-02 06:22:39,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431246034] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:22:39,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:22:39,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 7] total 22 [2024-12-02 06:22:39,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528998126] [2024-12-02 06:22:39,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:22:39,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 06:22:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:39,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 06:22:39,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:22:39,157 INFO L87 Difference]: Start difference. First operand 28653 states and 37018 transitions. Second operand has 22 states, 22 states have (on average 12.045454545454545) internal successors, (265), 19 states have internal predecessors, (265), 7 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (46), 10 states have call predecessors, (46), 7 states have call successors, (46) [2024-12-02 06:22:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:45,807 INFO L93 Difference]: Finished difference Result 50561 states and 64542 transitions. [2024-12-02 06:22:45,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 06:22:45,807 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.045454545454545) internal successors, (265), 19 states have internal predecessors, (265), 7 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (46), 10 states have call predecessors, (46), 7 states have call successors, (46) Word has length 186 [2024-12-02 06:22:45,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:45,871 INFO L225 Difference]: With dead ends: 50561 [2024-12-02 06:22:45,871 INFO L226 Difference]: Without dead ends: 21676 [2024-12-02 06:22:45,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=455, Invalid=1801, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 06:22:45,908 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 3067 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:45,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3067 Valid, 5243 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 06:22:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21676 states. [2024-12-02 06:22:49,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21676 to 15798. [2024-12-02 06:22:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15798 states, 11778 states have (on average 1.2771268466632706) internal successors, (15042), 11901 states have internal predecessors, (15042), 2530 states have call successors, (2530), 1489 states have call predecessors, (2530), 1489 states have return successors, (2530), 2407 states have call predecessors, (2530), 2530 states have call successors, (2530) [2024-12-02 06:22:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15798 states to 15798 states and 20102 transitions. [2024-12-02 06:22:49,425 INFO L78 Accepts]: Start accepts. Automaton has 15798 states and 20102 transitions. Word has length 186 [2024-12-02 06:22:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:49,425 INFO L471 AbstractCegarLoop]: Abstraction has 15798 states and 20102 transitions. [2024-12-02 06:22:49,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.045454545454545) internal successors, (265), 19 states have internal predecessors, (265), 7 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (46), 10 states have call predecessors, (46), 7 states have call successors, (46) [2024-12-02 06:22:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 15798 states and 20102 transitions. [2024-12-02 06:22:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 06:22:49,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:49,429 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-12-02 06:22:49,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 06:22:49,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 06:22:49,629 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:49,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:49,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1555868796, now seen corresponding path program 1 times [2024-12-02 06:22:49,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:49,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947061731] [2024-12-02 06:22:49,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:49,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 06:22:49,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:49,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947061731] [2024-12-02 06:22:49,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947061731] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:49,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137753598] [2024-12-02 06:22:49,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:49,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:49,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:49,993 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:49,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 06:22:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:50,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 06:22:50,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 06:22:50,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 06:22:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137753598] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:22:51,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:22:51,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 10] total 20 [2024-12-02 06:22:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140951186] [2024-12-02 06:22:51,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:22:51,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:22:51,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:51,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:22:51,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:22:51,356 INFO L87 Difference]: Start difference. First operand 15798 states and 20102 transitions. Second operand has 20 states, 20 states have (on average 15.05) internal successors, (301), 20 states have internal predecessors, (301), 11 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (46), 11 states have call predecessors, (46), 11 states have call successors, (46) [2024-12-02 06:22:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:55,952 INFO L93 Difference]: Finished difference Result 31427 states and 40064 transitions. [2024-12-02 06:22:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 06:22:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 15.05) internal successors, (301), 20 states have internal predecessors, (301), 11 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (46), 11 states have call predecessors, (46), 11 states have call successors, (46) Word has length 187 [2024-12-02 06:22:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:55,997 INFO L225 Difference]: With dead ends: 31427 [2024-12-02 06:22:55,997 INFO L226 Difference]: Without dead ends: 15919 [2024-12-02 06:22:56,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1179, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 06:22:56,014 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 1412 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:56,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 2383 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 06:22:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15919 states. [2024-12-02 06:22:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15919 to 15621. [2024-12-02 06:22:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15621 states, 11623 states have (on average 1.2722188763658264) internal successors, (14787), 11746 states have internal predecessors, (14787), 2519 states have call successors, (2519), 1478 states have call predecessors, (2519), 1478 states have return successors, (2519), 2396 states have call predecessors, (2519), 2519 states have call successors, (2519) [2024-12-02 06:22:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15621 states to 15621 states and 19825 transitions. [2024-12-02 06:22:59,166 INFO L78 Accepts]: Start accepts. Automaton has 15621 states and 19825 transitions. Word has length 187 [2024-12-02 06:22:59,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:59,166 INFO L471 AbstractCegarLoop]: Abstraction has 15621 states and 19825 transitions. [2024-12-02 06:22:59,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 15.05) internal successors, (301), 20 states have internal predecessors, (301), 11 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (46), 11 states have call predecessors, (46), 11 states have call successors, (46) [2024-12-02 06:22:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 15621 states and 19825 transitions. [2024-12-02 06:22:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 06:22:59,169 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:59,170 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:22:59,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 06:22:59,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 06:22:59,370 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:59,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash 601223610, now seen corresponding path program 1 times [2024-12-02 06:22:59,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:59,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243879298] [2024-12-02 06:22:59,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:59,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 06:22:59,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243879298] [2024-12-02 06:22:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243879298] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605717117] [2024-12-02 06:22:59,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:59,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:59,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:59,894 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:59,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 06:23:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:00,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:23:00,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:23:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 38 proven. 82 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 06:23:00,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:23:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 06:23:00,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605717117] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:23:00,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:23:00,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 24 [2024-12-02 06:23:00,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447143050] [2024-12-02 06:23:00,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:23:00,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 06:23:00,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:00,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 06:23:00,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:23:00,647 INFO L87 Difference]: Start difference. First operand 15621 states and 19825 transitions. Second operand has 24 states, 24 states have (on average 12.041666666666666) internal successors, (289), 21 states have internal predecessors, (289), 9 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) [2024-12-02 06:23:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:23:05,251 INFO L93 Difference]: Finished difference Result 30892 states and 38986 transitions. [2024-12-02 06:23:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 06:23:05,252 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.041666666666666) internal successors, (289), 21 states have internal predecessors, (289), 9 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) Word has length 196 [2024-12-02 06:23:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:23:05,301 INFO L225 Difference]: With dead ends: 30892 [2024-12-02 06:23:05,301 INFO L226 Difference]: Without dead ends: 15401 [2024-12-02 06:23:05,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=378, Invalid=1602, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 06:23:05,319 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 916 mSDsluCounter, 5781 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 6330 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:23:05,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 6330 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 06:23:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15401 states. [2024-12-02 06:23:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15401 to 14373. [2024-12-02 06:23:08,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14373 states, 10733 states have (on average 1.2585484021242896) internal successors, (13508), 10848 states have internal predecessors, (13508), 2253 states have call successors, (2253), 1386 states have call predecessors, (2253), 1386 states have return successors, (2253), 2138 states have call predecessors, (2253), 2253 states have call successors, (2253) [2024-12-02 06:23:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14373 states to 14373 states and 18014 transitions. [2024-12-02 06:23:08,354 INFO L78 Accepts]: Start accepts. Automaton has 14373 states and 18014 transitions. Word has length 196 [2024-12-02 06:23:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:23:08,355 INFO L471 AbstractCegarLoop]: Abstraction has 14373 states and 18014 transitions. [2024-12-02 06:23:08,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.041666666666666) internal successors, (289), 21 states have internal predecessors, (289), 9 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) [2024-12-02 06:23:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 14373 states and 18014 transitions. [2024-12-02 06:23:08,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 06:23:08,358 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:23:08,358 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:23:08,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 06:23:08,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-12-02 06:23:08,559 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:23:08,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:23:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash -175801837, now seen corresponding path program 1 times [2024-12-02 06:23:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:23:08,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864001908] [2024-12-02 06:23:08,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:23:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-12-02 06:23:08,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:23:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864001908] [2024-12-02 06:23:08,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864001908] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:23:08,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:23:08,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:23:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255666730] [2024-12-02 06:23:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:23:08,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:23:08,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:08,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:23:08,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:23:08,993 INFO L87 Difference]: Start difference. First operand 14373 states and 18014 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 06:23:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:23:12,498 INFO L93 Difference]: Finished difference Result 28681 states and 35949 transitions. [2024-12-02 06:23:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:23:12,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 196 [2024-12-02 06:23:12,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:23:12,545 INFO L225 Difference]: With dead ends: 28681 [2024-12-02 06:23:12,545 INFO L226 Difference]: Without dead ends: 14598 [2024-12-02 06:23:12,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:23:12,560 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 398 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:23:12,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1699 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:23:12,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14598 states. [2024-12-02 06:23:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14598 to 14361. [2024-12-02 06:23:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14361 states, 10721 states have (on average 1.2565991978360227) internal successors, (13472), 10836 states have internal predecessors, (13472), 2253 states have call successors, (2253), 1386 states have call predecessors, (2253), 1386 states have return successors, (2253), 2138 states have call predecessors, (2253), 2253 states have call successors, (2253) [2024-12-02 06:23:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14361 states to 14361 states and 17978 transitions. [2024-12-02 06:23:15,634 INFO L78 Accepts]: Start accepts. Automaton has 14361 states and 17978 transitions. Word has length 196 [2024-12-02 06:23:15,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:23:15,634 INFO L471 AbstractCegarLoop]: Abstraction has 14361 states and 17978 transitions. [2024-12-02 06:23:15,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 06:23:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 14361 states and 17978 transitions. [2024-12-02 06:23:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 06:23:15,638 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:23:15,639 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:23:15,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 06:23:15,639 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:23:15,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:23:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1540379003, now seen corresponding path program 1 times [2024-12-02 06:23:15,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:23:15,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629464916] [2024-12-02 06:23:15,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:23:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 06:23:16,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:23:16,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629464916] [2024-12-02 