./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/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_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/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_6d492df7-9d5f-4102-9f8f-9b8ead67599d/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 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:19:39,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:19:39,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:19:39,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:19:39,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:19:39,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:19:39,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:19:39,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:19:39,364 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:19:39,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:19:39,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:19:39,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:19:39,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:19:39,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:19:39,365 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:19:39,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:19:39,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:19:39,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:19:39,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:19:39,365 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:19:39,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:19:39,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:19:39,366 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:19:39,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:19:39,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:19:39,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:19:39,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:19:39,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:19:39,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:19:39,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:19:39,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:19:39,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:19:39,367 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:19:39,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:19:39,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:19:39,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:19:39,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:19:39,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:19:39,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:19:39,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:19:39,368 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_6d492df7-9d5f-4102-9f8f-9b8ead67599d/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 -> 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df [2024-12-02 10:19:39,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:19:39,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:19:39,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:19:39,586 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:19:39,587 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:19:39,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-12-02 10:19:42,194 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/data/119425d7b/81feb2ce578240a0baedf77275c0bb6c/FLAG52934f7ba [2024-12-02 10:19:42,402 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:19:42,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-12-02 10:19:42,412 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/data/119425d7b/81feb2ce578240a0baedf77275c0bb6c/FLAG52934f7ba [2024-12-02 10:19:42,751 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/data/119425d7b/81feb2ce578240a0baedf77275c0bb6c [2024-12-02 10:19:42,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:19:42,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:19:42,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:19:42,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:19:42,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:19:42,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:19:42" (1/1) ... [2024-12-02 10:19:42,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a5a146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:42, skipping insertion in model container [2024-12-02 10:19:42,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:19:42" (1/1) ... [2024-12-02 10:19:42,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:19:42,974 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_6d492df7-9d5f-4102-9f8f-9b8ead67599d/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2024-12-02 10:19:42,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:19:42,987 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:19:43,039 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_6d492df7-9d5f-4102-9f8f-9b8ead67599d/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2024-12-02 10:19:43,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:19:43,053 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:19:43,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43 WrapperNode [2024-12-02 10:19:43,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:19:43,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:19:43,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:19:43,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:19:43,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,098 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 507 [2024-12-02 10:19:43,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:19:43,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:19:43,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:19:43,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:19:43,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,125 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 10:19:43,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,137 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:19:43,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:19:43,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:19:43,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:19:43,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (1/1) ... [2024-12-02 10:19:43,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:19:43,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:19:43,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:19:43,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:19:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-12-02 10:19:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-12-02 10:19:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:19:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-12-02 10:19:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-12-02 10:19:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-12-02 10:19:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-12-02 10:19:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:19:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:19:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:19:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-12-02 10:19:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-12-02 10:19:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:19:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:19:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-12-02 10:19:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-12-02 10:19:43,295 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:19:43,297 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:19:43,798 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-12-02 10:19:43,798 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:19:43,811 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:19:43,811 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 10:19:43,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:19:43 BoogieIcfgContainer [2024-12-02 10:19:43,812 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:19:43,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:19:43,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:19:43,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:19:43,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:19:42" (1/3) ... [2024-12-02 10:19:43,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f03e48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:19:43, skipping insertion in model container [2024-12-02 10:19:43,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:19:43" (2/3) ... [2024-12-02 10:19:43,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f03e48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:19:43, skipping insertion in model container [2024-12-02 10:19:43,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:19:43" (3/3) ... [2024-12-02 10:19:43,821 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-12-02 10:19:43,836 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:19:43,838 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c that has 7 procedures, 173 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:19:43,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:19:43,907 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;@6700f452, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:19:43,907 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:19:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 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 