06:23:16,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629464916] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:23:16,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526240275] [2024-12-02 06:23:16,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:16,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:23:16,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:23:16,012 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:23:16,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 06:23:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:16,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 06:23:16,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:23:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 86 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 06:23:16,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:23:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 06:23:17,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526240275] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:23:17,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:23:17,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 29 [2024-12-02 06:23:17,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842197684] [2024-12-02 06:23:17,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:23:17,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 06:23:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:17,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 06:23:17,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2024-12-02 06:23:17,217 INFO L87 Difference]: Start difference. First operand 14361 states and 17978 transitions. Second operand has 29 states, 29 states have (on average 10.862068965517242) internal successors, (315), 29 states have internal predecessors, (315), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (48), 11 states have call predecessors, (48), 11 states have call successors, (48) [2024-12-02 06:23:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:23:23,397 INFO L93 Difference]: Finished difference Result 35431 states and 44473 transitions. [2024-12-02 06:23:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 06:23:23,398 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.862068965517242) internal successors, (315), 29 states have internal predecessors, (315), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (48), 11 states have call predecessors, (48), 11 states have call successors, (48) Word has length 197 [2024-12-02 06:23:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:23:23,459 INFO L225 Difference]: With dead ends: 35431 [2024-12-02 06:23:23,459 INFO L226 Difference]: Without dead ends: 21360 [2024-12-02 06:23:23,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=506, Invalid=2800, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 06:23:23,480 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 1066 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:23:23,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 4244 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 06:23:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21360 states. [2024-12-02 06:23:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21360 to 20886. [2024-12-02 06:23:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20886 states, 15558 states have (on average 1.2566525260316237) internal successors, (19551), 15733 states have internal predecessors, (19551), 3304 states have call successors, (3304), 2023 states have call predecessors, (3304), 2023 states have return successors, (3304), 3129 states have call predecessors, (3304), 3304 states have call successors, (3304) [2024-12-02 06:23:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20886 states to 20886 states and 26159 transitions. [2024-12-02 06:23:28,137 INFO L78 Accepts]: Start accepts. Automaton has 20886 states and 26159 transitions. Word has length 197 [2024-12-02 06:23:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:23:28,137 INFO L471 AbstractCegarLoop]: Abstraction has 20886 states and 26159 transitions. [2024-12-02 06:23:28,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.862068965517242) internal successors, (315), 29 states have internal predecessors, (315), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (48), 11 states have call predecessors, (48), 11 states have call successors, (48) [2024-12-02 06:23:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 20886 states and 26159 transitions. [2024-12-02 06:23:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 06:23:28,140 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:23:28,140 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:23:28,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 06:23:28,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:23:28,341 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:23:28,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:23:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1198755811, now seen corresponding path program 1 times [2024-12-02 06:23:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:23:28,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654411288] [2024-12-02 06:23:28,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:23:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-12-02 06:23:28,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:23:28,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654411288] [2024-12-02 06:23:28,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654411288] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:23:28,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:23:28,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:23:28,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571924927] [2024-12-02 06:23:28,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:23:28,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:23:28,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:28,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:23:28,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:23:28,478 INFO L87 Difference]: Start difference. First operand 20886 states and 26159 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 06:23:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:23:35,422 INFO L93 Difference]: Finished difference Result 51238 states and 63974 transitions. [2024-12-02 06:23:35,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:23:35,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 198 [2024-12-02 06:23:35,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:23:35,513 INFO L225 Difference]: With dead ends: 51238 [2024-12-02 06:23:35,513 INFO L226 Difference]: Without dead ends: 30642 [2024-12-02 06:23:35,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:23:35,543 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 194 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:23:35,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 2110 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:23:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30642 states. [2024-12-02 06:23:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30642 to 26907. [2024-12-02 06:23:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26907 states, 19949 states have (on average 1.2503884906511604) internal successors, (24944), 20174 states have internal predecessors, (24944), 4294 states have call successors, (4294), 2663 states have call predecessors, (4294), 2663 states have return successors, (4294), 4069 states have call predecessors, (4294), 4294 states have call successors, (4294) [2024-12-02 06:23:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26907 states to 26907 states and 33532 transitions. [2024-12-02 06:23:42,038 INFO L78 Accepts]: Start accepts. Automaton has 26907 states and 33532 transitions. Word has length 198 [2024-12-02 06:23:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:23:42,038 INFO L471 AbstractCegarLoop]: Abstraction has 26907 states and 33532 transitions. [2024-12-02 06:23:42,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 06:23:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 26907 states and 33532 transitions. [2024-12-02 06:23:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 06:23:42,041 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:23:42,041 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:23:42,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 06:23:42,041 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:23:42,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:23:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 150359396, now seen corresponding path program 1 times [2024-12-02 06:23:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:23:42,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106079293] [2024-12-02 06:23:42,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:23:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-12-02 06:23:42,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:23:42,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106079293] [2024-12-02 06:23:42,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106079293] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:23:42,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:23:42,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:23:42,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052847851] [2024-12-02 06:23:42,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:23:42,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:23:42,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:42,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:23:42,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:23:42,144 INFO L87 Difference]: Start difference. First operand 26907 states and 33532 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 06:23:49,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:23:49,009 INFO L93 Difference]: Finished difference Result 56426 states and 70517 transitions. [2024-12-02 06:23:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:23:49,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 198 [2024-12-02 06:23:49,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:23:49,101 INFO L225 Difference]: With dead ends: 56426 [2024-12-02 06:23:49,101 INFO L226 Difference]: Without dead ends: 29809 [2024-12-02 06:23:49,136 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 [2024-12-02 06:23:49,136 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 201 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:23:49,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1132 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:23:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29809 states. [2024-12-02 06:23:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29809 to 27204. [2024-12-02 06:23:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27204 states, 20154 states have (on average 1.2491813039595117) internal successors, (25176), 20383 states have internal predecessors, (25176), 4348 states have call successors, (4348), 2701 states have call predecessors, (4348), 2701 states have return successors, (4348), 4119 states have call predecessors, (4348), 4348 states have call successors, (4348) [2024-12-02 06:23:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27204 states to 27204 states and 33872 transitions. [2024-12-02 06:23:55,766 INFO L78 Accepts]: Start accepts. Automaton has 27204 states and 33872 transitions. Word has length 198 [2024-12-02 06:23:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:23:55,767 INFO L471 AbstractCegarLoop]: Abstraction has 27204 states and 33872 transitions. [2024-12-02 06:23:55,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 06:23:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 27204 states and 33872 transitions. [2024-12-02 06:23:55,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 06:23:55,770 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:23:55,770 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:23:55,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-12-02 06:23:55,770 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:23:55,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:23:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash -655780728, now seen corresponding path program 1 times [2024-12-02 06:23:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:23:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099850277] [2024-12-02 06:23:55,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:55,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:23:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 06:23:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:23:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099850277] [2024-12-02 06:23:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099850277] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:23:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762979198] [2024-12-02 06:23:56,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:56,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:23:56,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:23:56,205 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:23:56,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 06:23:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:56,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 06:23:56,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:23:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 86 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 06:23:56,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:23:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 06:23:57,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762979198] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:23:57,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:23:57,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 17 [2024-12-02 06:23:57,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025985645] [2024-12-02 06:23:57,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:23:57,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 06:23:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:57,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 06:23:57,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:23:57,288 INFO L87 Difference]: Start difference. First operand 27204 states and 33872 transitions. Second operand has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 17 states have internal predecessors, (304), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2024-12-02 06:24:04,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:24:04,777 INFO L93 Difference]: Finished difference Result 51517 states and 64119 transitions. [2024-12-02 06:24:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 06:24:04,778 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 17 states have internal predecessors, (304), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) Word has length 199 [2024-12-02 06:24:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:24:04,862 INFO L225 Difference]: With dead ends: 51517 [2024-12-02 06:24:04,862 INFO L226 Difference]: Without dead ends: 24592 [2024-12-02 06:24:04,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=348, Invalid=984, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 06:24:04,895 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 1762 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:24:04,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 1684 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 06:24:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24592 states. [2024-12-02 06:24:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24592 to 24384. [2024-12-02 06:24:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24384 states, 18130 states have (on average 1.2455046883618313) internal successors, (22581), 18331 states have internal predecessors, (22581), 3834 states have call successors, (3834), 2419 states have call predecessors, (3834), 2419 states have return successors, (3834), 3633 states have call predecessors, (3834), 3834 states have call successors, (3834) [2024-12-02 06:24:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24384 states to 24384 states and 30249 transitions. [2024-12-02 06:24:11,144 INFO L78 Accepts]: Start accepts. Automaton has 24384 states and 30249 transitions. Word has length 199 [2024-12-02 06:24:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:24:11,144 INFO L471 AbstractCegarLoop]: Abstraction has 24384 states and 30249 transitions. [2024-12-02 06:24:11,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 17 states have internal predecessors, (304), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2024-12-02 06:24:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 24384 states and 30249 transitions. [2024-12-02 06:24:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 06:24:11,147 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:24:11,147 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:24:11,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 06:24:11,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:24:11,347 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:24:11,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:24:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1944481588, now seen corresponding path program 1 times [2024-12-02 06:24:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:24:11,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636738461] [2024-12-02 06:24:11,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:24:11,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:24:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:24:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 06:24:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:24:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636738461] [2024-12-02 06:24:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636738461] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:24:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359055048] [2024-12-02 06:24:11,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:24:11,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:24:11,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:24:11,508 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:24:11,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 06:24:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:24:11,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 06:24:11,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:24:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 8 proven. 116 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 06:24:11,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:24:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 06:24:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359055048] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:24:12,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:24:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-12-02 06:24:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893519908] [2024-12-02 06:24:12,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:24:12,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:24:12,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:24:12,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:24:12,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:24:12,091 INFO L87 Difference]: Start difference. First operand 24384 states and 30249 transitions. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2024-12-02 06:24:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:24:19,510 INFO L93 Difference]: Finished difference Result 53338 states and 65729 transitions. [2024-12-02 06:24:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:24:19,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 202 [2024-12-02 06:24:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:24:19,606 INFO L225 Difference]: With dead ends: 53338 [2024-12-02 06:24:19,607 INFO L226 Difference]: Without dead ends: 29244 [2024-12-02 06:24:19,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 400 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:24:19,638 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 294 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:24:19,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1881 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:24:19,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29244 states. [2024-12-02 06:24:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29244 to 26396. [2024-12-02 06:24:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26396 states, 19666 states have (on average 1.2336011390216617) internal successors, (24260), 19876 states have internal predecessors, (24260), 4085 states have call successors, (4085), 2644 states have call predecessors, (4085), 2644 states have return successors, (4085), 3875 states have call predecessors, (4085), 4085 states have call successors, (4085) [2024-12-02 06:24:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26396 states to 26396 states and 32430 transitions. [2024-12-02 06:24:26,535 INFO L78 Accepts]: Start accepts. Automaton has 26396 states and 32430 transitions. Word has length 202 [2024-12-02 06:24:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:24:26,536 INFO L471 AbstractCegarLoop]: Abstraction has 26396 states and 32430 transitions. [2024-12-02 06:24:26,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2024-12-02 06:24:26,536 INFO L276 IsEmpty]: Start isEmpty. Operand 26396 states and 32430 transitions. [2024-12-02 06:24:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 06:24:26,538 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:24:26,539 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:24:26,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 06:24:26,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 06:24:26,739 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:24:26,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:24:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1958157189, now seen corresponding path program 1 times [2024-12-02 06:24:26,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:24:26,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420271885] [2024-12-02 06:24:26,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:24:26,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:24:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:24:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-12-02 06:24:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:24:27,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420271885] [2024-12-02 06:24:27,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420271885] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:24:27,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228643895] [2024-12-02 06:24:27,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:24:27,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:24:27,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:24:27,190 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:24:27,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 06:24:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:24:27,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:24:27,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:24:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 33 proven. 85 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 06:24:27,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:24:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 06:24:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228643895] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:24:27,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:24:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-12-02 06:24:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709620763] [2024-12-02 06:24:27,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:24:27,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 06:24:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:24:27,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 06:24:27,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:24:27,938 INFO L87 Difference]: Start difference. First operand 26396 states and 32430 transitions. Second operand has 24 states, 24 states have (on average 13.458333333333334) internal successors, (323), 22 states have internal predecessors, (323), 9 states have call successors, (56), 4 states have call predecessors, (56), 7 states have return successors, (55), 11 states have call predecessors, (55), 9 states have call successors, (55) [2024-12-02 06:24:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:24:41,284 INFO L93 Difference]: Finished difference Result 61209 states and 75269 transitions. [2024-12-02 06:24:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-12-02 06:24:41,285 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.458333333333334) internal successors, (323), 22 states have internal predecessors, (323), 9 states have call successors, (56), 4 states have call predecessors, (56), 7 states have return successors, (55), 11 states have call predecessors, (55), 9 states have call successors, (55) Word has length 203 [2024-12-02 06:24:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:24:41,400 INFO L225 Difference]: With dead ends: 61209 [2024-12-02 06:24:41,400 INFO L226 Difference]: Without dead ends: 36303 [2024-12-02 06:24:41,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1146, Invalid=6864, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 06:24:41,437 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 2080 mSDsluCounter, 6391 mSDsCounter, 0 mSdLazyCounter, 3590 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 6940 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 3590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:24:41,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 6940 Invalid, 4289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 3590 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 06:24:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36303 states. [2024-12-02 06:24:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36303 to 29747. [2024-12-02 06:24:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29747 states, 22204 states have (on average 1.2276616825797153) internal successors, (27259), 22458 states have internal predecessors, (27259), 4548 states have call successors, (4548), 2994 states have call predecessors, (4548), 2994 states have return successors, (4548), 4294 states have call predecessors, (4548), 4548 states have call successors, (4548) [2024-12-02 06:24:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29747 states to 29747 states and 36355 transitions. [2024-12-02 06:24:49,683 INFO L78 Accepts]: Start accepts. Automaton has 29747 states and 36355 transitions. Word has length 203 [2024-12-02 06:24:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:24:49,683 INFO L471 AbstractCegarLoop]: Abstraction has 29747 states and 36355 transitions. [2024-12-02 06:24:49,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.458333333333334) internal successors, (323), 22 states have internal predecessors, (323), 9 states have call successors, (56), 4 states have call predecessors, (56), 7 states have return successors, (55), 11 states have call predecessors, (55), 9 states have call successors, (55) [2024-12-02 06:24:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 29747 states and 36355 transitions. [2024-12-02 06:24:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 06:24:49,686 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:24:49,686 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 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, 1] [2024-12-02 06:24:49,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 06:24:49,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 06:24:49,886 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:24:49,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:24:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash -171682072, now seen corresponding path program 1 times [2024-12-02 06:24:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:24:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272114412] [2024-12-02 06:24:49,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:24:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:24:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:24:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-12-02 06:24:50,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:24:50,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272114412] [2024-12-02 06:24:50,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272114412] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:24:50,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471249511] [2024-12-02 06:24:50,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:24:50,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:24:50,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:24:50,391 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:24:50,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 06:24:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:24:50,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 06:24:50,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:24:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 123 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-12-02 06:24:50,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:24:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-12-02 06:24:51,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471249511] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:24:51,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:24:51,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 10] total 21 [2024-12-02 06:24:51,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866525522] [2024-12-02 06:24:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:24:51,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:24:51,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:24:51,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:24:51,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:24:51,008 INFO L87 Difference]: Start difference. First operand 29747 states and 36355 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 06:24:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:24:58,942 INFO L93 Difference]: Finished difference Result 57232 states and 70172 transitions. [2024-12-02 06:24:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:24:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 208 [2024-12-02 06:24:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:24:59,043 INFO L225 Difference]: With dead ends: 57232 [2024-12-02 06:24:59,043 INFO L226 Difference]: Without dead ends: 29682 [2024-12-02 06:24:59,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-12-02 06:24:59,079 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 462 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:24:59,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1421 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:24:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29682 states. [2024-12-02 06:25:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29682 to 29314. [2024-12-02 06:25:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29314 states, 21889 states have (on average 1.2255927634885102) internal successors, (26827), 22134 states have internal predecessors, (26827), 4479 states have call successors, (4479), 2945 states have call predecessors, (4479), 2945 states have return successors, (4479), 4234 states have call predecessors, (4479), 4479 states have call successors, (4479) [2024-12-02 06:25:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29314 states to 29314 states and 35785 transitions. [2024-12-02 06:25:06,915 INFO L78 Accepts]: Start accepts. Automaton has 29314 states and 35785 transitions. Word has length 208 [2024-12-02 06:25:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:25:06,915 INFO L471 AbstractCegarLoop]: Abstraction has 29314 states and 35785 transitions. [2024-12-02 06:25:06,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 06:25:06,915 INFO L276 IsEmpty]: Start isEmpty. Operand 29314 states and 35785 transitions. [2024-12-02 06:25:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 06:25:06,918 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:25:06,918 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:25:06,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 06:25:07,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 06:25:07,118 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:25:07,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:25:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1279424162, now seen corresponding path program 1 times [2024-12-02 06:25:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:25:07,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796334236] [2024-12-02 06:25:07,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:25:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:25:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:25:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-12-02 06:25:07,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:25:07,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796334236] [2024-12-02 06:25:07,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796334236] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:25:07,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187746708] [2024-12-02 06:25:07,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:25:07,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:25:07,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:25:07,640 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:25:07,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 06:25:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:25:07,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 06:25:07,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:25:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 133 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 06:25:08,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:25:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-12-02 06:25:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187746708] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:25:08,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:25:08,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 9] total 20 [2024-12-02 06:25:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230805908] [2024-12-02 06:25:08,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:25:08,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:25:08,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:25:08,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:25:08,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:25:08,432 INFO L87 Difference]: Start difference. First operand 29314 states and 35785 transitions. Second operand has 20 states, 20 states have (on average 13.5) internal successors, (270), 18 states have internal predecessors, (270), 7 states have call successors, (60), 6 states have call predecessors, (60), 7 states have return successors, (59), 9 states have call predecessors, (59), 7 states have call successors, (59) [2024-12-02 06:25:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:25:21,783 INFO L93 Difference]: Finished difference Result 70139 states and 85875 transitions. [2024-12-02 06:25:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-12-02 06:25:21,784 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 18 states have internal predecessors, (270), 7 states have call successors, (60), 6 states have call predecessors, (60), 7 states have return successors, (59), 9 states have call predecessors, (59), 7 states have call successors, (59) Word has length 208 [2024-12-02 06:25:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:25:21,909 INFO L225 Difference]: With dead ends: 70139 [2024-12-02 06:25:21,909 INFO L226 Difference]: Without dead ends: 41432 [2024-12-02 06:25:21,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=504, Invalid=2688, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 06:25:21,947 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 1368 mSDsluCounter, 4972 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 5427 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:25:21,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 5427 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 06:25:21,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41432 states. [2024-12-02 06:25:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41432 to 33137. [2024-12-02 06:25:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33137 states, 24629 states have (on average 1.2257501319582607) internal successors, (30189), 24917 states have internal predecessors, (30189), 5148 states