10:19:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-02 10:19:43,918 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:43,919 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:19:43,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:43,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:43,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1815111432, now seen corresponding path program 1 times [2024-12-02 10:19:43,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:43,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100822894] [2024-12-02 10:19:43,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:43,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:44,133 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 10:19:44,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:44,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100822894] [2024-12-02 10:19:44,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100822894] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:44,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:44,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:19:44,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133588901] [2024-12-02 10:19:44,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:44,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:19:44,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:44,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:19:44,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:19:44,155 INFO L87 Difference]: Start difference. First operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 10:19:44,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:44,190 INFO L93 Difference]: Finished difference Result 326 states and 539 transitions. [2024-12-02 10:19:44,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:19:44,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 28 [2024-12-02 10:19:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:44,198 INFO L225 Difference]: With dead ends: 326 [2024-12-02 10:19:44,198 INFO L226 Difference]: Without dead ends: 169 [2024-12-02 10:19:44,201 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 10:19:44,203 INFO L435 NwaCegarLoop]: 264 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, 264 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 10:19:44,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:44,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-12-02 10:19:44,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-12-02 10:19:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.5488721804511278) internal successors, (206), 134 states have internal predecessors, (206), 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 10:19:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 264 transitions. [2024-12-02 10:19:44,246 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 264 transitions. Word has length 28 [2024-12-02 10:19:44,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:44,246 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 264 transitions. [2024-12-02 10:19:44,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 10:19:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 264 transitions. [2024-12-02 10:19:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-02 10:19:44,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:44,248 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] [2024-12-02 10:19:44,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:19:44,249 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:44,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:44,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1596256714, now seen corresponding path program 1 times [2024-12-02 10:19:44,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:44,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001048253] [2024-12-02 10:19:44,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:44,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:44,471 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 10:19:44,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:44,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001048253] [2024-12-02 10:19:44,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001048253] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:44,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:44,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:19:44,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242402860] [2024-12-02 10:19:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:44,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:19:44,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:44,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:19:44,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:19:44,473 INFO L87 Difference]: Start difference. First operand 169 states and 264 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 10:19:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:44,562 INFO L93 Difference]: Finished difference Result 324 states and 502 transitions. [2024-12-02 10:19:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:19:44,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 28 [2024-12-02 10:19:44,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:44,564 INFO L225 Difference]: With dead ends: 324 [2024-12-02 10:19:44,565 INFO L226 Difference]: Without dead ends: 169 [2024-12-02 10:19:44,566 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 10:19:44,567 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:19:44,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1278 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:19:44,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-12-02 10:19:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-12-02 10:19:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.4586466165413534) internal successors, (194), 134 states have internal predecessors, (194), 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 10:19:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 252 transitions. [2024-12-02 10:19:44,582 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 252 transitions. Word has length 28 [2024-12-02 10:19:44,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:44,582 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 252 transitions. [2024-12-02 10:19:44,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 10:19:44,583 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 252 transitions. [2024-12-02 10:19:44,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 10:19:44,583 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:44,583 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:19:44,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:19:44,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:44,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash 187133938, now seen corresponding path program 1 times [2024-12-02 10:19:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:44,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255096813] [2024-12-02 10:19:44,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:44,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:44,765 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 10:19:44,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:44,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255096813] [2024-12-02 10:19:44,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255096813] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:44,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:44,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:44,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208674536] [2024-12-02 10:19:44,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:44,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:44,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:44,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:44,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:44,767 INFO L87 Difference]: Start difference. First operand 169 states and 252 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (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 10:19:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:44,828 INFO L93 Difference]: Finished difference Result 325 states and 494 transitions. [2024-12-02 10:19:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:44,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (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 39 [2024-12-02 10:19:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:44,830 INFO L225 Difference]: With dead ends: 325 [2024-12-02 10:19:44,830 INFO L226 Difference]: Without dead ends: 173 [2024-12-02 10:19:44,831 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 10:19:44,832 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 3 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 728 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 10:19:44,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 728 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-12-02 10:19:44,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-12-02 10:19:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 136 states have (on average 1.4485294117647058) internal successors, (197), 137 states have internal predecessors, (197), 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 10:19:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 255 transitions. [2024-12-02 10:19:44,855 