have call successors, (5148), 3359 states have call predecessors, (5148), 3359 states have return successors, (5148), 4860 states have call predecessors, (5148), 5148 states have call successors, (5148) [2024-12-02 06:25:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33137 states to 33137 states and 40485 transitions. [2024-12-02 06:25:32,186 INFO L78 Accepts]: Start accepts. Automaton has 33137 states and 40485 transitions. Word has length 208 [2024-12-02 06:25:32,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:25:32,186 INFO L471 AbstractCegarLoop]: Abstraction has 33137 states and 40485 transitions. [2024-12-02 06:25:32,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 18 states have internal predecessors, (270), 7 states have call successors, (60), 6 states have call predecessors, (60), 7 states have return successors, (59), 9 states have call predecessors, (59), 7 states have call successors, (59) [2024-12-02 06:25:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 33137 states and 40485 transitions. [2024-12-02 06:25:32,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-12-02 06:25:32,191 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:25:32,192 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2024-12-02 06:25:32,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 06:25:32,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 06:25:32,392 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:25:32,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:25:32,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2114137822, now seen corresponding path program 1 times [2024-12-02 06:25:32,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:25:32,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961816593] [2024-12-02 06:25:32,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:25:32,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:25:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:25:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 06:25:33,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:25:33,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961816593] [2024-12-02 06:25:33,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961816593] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:25:33,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343078881] [2024-12-02 06:25:33,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:25:33,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:25:33,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:25:33,285 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:25:33,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 06:25:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:25:33,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 06:25:33,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:25:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 4 proven. 127 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 06:25:34,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:25:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 06:25:34,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343078881] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:25:34,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:25:34,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 24 [2024-12-02 06:25:34,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356121161] [2024-12-02 06:25:34,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:25:34,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 06:25:34,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:25:34,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 06:25:34,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:25:34,501 INFO L87 Difference]: Start difference. First operand 33137 states and 40485 transitions. Second operand has 24 states, 24 states have (on average 12.75) internal successors, (306), 22 states have internal predecessors, (306), 8 states have call successors, (60), 6 states have call predecessors, (60), 8 states have return successors, (59), 10 states have call predecessors, (59), 8 states have call successors, (59) [2024-12-02 06:25:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:25:58,201 INFO L93 Difference]: Finished difference Result 96853 states and 118509 transitions. [2024-12-02 06:25:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-12-02 06:25:58,202 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.75) internal successors, (306), 22 states have internal predecessors, (306), 8 states have call successors, (60), 6 states have call predecessors, (60), 8 states have return successors, (59), 10 states have call predecessors, (59), 8 states have call successors, (59) Word has length 218 [2024-12-02 06:25:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:25:58,387 INFO L225 Difference]: With dead ends: 96853 [2024-12-02 06:25:58,387 INFO L226 Difference]: Without dead ends: 65822 [2024-12-02 06:25:58,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1515 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=718, Invalid=5288, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 06:25:58,440 INFO L435 NwaCegarLoop]: 794 mSDtfsCounter, 1982 mSDsluCounter, 11212 mSDsCounter, 0 mSdLazyCounter, 4233 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 12006 SdHoareTripleChecker+Invalid, 4856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 4233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:25:58,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 12006 Invalid, 4856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 4233 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 06:25:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65822 states. [2024-12-02 06:26:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65822 to 41865. [2024-12-02 06:26:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41865 states, 31132 states have (on average 1.2310163176153155) internal successors, (38324), 31510 states have internal predecessors, (38324), 6502 states have call successors, (6502), 4230 states have call predecessors, (6502), 4230 states have return successors, (6502), 6124 states have call predecessors, (6502), 6502 states have call successors, (6502) [2024-12-02 06:26:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41865 states to 41865 states and 51328 transitions. [2024-12-02 06:26:11,365 INFO L78 Accepts]: Start accepts. Automaton has 41865 states and 51328 transitions. Word has length 218 [2024-12-02 06:26:11,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:26:11,366 INFO L471 AbstractCegarLoop]: Abstraction has 41865 states and 51328 transitions. [2024-12-02 06:26:11,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.75) internal successors, (306), 22 states have internal predecessors, (306), 8 states have call successors, (60), 6 states have call predecessors, (60), 8 states have return successors, (59), 10 states have call predecessors, (59), 8 states have call successors, (59) [2024-12-02 06:26:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 41865 states and 51328 transitions. [2024-12-02 06:26:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-12-02 06:26:11,372 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:26:11,372 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2024-12-02 06:26:11,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 06:26:11,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-12-02 06:26:11,572 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:26:11,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:26:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1292735544, now seen corresponding path program 1 times [2024-12-02 06:26:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:26:11,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335498999] [2024-12-02 06:26:11,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:11,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:26:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 06:26:11,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:26:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335498999] [2024-12-02 06:26:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335498999] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:26:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63979378] [2024-12-02 06:26:11,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:11,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:26:11,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:26:11,941 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:26:11,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 06:26:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:12,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 06:26:12,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:26:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 06:26:12,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:26:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 06:26:12,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63979378] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:26:12,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:26:12,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 23 [2024-12-02 06:26:12,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452087444] [2024-12-02 06:26:12,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:26:12,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 06:26:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:26:12,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 06:26:12,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-12-02 06:26:12,669 INFO L87 Difference]: Start difference. First operand 41865 states and 51328 transitions. Second operand has 23 states, 23 states have (on average 13.304347826086957) internal successors, (306), 22 states have internal predecessors, (306), 8 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (42), 9 states have call predecessors, (42), 8 states have call successors, (42) [2024-12-02 06:26:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:26:25,838 INFO L93 Difference]: Finished difference Result 82120 states and 101028 transitions. [2024-12-02 06:26:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 06:26:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.304347826086957) internal successors, (306), 22 states have internal predecessors, (306), 8 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (42), 9 states have call predecessors, (42), 8 states have call successors, (42) Word has length 225 [2024-12-02 06:26:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:26:25,982 INFO L225 Difference]: With dead ends: 82120 [2024-12-02 06:26:25,983 INFO L226 Difference]: Without dead ends: 42367 [2024-12-02 06:26:26,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=1409, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 06:26:26,035 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 577 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:26:26,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 3644 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 06:26:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42367 states. [2024-12-02 06:26:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42367 to 41896. [2024-12-02 06:26:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41896 states, 31163 states have (on average 1.2298559188781568) internal successors, (38326), 31541 states have internal predecessors, (38326), 6502 states have call successors, (6502), 4230 states have call predecessors, (6502), 4230 states have return successors, (6502), 6124 states have call predecessors, (6502), 6502 states have call successors, (6502) [2024-12-02 06:26:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41896 states to 41896 states and 51330 transitions. [2024-12-02 06:26:38,641 INFO L78 Accepts]: Start accepts. Automaton has 41896 states and 51330 transitions. Word has length 225 [2024-12-02 06:26:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:26:38,642 INFO L471 AbstractCegarLoop]: Abstraction has 41896 states and 51330 transitions. [2024-12-02 06:26:38,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.304347826086957) internal successors, (306), 22 states have internal predecessors, (306), 8 states have call successors, (42), 5 states have call predecessors, (42), 6 states have return successors, (42), 9 states have call predecessors, (42), 8 states have call successors, (42) [2024-12-02 06:26:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 41896 states and 51330 transitions. [2024-12-02 06:26:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-12-02 06:26:38,646 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:26:38,646 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2024-12-02 06:26:38,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 06:26:38,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-12-02 06:26:38,847 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:26:38,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:26:38,847 INFO L85 PathProgramCache]: Analyzing trace with hash -338795386, now seen corresponding path program 1 times [2024-12-02 06:26:38,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:26:38,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577071393] [2024-12-02 06:26:38,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:38,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:26:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 06:26:39,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:26:39,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577071393] [2024-12-02 06:26:39,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577071393] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:26:39,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307789008] [2024-12-02 06:26:39,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:39,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:26:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:26:39,320 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:26:39,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 06:26:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:39,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 06:26:39,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:26:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 81 proven. 54 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 06:26:41,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:26:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 06:26:41,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307789008] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:26:41,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:26:41,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13] total 32 [2024-12-02 06:26:41,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198897653] [2024-12-02 06:26:41,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:26:41,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 06:26:41,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:26:41,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 06:26:41,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:26:41,368 INFO L87 Difference]: Start difference. First operand 41896 states and 51330 transitions. Second operand has 32 states, 32 states have (on average 9.78125) internal successors, (313), 30 states have internal predecessors, (313), 10 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (42), 12 states have call predecessors, (42), 10 states have call successors, (42) [2024-12-02 06:26:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:26:58,538 INFO L93 Difference]: Finished difference Result 85547 states and 105164 transitions. [2024-12-02 06:26:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 06:26:58,539 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.78125) internal successors, (313), 30 states have internal predecessors, (313), 10 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (42), 12 states have call predecessors, (42), 10 states have call successors, (42) Word has length 225 [2024-12-02 06:26:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:26:58,702 INFO L225 Difference]: With dead ends: 85547 [2024-12-02 06:26:58,702 INFO L226 Difference]: Without dead ends: 45903 [2024-12-02 06:26:58,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=540, Invalid=3000, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 06:26:58,754 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 1423 mSDsluCounter, 4547 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 4931 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:26:58,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 4931 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 06:26:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45903 states. [2024-12-02 06:27:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45903 to 42552. [2024-12-02 06:27:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42552 states, 31668 states have (on average 1.2284324870531766) internal successors, (38902), 32053 states have internal predecessors, (38902), 6577 states have call successors, (6577), 4306 states have call predecessors, (6577), 4306 states have return successors, (6577), 6192 states have call predecessors, (6577), 6577 states have call successors, (6577) [2024-12-02 06:27:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42552 states to 42552 states and 52056 transitions. [2024-12-02 06:27:13,240 INFO L78 Accepts]: Start accepts. Automaton has 42552 states and 52056 transitions. Word has length 225 [2024-12-02 06:27:13,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:27:13,240 INFO L471 AbstractCegarLoop]: Abstraction has 42552 states and 52056 transitions. [2024-12-02 06:27:13,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.78125) internal successors, (313), 30 states have internal predecessors, (313), 10 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (42), 12 states have call predecessors, (42), 10 states have call successors, (42) [2024-12-02 06:27:13,241 INFO L276 IsEmpty]: Start isEmpty. Operand 42552 states and 52056 transitions. [2024-12-02 06:27:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 06:27:13,253 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:27:13,253 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:27:13,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 06:27:13,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-12-02 06:27:13,453 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:27:13,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:27:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2111135905, now seen corresponding path program 1 times [2024-12-02 06:27:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:27:13,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190872260] [2024-12-02 06:27:13,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:27:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:27:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:27:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 61 proven. 47 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-12-02 06:27:14,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:27:14,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190872260] [2024-12-02 06:27:14,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190872260] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:27:14,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887059257] [2024-12-02 06:27:14,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:27:14,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:27:14,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:27:14,164 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:27:14,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 06:27:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:27:14,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 06:27:14,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:27:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 139 proven. 152 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 06:27:14,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:27:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 75 proven. 33 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-12-02 06:27:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887059257] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:27:15,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:27:15,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 21 [2024-12-02 06:27:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395120994] [2024-12-02 06:27:15,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:27:15,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 06:27:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:27:15,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 06:27:15,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:27:15,172 INFO L87 Difference]: Start difference. First operand 42552 states and 52056 transitions. Second operand has 21 states, 21 states have (on average 19.476190476190474) internal successors, (409), 21 states have internal predecessors, (409), 11 states have call successors, (71), 6 states have call predecessors, (71), 7 states have return successors, (70), 11 states have call predecessors, (70), 11 states have call successors, (70) [2024-12-02 06:27:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:27:32,243 INFO L93 Difference]: Finished difference Result 83138 states and 102021 transitions. [2024-12-02 06:27:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-12-02 06:27:32,244 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 19.476190476190474) internal successors, (409), 21 states have internal predecessors, (409), 11 states have call successors, (71), 6 states have call predecessors, (71), 7 states have return successors, (70), 11 states have call predecessors, (70), 11 states have call successors, (70) Word has length 271 [2024-12-02 06:27:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:27:32,405 INFO L225 Difference]: With dead ends: 83138 [2024-12-02 06:27:32,405 INFO L226 Difference]: Without dead ends: 43122 [2024-12-02 06:27:32,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1912 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=954, Invalid=5526, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 06:27:32,455 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 988 mSDsluCounter, 5369 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:27:32,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 5977 Invalid, 3135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 06:27:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43122 states. [2024-12-02 06:27:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43122 to 42372. [2024-12-02 06:27:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42372 states, 31516 states have (on average 1.2255679654778526) internal successors, (38625), 31901 states have internal predecessors, (38625), 6563 states have call successors, (6563), 4292 states have call predecessors, (6563), 4292 states have return successors, (6563), 6178 states have call predecessors, (6563), 6563 states have call successors, (6563) [2024-12-02 06:27:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42372 states to 42372 states and 51751 transitions. [2024-12-02 06:27:46,409 INFO L78 Accepts]: Start accepts. Automaton has 42372 states and 51751 transitions. Word has length 271 [2024-12-02 06:27:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:27:46,410 INFO L471 AbstractCegarLoop]: Abstraction has 42372 states and 51751 transitions. [2024-12-02 06:27:46,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.476190476190474) internal successors, (409), 21 states have internal predecessors, (409), 11 states have call successors, (71), 6 states have call predecessors, (71), 7 states have return successors, (70), 11 states have call predecessors, (70), 11 states have call successors, (70) [2024-12-02 06:27:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 42372 states and 51751 transitions. [2024-12-02 06:27:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-12-02 06:27:46,422 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:27:46,422 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:27:46,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 06:27:46,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:27:46,623 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:27:46,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:27:46,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1555212784, now seen corresponding path program 1 times [2024-12-02 06:27:46,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:27:46,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775795837] [2024-12-02 06:27:46,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:27:46,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:27:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:27:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 06:27:47,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:27:47,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775795837] [2024-12-02 06:27:47,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775795837] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:27:47,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516065534] [2024-12-02 06:27:47,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:27:47,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:27:47,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:27:47,132 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:27:47,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 06:27:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:27:47,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 06:27:47,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:27:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 153 proven. 162 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 06:27:48,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:27:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 06:27:48,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516065534] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:27:48,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:27:48,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 11] total 20 [2024-12-02 06:27:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143748574] [2024-12-02 06:27:48,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:27:48,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:27:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:27:48,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:27:48,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:27:48,385 INFO L87 Difference]: Start difference. First operand 42372 states and 51751 transitions. Second operand has 20 states, 20 states have (on average 19.6) internal successors, (392), 20 states have internal predecessors, (392), 12 states have call successors, (65), 6 states have call predecessors, (65), 6 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) [2024-12-02 06:28:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:28:03,252 INFO L93 Difference]: Finished difference Result 83481 states and 102350 transitions. [2024-12-02 06:28:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 06:28:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.6) internal successors, (392), 20 states have internal predecessors, (392), 12 states have call successors, (65), 6 states have call predecessors, (65), 6 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) Word has length 274 [2024-12-02 06:28:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:28:03,400 INFO L225 Difference]: With dead ends: 83481 [2024-12-02 06:28:03,400 INFO L226 Difference]: Without dead ends: 43645 [2024-12-02 06:28:03,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=592, Invalid=1664, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 06:28:03,446 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 2475 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2475 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:28:03,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2475 Valid, 1846 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 06:28:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2024-12-02 06:28:17,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43099. [2024-12-02 06:28:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43099 states, 32145 states have (on average 1.2251049930004667) internal successors, (39381), 32530 states have internal predecessors, (39381), 6612 states have call successors, (6612), 4341 states have call predecessors, (6612), 4341 states have return successors, (6612), 6227 states have call predecessors, (6612), 6612 states have call successors, (6612) [2024-12-02 06:28:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43099 states to 43099 states and 52605 transitions. [2024-12-02 06:28:17,758 INFO L78 Accepts]: Start accepts. Automaton has 43099 states and 52605 transitions. Word has length 274 [2024-12-02 06:28:17,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:28:17,758 INFO L471 AbstractCegarLoop]: Abstraction has 43099 states and 52605 transitions. [2024-12-02 06:28:17,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.6) internal successors, (392), 20 states have internal predecessors, (392), 12 states have call successors, (65), 6 states have call predecessors, (65), 6 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) [2024-12-02 06:28:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 43099 states and 52605 transitions. [2024-12-02 06:28:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-12-02 06:28:17,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:28:17,771 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:28:17,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 06:28:17,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:28:17,972 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:28:17,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:28:17,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1278843042, now seen corresponding path program 1 times [2024-12-02 06:28:17,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:28:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644748536] [2024-12-02 06:28:17,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:28:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 66 proven. 45 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 06:28:18,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:28:18,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644748536] [2024-12-02 06:28:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644748536] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:28:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367967424] [2024-12-02 06:28:18,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:18,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:28:18,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:28:18,584 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:28:18,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 06:28:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:18,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 06:28:18,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:28:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 186 proven. 137 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 06:28:19,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:28:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 58 proven. 53 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 06:28:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367967424] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:28:20,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:28:20,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 14] total 30 [2024-12-02 06:28:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013526157] [2024-12-02 06:28:20,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:28:20,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 06:28:20,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:28:20,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 06:28:20,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:28:20,763 INFO L87 Difference]: Start difference. First operand 43099 states and 52605 transitions. Second operand has 30 states, 30 states have (on average 12.933333333333334) internal successors, (388), 30 states have internal predecessors, (388), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) [2024-12-02 06:28:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:28:37,606 INFO L93 Difference]: Finished difference Result 84346 states and 103317 transitions. [2024-12-02 06:28:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 06:28:37,606 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 12.933333333333334) internal successors, (388), 30 states have internal predecessors, (388), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) Word has length 276 [2024-12-02 06:28:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:28:37,778 INFO L225 Difference]: With dead ends: 84346 [2024-12-02 06:28:37,778 INFO L226 Difference]: Without dead ends: 43783 [2024-12-02 06:28:37,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=623, Invalid=3159, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 06:28:37,830 INFO L435 NwaCegarLoop]: 651 mSDtfsCounter, 1461 mSDsluCounter, 6622 mSDsCounter, 0 mSdLazyCounter, 3663 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 7273 SdHoareTripleChecker+Invalid, 4068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 3663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:28:37,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 7273 Invalid, 4068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 3663 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 06:28:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43783 states. [2024-12-02 06:28:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43783 to 43101. [2024-12-02 06:28:52,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43101 states, 32147 states have (on average 1.2250598811708713) internal successors, (39382), 32532 states have internal predecessors, (39382), 6612 states have call successors, (6612), 4341 states have call predecessors, (6612), 4341 states have return successors, (6612), 6227 states have call predecessors, (6612), 6612 states have call successors, (6612) [2024-12-02 06:28:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43101 states to 43101 states and 52606 transitions. [2024-12-02 06:28:52,520 INFO L78 Accepts]: Start accepts. Automaton has 43101 states and 52606 transitions. Word has length 276 [2024-12-02 06:28:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:28:52,520 INFO L471 AbstractCegarLoop]: Abstraction has 43101 states and 52606 transitions. [2024-12-02 06:28:52,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.933333333333334) internal successors, (388), 30 states have internal predecessors, (388), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) [2024-12-02 06:28:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 43101 states and 52606 transitions. [2024-12-02 06:28:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-12-02 06:28:52,532 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:28:52,532 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:28:52,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 06:28:52,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:28:52,732 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:28:52,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:28:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1368424908, now seen corresponding path program 1 times [2024-12-02 06:28:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:28:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152494743] [2024-12-02 06:28:52,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:52,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:28:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 53 proven. 55 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-12-02 06:28:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:28:53,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152494743] [2024-12-02 06:28:53,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152494743] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:28:53,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096073452] [2024-12-02 06:28:53,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:53,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:28:53,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:28:53,403 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:28:53,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 06:28:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:53,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 06:28:53,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:28:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 152 proven. 