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 255 transitions. Word has length 39 [2024-12-02 10:19:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:44,855 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 255 transitions. [2024-12-02 10:19:44,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (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 10:19:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 255 transitions. [2024-12-02 10:19:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 10:19:44,857 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:44,857 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] [2024-12-02 10:19:44,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:19:44,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:44,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:44,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1556220768, now seen corresponding path program 1 times [2024-12-02 10:19:44,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:44,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375896959] [2024-12-02 10:19:44,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:44,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:44,952 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 10:19:44,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:44,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375896959] [2024-12-02 10:19:44,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375896959] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:44,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:44,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:19:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728694576] [2024-12-02 10:19:44,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:44,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:19:44,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:44,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:19:44,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:19:44,953 INFO L87 Difference]: Start difference. First operand 173 states and 255 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 10:19:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:44,993 INFO L93 Difference]: Finished difference Result 476 states and 713 transitions. [2024-12-02 10:19:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:19:44,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 55 [2024-12-02 10:19:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:44,996 INFO L225 Difference]: With dead ends: 476 [2024-12-02 10:19:44,996 INFO L226 Difference]: Without dead ends: 320 [2024-12-02 10:19:44,997 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 10:19:44,998 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 208 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 500 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 10:19:44,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 500 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:44,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-12-02 10:19:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2024-12-02 10:19:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 243 states have (on average 1.4691358024691359) internal successors, (357), 245 states have internal predecessors, (357), 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 10:19:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 471 transitions. [2024-12-02 10:19:45,021 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 471 transitions. Word has length 55 [2024-12-02 10:19:45,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:45,022 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 471 transitions. [2024-12-02 10:19:45,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 10:19:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 471 transitions. [2024-12-02 10:19:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 10:19:45,023 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:45,023 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 10:19:45,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:19:45,023 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:45,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1976715472, now seen corresponding path program 1 times [2024-12-02 10:19:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064164575] [2024-12-02 10:19:45,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:45,111 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 10:19:45,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:45,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064164575] [2024-12-02 10:19:45,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064164575] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:45,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:19:45,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833533329] [2024-12-02 10:19:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:45,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:19:45,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:45,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:19:45,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:19:45,112 INFO L87 Difference]: Start difference. First operand 315 states and 471 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 10:19:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:45,167 INFO L93 Difference]: Finished difference Result 887 states and 1337 transitions. [2024-12-02 10:19:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:19:45,168 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 10:19:45,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:45,173 INFO L225 Difference]: With dead ends: 887 [2024-12-02 10:19:45,174 INFO L226 Difference]: Without dead ends: 589 [2024-12-02 10:19:45,175 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 10:19:45,175 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 204 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 517 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 10:19:45,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 517 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:45,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-12-02 10:19:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 574. [2024-12-02 10:19:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 432 states have (on average 1.474537037037037) internal successors, (637), 436 states have internal predecessors, (637), 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 10:19:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 863 transitions. [2024-12-02 10:19:45,234 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 863 transitions. Word has length 56 [2024-12-02 10:19:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:45,234 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 863 transitions. [2024-12-02 10:19:45,234 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 10:19:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 863 transitions. [2024-12-02 10:19:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 10:19:45,236 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:45,236 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 10:19:45,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:19:45,236 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:45,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1038388146, now seen corresponding path program 1 times [2024-12-02 10:19:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604050829] [2024-12-02 10:19:45,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:45,405 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 10:19:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604050829] [2024-12-02 10:19:45,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604050829] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:45,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:45,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:19:45,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698961216] [2024-12-02 10:19:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:45,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:19:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:45,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:19:45,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:19:45,407 INFO L87 Difference]: Start difference. First operand 574 states and 863 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 10:19:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:45,615 INFO L93 Difference]: Finished difference Result 1224 states and 1839 transitions. [2024-12-02 10:19:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:19:45,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 10:19:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:45,621 INFO L225 Difference]: With dead ends: 1224 [2024-12-02 10:19:45,621 INFO L226 Difference]: Without dead ends: 667 [2024-12-02 10:19:45,623 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 10:19:45,624 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 349 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 642 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 10:19:45,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 642 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:19:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-12-02 10:19:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 651. [2024-12-02 10:19:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 