147 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 06:28:54,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:28:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 47 proven. 61 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-12-02 06:28:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096073452] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:28:55,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:28:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 29 [2024-12-02 06:28:55,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424082931] [2024-12-02 06:28:55,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:28:55,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 06:28:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:28:55,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 06:28:55,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-12-02 06:28:55,887 INFO L87 Difference]: Start difference. First operand 43101 states and 52606 transitions. Second operand has 29 states, 29 states have (on average 13.586206896551724) internal successors, (394), 29 states have internal predecessors, (394), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) [2024-12-02 06:29:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:29:12,530 INFO L93 Difference]: Finished difference Result 83904 states and 102806 transitions. [2024-12-02 06:29:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 06:29:12,531 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 13.586206896551724) internal successors, (394), 29 states have internal predecessors, (394), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) Word has length 277 [2024-12-02 06:29:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:29:12,699 INFO L225 Difference]: With dead ends: 83904 [2024-12-02 06:29:12,699 INFO L226 Difference]: Without dead ends: 43339 [2024-12-02 06:29:12,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=828, Invalid=3728, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 06:29:12,751 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 1167 mSDsluCounter, 5022 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 5533 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:29:12,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 5533 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 06:29:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43339 states. [2024-12-02 06:29:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43339 to 42513. [2024-12-02 06:29:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42513 states, 31708 states have (on average 1.2253059164879525) internal successors, (38852), 32089 states have internal predecessors, (38852), 6521 states have call successors, (6521), 4283 states have call predecessors, (6521), 4283 states have return successors, (6521), 6140 states have call predecessors, (6521), 6521 states have call successors, (6521) [2024-12-02 06:29:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42513 states to 42513 states and 51894 transitions. [2024-12-02 06:29:26,994 INFO L78 Accepts]: Start accepts. Automaton has 42513 states and 51894 transitions. Word has length 277 [2024-12-02 06:29:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:29:26,994 INFO L471 AbstractCegarLoop]: Abstraction has 42513 states and 51894 transitions. [2024-12-02 06:29:26,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 13.586206896551724) internal successors, (394), 29 states have internal predecessors, (394), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) [2024-12-02 06:29:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 42513 states and 51894 transitions. [2024-12-02 06:29:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-12-02 06:29:27,006 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:29:27,006 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:29:27,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 06:29:27,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-12-02 06:29:27,207 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:29:27,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:29:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1159984850, now seen corresponding path program 1 times [2024-12-02 06:29:27,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:29:27,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123475074] [2024-12-02 06:29:27,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:29:27,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:29:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:29:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 64 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 06:29:27,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:29:27,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123475074] [2024-12-02 06:29:27,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123475074] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:29:27,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453256831] [2024-12-02 06:29:27,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:29:27,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:29:27,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:29:27,799 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:29:27,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 06:29:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:29:28,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 06:29:28,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:29:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 181 proven. 143 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 06:29:29,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:29:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 53 proven. 59 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 06:29:29,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453256831] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:29:29,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:29:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 14] total 30 [2024-12-02 06:29:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050219852] [2024-12-02 06:29:29,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:29:29,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 06:29:29,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:29:29,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 06:29:29,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:29:29,978 INFO L87 Difference]: Start difference. First operand 42513 states and 51894 transitions. Second operand has 30 states, 30 states have (on average 13.066666666666666) internal successors, (392), 30 states have internal predecessors, (392), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) [2024-12-02 06:29:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:29:46,931 INFO L93 Difference]: Finished difference Result 83060 states and 101761 transitions. [2024-12-02 06:29:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 06:29:46,931 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 13.066666666666666) internal successors, (392), 30 states have internal predecessors, (392), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) Word has length 277 [2024-12-02 06:29:46,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:29:47,112 INFO L225 Difference]: With dead ends: 83060 [2024-12-02 06:29:47,112 INFO L226 Difference]: Without dead ends: 43083 [2024-12-02 06:29:47,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=893, Invalid=4807, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 06:29:47,161 INFO L435 NwaCegarLoop]: 633 mSDtfsCounter, 1946 mSDsluCounter, 5841 mSDsCounter, 0 mSdLazyCounter, 3640 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 6474 SdHoareTripleChecker+Invalid, 4225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 3640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:29:47,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 6474 Invalid, 4225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 3640 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 06:29:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43083 states. [2024-12-02 06:30:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43083 to 42526. [2024-12-02 06:30:01,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42526 states, 31721 states have (on average 1.2252451057658964) internal successors, (38866), 32102 states have internal predecessors, (38866), 6521 states have call successors, (6521), 4283 states have call predecessors, (6521), 4283 states have return successors, (6521), 6140 states have call predecessors, (6521), 6521 states have call successors, (6521) [2024-12-02 06:30:01,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42526 states to 42526 states and 51908 transitions. [2024-12-02 06:30:01,240 INFO L78 Accepts]: Start accepts. Automaton has 42526 states and 51908 transitions. Word has length 277 [2024-12-02 06:30:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:01,240 INFO L471 AbstractCegarLoop]: Abstraction has 42526 states and 51908 transitions. [2024-12-02 06:30:01,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.066666666666666) internal successors, (392), 30 states have internal predecessors, (392), 13 states have call successors, (65), 7 states have call predecessors, (65), 8 states have return successors, (64), 13 states have call predecessors, (64), 13 states have call successors, (64) [2024-12-02 06:30:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 42526 states and 51908 transitions. [2024-12-02 06:30:01,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-12-02 06:30:01,252 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:01,252 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:01,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 06:30:01,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-12-02 06:30:01,453 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:01,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash 71752887, now seen corresponding path program 1 times [2024-12-02 06:30:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58102883] [2024-12-02 06:30:01,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:01,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 88 proven. 23 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-12-02 06:30:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58102883] [2024-12-02 06:30:02,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58102883] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734137541] [2024-12-02 06:30:02,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:02,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:02,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:02,360 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:02,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 06:30:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:02,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 06:30:02,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 152 proven. 172 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 06:30:03,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:30:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 79 proven. 37 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-12-02 06:30:04,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734137541] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:30:04,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:30:04,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 12] total 32 [2024-12-02 06:30:04,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456739023] [2024-12-02 06:30:04,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:30:04,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 06:30:04,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:04,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 06:30:04,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:30:04,054 INFO L87 Difference]: Start difference. First operand 42526 states and 51908 transitions. Second operand has 32 states, 32 states have (on average 12.21875) internal successors, (391), 29 states have internal predecessors, (391), 12 states have call successors, (71), 8 states have call predecessors, (71), 12 states have return successors, (70), 15 states have call predecessors, (70), 12 states have call successors, (70) [2024-12-02 06:30:25,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:25,971 INFO L93 Difference]: Finished difference Result 89725 states and 109177 transitions. [2024-12-02 06:30:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-12-02 06:30:25,972 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 12.21875) internal successors, (391), 29 states have internal predecessors, (391), 12 states have call successors, (71), 8 states have call predecessors, (71), 12 states have return successors, (70), 15 states have call predecessors, (70), 12 states have call successors, (70) Word has length 279 [2024-12-02 06:30:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:26,160 INFO L225 Difference]: With dead ends: 89725 [2024-12-02 06:30:26,160 INFO L226 Difference]: Without dead ends: 47449 [2024-12-02 06:30:26,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4031 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2051, Invalid=11755, Unknown=0, NotChecked=0, Total=13806 [2024-12-02 06:30:26,216 INFO L435 NwaCegarLoop]: 780 mSDtfsCounter, 2667 mSDsluCounter, 8886 mSDsCounter, 0 mSdLazyCounter, 5806 mSolverCounterSat, 945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 9666 SdHoareTripleChecker+Invalid, 6751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 5806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:26,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 9666 Invalid, 6751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [945 Valid, 5806 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 06:30:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47449 states. [2024-12-02 06:30:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47449 to 37736. [2024-12-02 06:30:38,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37736 states, 28379 states have (on average 1.2165333521265724) internal successors, (34524), 28680 states have internal predecessors, (34524), 5629 states have call successors, (5629), 3727 states have call predecessors, (5629), 3727 states have return successors, (5629), 5328 states have call predecessors, (5629), 5629 states have call successors, (5629) [2024-12-02 06:30:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37736 states to 37736 states and 45782 transitions. [2024-12-02 06:30:39,081 INFO L78 Accepts]: Start accepts. Automaton has 37736 states and 45782 transitions. Word has length 279 [2024-12-02 06:30:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:39,082 INFO L471 AbstractCegarLoop]: Abstraction has 37736 states and 45782 transitions. [2024-12-02 06:30:39,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 12.21875) internal successors, (391), 29 states have internal predecessors, (391), 12 states have call successors, (71), 8 states have call predecessors, (71), 12 states have return successors, (70), 15 states have call predecessors, (70), 12 states have call successors, (70) [2024-12-02 06:30:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 37736 states and 45782 transitions. [2024-12-02 06:30:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-12-02 06:30:39,093 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:39,093 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 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, 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] [2024-12-02 06:30:39,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 06:30:39,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-12-02 06:30:39,294 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:39,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1118058229, now seen corresponding path program 1 times [2024-12-02 06:30:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373005484] [2024-12-02 06:30:39,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:39,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-12-02 06:30:39,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:39,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373005484] [2024-12-02 06:30:39,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373005484] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:39,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:39,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:39,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570163301] [2024-12-02 06:30:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:39,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:39,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:39,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:39,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:39,396 INFO L87 Difference]: Start difference. First operand 37736 states and 45782 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 06:30:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:50,451 INFO L93 Difference]: Finished difference Result 68481 states and 83135 transitions. [2024-12-02 06:30:50,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:50,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 282 [2024-12-02 06:30:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:50,609 INFO L225 Difference]: With dead ends: 68481 [2024-12-02 06:30:50,609 INFO L226 Difference]: Without dead ends: 32588 [2024-12-02 06:30:50,651 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 [2024-12-02 06:30:50,651 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 3 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:50,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 698 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:50,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32588 states. [2024-12-02 06:31:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32588 to 32361. [2024-12-02 06:31:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32361 states, 24357 states have (on average 1.2065935870591615) internal successors, (29389), 24616 states have internal predecessors, (29389), 4786 states have call successors, (4786), 3217 states have call predecessors, (4786), 3217 states have return successors, (4786), 4527 states have call predecessors, (4786), 4786 states have call successors, (4786) [2024-12-02 06:31:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32361 states to 32361 states and 38961 transitions. [2024-12-02 06:31:01,983 INFO L78 Accepts]: Start accepts. Automaton has 32361 states and 38961 transitions. Word has length 282 [2024-12-02 06:31:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:01,983 INFO L471 AbstractCegarLoop]: Abstraction has 32361 states and 38961 transitions. [2024-12-02 06:31:01,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 06:31:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 32361 states and 38961 transitions. [2024-12-02 06:31:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-12-02 06:31:01,993 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:01,993 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 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, 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] [2024-12-02 06:31:01,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-12-02 06:31:01,994 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:01,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1854263767, now seen corresponding path program 1 times [2024-12-02 06:31:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:01,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111599132] [2024-12-02 06:31:01,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:01,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 94 proven. 17 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-12-02 06:31:02,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:02,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111599132] [2024-12-02 06:31:02,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111599132] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:02,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207047066] [2024-12-02 06:31:02,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:02,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:02,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:02,845 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:02,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 06:31:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:03,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:31:03,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 192 proven. 92 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 06:31:03,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 80 proven. 25 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-12-02 06:31:03,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207047066] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:31:03,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:31:03,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 24 [2024-12-02 06:31:03,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371195] [2024-12-02 06:31:03,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:03,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 06:31:03,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:03,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 06:31:03,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:31:03,707 INFO L87 Difference]: Start difference. First operand 32361 states and 38961 transitions. Second operand has 24 states, 24 states have (on average 14.25) internal successors, (342), 20 states have internal predecessors, (342), 7 states have call successors, (66), 4 states have call predecessors, (66), 9 states have return successors, (66), 11 states have call predecessors, (66), 7 states have call successors, (66) [2024-12-02 06:31:17,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:17,401 INFO L93 Difference]: Finished difference Result 65310 states and 78590 transitions. [2024-12-02 06:31:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 06:31:17,402 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.25) internal successors, (342), 20 states have internal predecessors, (342), 7 states have call successors, (66), 4 states have call predecessors, (66), 9 states have return successors, (66), 11 states have call predecessors, (66), 7 states have call successors, (66) Word has length 282 [2024-12-02 06:31:17,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:17,561 INFO L225 Difference]: With dead ends: 65310 [2024-12-02 06:31:17,561 INFO L226 Difference]: Without dead ends: 31414 [2024-12-02 06:31:17,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=389, Invalid=2061, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 06:31:17,601 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 1044 mSDsluCounter, 5860 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 6355 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:17,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 6355 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 06:31:17,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31414 states. [2024-12-02 06:31:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31414 to 23423. [2024-12-02 06:31:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23423 states, 17617 states have (on average 1.1907816313787818) internal successors, (20978), 17836 states have internal predecessors, (20978), 3456 states have call successors, (3456), 2349 states have call predecessors, (3456), 2349 states have return successors, (3451), 3237 states have call predecessors, (3451), 3451 states have call successors, (3451) [2024-12-02 06:31:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23423 states to 23423 states and 27885 transitions. [2024-12-02 06:31:25,936 INFO L78 Accepts]: Start accepts. Automaton has 23423 states and 27885 transitions. Word has length 282 [2024-12-02 06:31:25,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:25,937 INFO L471 AbstractCegarLoop]: Abstraction has 23423 states and 27885 transitions. [2024-12-02 06:31:25,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.25) internal successors, (342), 20 states have internal predecessors, (342), 7 states have call successors, (66), 4 states have call predecessors, (66), 9 states have return successors, (66), 11 states have call predecessors, (66), 7 states have call successors, (66) [2024-12-02 06:31:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 23423 states and 27885 transitions. [2024-12-02 06:31:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-12-02 06:31:25,946 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:25,946 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 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, 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] [2024-12-02 06:31:25,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 06:31:26,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-12-02 06:31:26,147 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:26,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2010671766, now seen corresponding path program 1 times [2024-12-02 06:31:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:26,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333370426] [2024-12-02 06:31:26,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 38 proven. 63 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:31:27,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:27,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333370426] [2024-12-02 06:31:27,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333370426] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:27,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351086812] [2024-12-02 06:31:27,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:27,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:27,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:27,429 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:27,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 06:31:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:27,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 06:31:27,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 124 proven. 178 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 06:31:28,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 30 proven. 71 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:31:29,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351086812] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:31:29,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:31:29,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 37 [2024-12-02 06:31:29,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763795675] [2024-12-02 06:31:29,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:29,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 06:31:29,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:29,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 06:31:29,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 06:31:29,942 INFO L87 Difference]: Start difference. First operand 23423 states and 27885 transitions. Second operand has 37 states, 37 states have (on average 11.783783783783784) internal successors, (436), 37 states have internal predecessors, (436), 15 states have call successors, (77), 7 states have call predecessors, (77), 8 states have return successors, (76), 15 states have call predecessors, (76), 15 states have call successors, (76) [2024-12-02 06:31:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:48,291 INFO L93 Difference]: Finished difference Result 50805 states and 60834 transitions. [2024-12-02 06:31:48,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-12-02 06:31:48,291 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 11.783783783783784) internal successors, (436), 37 states have internal predecessors, (436), 15 states have call successors, (77), 7 states have call predecessors, (77), 8 states have return successors, (76), 15 states have call predecessors, (76), 15 states have call successors, (76) Word has length 288 [2024-12-02 06:31:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:48,463 INFO L225 Difference]: With dead ends: 50805 [2024-12-02 06:31:48,464 INFO L226 Difference]: Without dead ends: 29594 [2024-12-02 06:31:48,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4804 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1850, Invalid=14920, Unknown=0, NotChecked=0, Total=16770 [2024-12-02 06:31:48,497 INFO L435 NwaCegarLoop]: 770 mSDtfsCounter, 2400 mSDsluCounter, 9893 mSDsCounter, 0 mSdLazyCounter, 6754 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 10663 SdHoareTripleChecker+Invalid, 7511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 6754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:48,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 10663 Invalid, 7511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 6754 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-12-02 06:31:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29594 states. [2024-12-02 06:31:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29594 to 24986. [2024-12-02 06:31:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24986 states, 18812 states have (on average 1.1916861577716351) internal successors, (22418), 19037 states have internal predecessors, (22418), 3672 states have call successors, (3672), 2501 states have call predecessors, (3672), 2501 states have return successors, (3667), 3447 states have call predecessors, (3667), 3667 states have call successors, (3667) [2024-12-02 06:31:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24986 states to 24986 states and 29757 transitions. [2024-12-02 06:31:57,866 INFO L78 Accepts]: Start accepts. Automaton has 24986 states and 29757 transitions. Word has length 288 [2024-12-02 06:31:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:57,866 INFO L471 AbstractCegarLoop]: Abstraction has 24986 states and 29757 transitions. [2024-12-02 06:31:57,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 11.783783783783784) internal successors, (436), 37 states have internal predecessors, (436), 15 states have call successors, (77), 7 states have call predecessors, (77), 8 states have return successors, (76), 15 states have call predecessors, (76), 15 states have call successors, (76) [2024-12-02 06:31:57,866 INFO L276 IsEmpty]: Start isEmpty. Operand 24986 states and 29757 transitions. [2024-12-02 06:31:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-12-02 06:31:57,877 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:57,877 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 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, 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] [2024-12-02 06:31:57,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 06:31:58,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:58,078 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:58,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:58,078 INFO L85 PathProgramCache]: Analyzing trace with hash -62560207, now seen corresponding path program 1 times [2024-12-02 06:31:58,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:58,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460331411] [2024-12-02 06:31:58,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:58,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 55 proven. 46 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:31:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460331411] [2024-12-02 06:31:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460331411] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122755678] [2024-12-02 06:31:58,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:58,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:58,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:58,916 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:58,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 06:31:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:59,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 06:31:59,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:32:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 190 proven. 112 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 06:32:00,586 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:32:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:32:02,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122755678] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:32:02,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:32:02,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 32 [2024-12-02 06:32:02,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803239374] [2024-12-02 06:32:02,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:32:02,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 06:32:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:02,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 06:32:02,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:32:02,388 INFO L87 Difference]: Start difference. First operand 24986 states and 29757 transitions. Second operand has 32 states, 32 states have (on average 13.75) internal successors, (440), 32 states have internal predecessors, (440), 13 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) [2024-12-02 06:32:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:20,520 INFO L93 Difference]: Finished difference Result 51125 states and 61131 transitions. [2024-12-02 06:32:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 06:32:20,520 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 13.75) internal successors, (440), 32 states have internal predecessors, (440), 13 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) Word has length 291 [2024-12-02 06:32:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:20,696 INFO L225 Difference]: With dead ends: 51125 [2024-12-02 06:32:20,697 INFO L226 Difference]: Without dead ends: 28467 [2024-12-02 06:32:20,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3278 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1364, Invalid=9348, Unknown=0, NotChecked=0, Total=10712 [2024-12-02 06:32:20,731 INFO L435 NwaCegarLoop]: 611 mSDtfsCounter, 1246 mSDsluCounter, 6648 mSDsCounter, 0 mSdLazyCounter, 4682 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 7259 SdHoareTripleChecker+Invalid, 4981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 4682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:20,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 7259 Invalid, 4981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 4682 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 06:32:20,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28467 states. [2024-12-02 06:32:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28467 to 26829. [2024-12-02 06:32:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26829 states, 20205 states have (on average 1.1912892848304875) internal successors, (24070), 20441 states have internal predecessors, (24070), 3934 states have call successors, (3934), 2689 states have call predecessors, (3934), 2689 states have return successors, (3929), 3698 states have call predecessors, (3929), 3929 states have call successors, (3929) [2024-12-02 06:32:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26829 states to 26829 states and 31933 transitions. [2024-12-02 06:32:31,464 INFO L78 Accepts]: Start accepts. Automaton has 26829 states and 31933 transitions. Word has length 291 [2024-12-02 06:32:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:31,464 INFO L471 AbstractCegarLoop]: Abstraction has 26829 states and 31933 transitions. [2024-12-02 06:32:31,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 13.75) internal successors, (440), 32 states have internal predecessors, (440), 13 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) [2024-12-02 06:32:31,464 INFO L276 IsEmpty]: Start isEmpty. Operand 26829 states and 31933 transitions. [2024-12-02 06:32:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-12-02 06:32:31,474 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:31,474 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:31,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 06:32:31,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:31,675 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:31,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1479448393, now seen corresponding path program 1 times [2024-12-02 06:32:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:31,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806857561] [2024-12-02 06:32:31,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 51 proven. 53 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:32:32,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806857561] [2024-12-02 06:32:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806857561] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:32:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355457128] [2024-12-02 06:32:32,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:32,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:32:32,535 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:32:32,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 06:32:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:32,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 06:32:32,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:32:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 183 proven. 122 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 06:32:34,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:32:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 32 proven. 72 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:32:36,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355457128] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:32:36,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:32:36,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 32 [2024-12-02 06:32:36,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743686274] [2024-12-02 06:32:36,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:32:36,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 06:32:36,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:36,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 06:32:36,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:32:36,793 INFO L87 Difference]: Start difference. First operand 26829 states and 31933 transitions. Second operand has 32 states, 32 states have (on average 13.875) internal successors, (444), 32 states have internal predecessors, (444), 13 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) [2024-12-02 06:32:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:54,709 INFO L93 Difference]: Finished difference Result 52806 states and 63156 transitions. [2024-12-02 06:32:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-12-02 06:32:54,709 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 13.875) internal successors, (444), 32 states have internal predecessors, (444), 13 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) Word has length 292 [2024-12-02 06:32:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:54,872 INFO L225 Difference]: With dead ends: 52806 [2024-12-02 06:32:54,872 INFO L226 Difference]: Without dead ends: 28454 [2024-12-02 06:32:54,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2380 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=980, Invalid=7210, Unknown=0, NotChecked=0, Total=8190 [2024-12-02 06:32:54,907 INFO L435 NwaCegarLoop]: 600 mSDtfsCounter, 1303 mSDsluCounter, 6642 mSDsCounter, 0 mSdLazyCounter, 4768 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 7242 SdHoareTripleChecker+Invalid, 5101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 4768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:54,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 7242 Invalid, 5101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 4768 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 06:32:54,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28454 states. [2024-12-02 06:33:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28454 to 26889. [2024-12-02 06:33:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26889 states, 20265 states have (on average 1.191808536886257) internal successors, (24152), 20501 states have internal predecessors, (24152), 3934 states have call successors, (3934), 2689 states have call predecessors, (3934), 2689 states have return successors, (3929), 3698 states have call predecessors, (3929), 3929 states have call successors, (3929) [2024-12-02 06:33:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26889 states to 26889 states and 32015 transitions. [2024-12-02 06:33:05,194 INFO L78 Accepts]: Start accepts. Automaton has 26889 states and 32015 transitions. Word has length 292 [2024-12-02 06:33:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:05,195 INFO L471 AbstractCegarLoop]: Abstraction has 26889 states and 32015 transitions. [2024-12-02 06:33:05,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 13.875) internal successors, (444), 32 states have internal predecessors, (444), 13 states have call successors, (77), 6 states have call predecessors, (77), 7 states have return successors, (76), 13 states have call predecessors, (76), 13 states have call successors, (76) [2024-12-02 06:33:05,195 INFO L276 IsEmpty]: Start isEmpty. Operand 26889 states and 32015 transitions. [2024-12-02 06:33:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-12-02 06:33:05,206 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:05,206 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:05,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 06:33:05,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:05,406 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:05,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash -272620981, now seen corresponding path program 1 times [2024-12-02 06:33:05,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:05,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798736881] [2024-12-02 06:33:05,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:05,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 68 proven. 46 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 06:33:06,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798736881] [2024-12-02 06:33:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798736881] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268204156] [2024-12-02 06:33:06,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:06,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:06,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:06,717 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:06,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 06:33:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:07,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 06:33:07,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 216 proven. 128 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-12-02 06:33:09,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:33:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 42 proven. 72 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 06:33:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268204156] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:33:13,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:33:13,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 16] total 38 [2024-12-02 06:33:13,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294761285] [2024-12-02 06:33:13,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:33:13,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 06:33:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:13,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 06:33:13,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 06:33:13,733 INFO L87 Difference]: Start difference. First operand 26889 states and 32015 transitions. Second operand has 38 states, 38 states have (on average 11.631578947368421) internal successors, (442), 38 states have internal predecessors, (442), 16 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) [2024-12-02 06:33:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:29,677 INFO L93 Difference]: Finished difference Result 51433 states and 61618 transitions. [2024-12-02 06:33:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-12-02 06:33:29,678 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 11.631578947368421) internal successors, (442), 38 states have internal predecessors, (442), 16 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) Word has length 293 [2024-12-02 06:33:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:29,849 INFO L225 Difference]: With dead ends: 51433 [2024-12-02 06:33:29,849 INFO L226 Difference]: Without dead ends: 26983 [2024-12-02 06:33:29,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1297, Invalid=5675, Unknown=0, NotChecked=0, Total=6972 [2024-12-02 06:33:29,881 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 4757 mSDsluCounter, 5568 mSDsCounter, 0 mSdLazyCounter, 3854 mSolverCounterSat, 1563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 6090 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1563 IncrementalHoareTripleChecker+Valid, 3854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:29,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4757 Valid, 6090 Invalid, 5417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1563 Valid, 3854 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 06:33:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26983 states. [2024-12-02 06:33:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26983 to 26124. [2024-12-02 06:33:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26124 states, 19715 states have (on average 1.1910727872178544) internal successors, (23482), 19942 states have internal predecessors, (23482), 3805 states have call successors, (3805), 2603 states have call predecessors, (3805), 2603 states have return successors, (3800), 3578 states have call predecessors, (3800), 3800 states have call successors, (3800) [2024-12-02 06:33:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26124 states to 26124 states and 31087 transitions. [2024-12-02 06:33:41,395 INFO L78 Accepts]: Start accepts. Automaton has 26124 states and 31087 transitions. Word has length 293 [2024-12-02 06:33:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:41,395 INFO L471 AbstractCegarLoop]: Abstraction has 26124 states and 31087 transitions. [2024-12-02 06:33:41,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 11.631578947368421) internal successors, (442), 38 states have internal predecessors, (442), 16 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) [2024-12-02 06:33:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 26124 states and 31087 transitions. [2024-12-02 06:33:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-12-02 06:33:41,405 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:41,405 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 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, 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] [2024-12-02 06:33:41,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 06:33:41,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:41,606 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:41,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1721311564, now seen corresponding path program 1 times [2024-12-02 06:33:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:41,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169842973] [2024-12-02 06:33:41,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 43 proven. 58 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:33:42,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:42,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169842973] [2024-12-02 06:33:42,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169842973] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:42,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555351157] [2024-12-02 06:33:42,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:42,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:42,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:42,503 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:42,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 06:33:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:42,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 06:33:42,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 142 proven. 160 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 06:33:43,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:33:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 67 proven. 34 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:33:43,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555351157] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:33:43,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:33:43,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 18 [2024-12-02 06:33:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954295276] [2024-12-02 06:33:43,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:33:43,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:33:43,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:43,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:33:43,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:33:43,664 INFO L87 Difference]: Start difference. First operand 26124 states and 31087 transitions. Second operand has 18 states, 18 states have (on average 18.22222222222222) internal successors, (328), 18 states have internal predecessors, (328), 7 states have call successors, (68), 6 states have call predecessors, (68), 7 states have return successors, (67), 7 states have call predecessors, (67), 7 states have call successors, (67) [2024-12-02 06:33:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:57,379 INFO L93 Difference]: Finished difference Result 51650 states and 61778 transitions. [2024-12-02 06:33:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 06:33:57,380 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.22222222222222) internal successors, (328), 18 states have internal predecessors, (328), 7 states have call successors, (68), 6 states have call predecessors, (68), 7 states have return successors, (67), 7 states have call predecessors, (67), 7 states have call successors, (67) Word has length 293 [2024-12-02 06:33:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:57,548 INFO L225 Difference]: With dead ends: 51650 [2024-12-02 06:33:57,548 INFO L226 Difference]: Without dead ends: 28006 [2024-12-02 06:33:57,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:33:57,578 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 320 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:57,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 3063 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:33:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28006 states. [2024-12-02 06:34:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28006 to 26007. [2024-12-02 06:34:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26007 states, 19621 states have (on average 1.1898476122521788) internal successors, (23346), 19851 states have internal predecessors, (23346), 3790 states have call successors, (3790), 2595 states have call predecessors, (3790), 2595 states have return successors, (3785), 3560 states have call predecessors, (3785), 3785 states have call successors, (3785) [2024-12-02 06:34:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26007 states to 26007 states and 30921 transitions. [2024-12-02 06:34:09,546 INFO L78 Accepts]: Start accepts. Automaton has 26007 states and 30921 transitions. Word has length 293 [2024-12-02 06:34:09,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:09,546 INFO L471 AbstractCegarLoop]: Abstraction has 26007 states and 30921 transitions. [2024-12-02 06:34:09,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.22222222222222) internal successors, (328), 18 states have internal predecessors, (328), 7 states have call successors, (68), 6 states have call predecessors, (68), 7 states have return successors, (67), 7 states have call predecessors, (67), 7 states have call successors, (67) [2024-12-02 06:34:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 26007 states and 30921 transitions. [2024-12-02 06:34:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-12-02 06:34:09,556 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:09,556 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:09,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 06:34:09,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-12-02 06:34:09,757 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:09,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash 309240393, now seen corresponding path program 1 times [2024-12-02 06:34:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427715551] [2024-12-02 06:34:09,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 54 proven. 58 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 06:34:10,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427715551] [2024-12-02 06:34:10,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427715551] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:34:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810129615] [2024-12-02 06:34:10,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:10,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:34:10,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:34:10,911 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:34:10,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2793f80-e145-4d83-b9ed-ae7b31bd5a17/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 06:34:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:11,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 06:34:11,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:34:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 168 proven. 174 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-12-02 06:34:11,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:34:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 06:34:12,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810129615] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:34:12,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:34:12,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 31 [2024-12-02 06:34:12,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199097977] [2024-12-02 06:34:12,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:34:12,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 06:34:12,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:12,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 06:34:12,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:34:12,870 INFO L87 Difference]: Start difference. First operand 26007 states and 30921 transitions. Second operand has 31 states, 31 states have (on average 13.741935483870968) internal successors, (426), 31 states have internal predecessors, (426), 14 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 14 states have call predecessors, (78), 14 states have call successors, (78)