501 states have (on average 1.4610778443113772) internal successors, (732), 504 states have internal predecessors, (732), 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 10:19:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 966 transitions. [2024-12-02 10:19:45,703 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 966 transitions. Word has length 56 [2024-12-02 10:19:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:45,704 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 966 transitions. [2024-12-02 10:19:45,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 10:19:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 966 transitions. [2024-12-02 10:19:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 10:19:45,706 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:45,706 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 10:19:45,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:19:45,706 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:45,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1231779263, now seen corresponding path program 1 times [2024-12-02 10:19:45,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:45,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573327005] [2024-12-02 10:19:45,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:45,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:45,876 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 10:19:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573327005] [2024-12-02 10:19:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573327005] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:45,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:45,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:19:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658880603] [2024-12-02 10:19:45,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:45,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:19:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:45,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:19:45,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:19:45,878 INFO L87 Difference]: Start difference. First operand 651 states and 966 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 10:19:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:46,075 INFO L93 Difference]: Finished difference Result 1228 states and 1839 transitions. [2024-12-02 10:19:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:19:46,076 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 10:19:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:46,081 INFO L225 Difference]: With dead ends: 1228 [2024-12-02 10:19:46,081 INFO L226 Difference]: Without dead ends: 671 [2024-12-02 10:19:46,083 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 10:19:46,084 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 349 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 642 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 10:19:46,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 642 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:19:46,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-12-02 10:19:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 659. [2024-12-02 10:19:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4538310412573674) internal successors, (740), 512 states have internal predecessors, (740), 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 10:19:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 974 transitions. [2024-12-02 10:19:46,156 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 974 transitions. Word has length 57 [2024-12-02 10:19:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:46,157 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 974 transitions. [2024-12-02 10:19:46,157 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 10:19:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 974 transitions. [2024-12-02 10:19:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 10:19:46,158 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:46,158 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] [2024-12-02 10:19:46,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:19:46,158 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:46,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:46,159 INFO L85 PathProgramCache]: Analyzing trace with hash 496428017, now seen corresponding path program 1 times [2024-12-02 10:19:46,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:46,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903539629] [2024-12-02 10:19:46,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:46,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:46,336 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 10:19:46,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903539629] [2024-12-02 10:19:46,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903539629] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:46,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:46,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:46,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127238412] [2024-12-02 10:19:46,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:46,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:46,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:46,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:46,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:46,337 INFO L87 Difference]: Start difference. First operand 659 states and 974 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 10:19:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:46,513 INFO L93 Difference]: Finished difference Result 1216 states and 1819 transitions. [2024-12-02 10:19:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 59 [2024-12-02 10:19:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:46,519 INFO L225 Difference]: With dead ends: 1216 [2024-12-02 10:19:46,519 INFO L226 Difference]: Without dead ends: 659 [2024-12-02 10:19:46,521 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 10:19:46,522 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 52 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 640 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 10:19:46,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 640 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:19:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-12-02 10:19:46,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2024-12-02 10:19:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4459724950884087) internal successors, (736), 512 states have internal predecessors, (736), 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 10:19:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 970 transitions. [2024-12-02 10:19:46,590 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 970 transitions. Word has length 59 [2024-12-02 10:19:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:46,591 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 970 transitions. [2024-12-02 10:19:46,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 10:19:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 970 transitions. [2024-12-02 10:19:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 10:19:46,592 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:46,592 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 10:19:46,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:19:46,593 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:46,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash -906823040, now seen corresponding path program 1 times [2024-12-02 10:19:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:46,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010762097] [2024-12-02 10:19:46,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:46,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:46,760 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 10:19:46,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:46,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010762097] [2024-12-02 10:19:46,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010762097] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:46,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:46,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367959474] [2024-12-02 10:19:46,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:46,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:46,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:46,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:46,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:46,762 INFO L87 Difference]: Start difference. First operand 659 states and 970 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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 10:19:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:46,812 INFO L93 Difference]: Finished difference Result 1236 states and 1843 transitions. [2024-12-02 10:19:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:46,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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 60 [2024-12-02 10:19:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:46,816 INFO L225 Difference]: With dead ends: 1236 [2024-12-02 10:19:46,817 INFO L226 Difference]: Without dead ends: 679 [2024-12-02 10:19:46,818 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 10:19:46,818 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 4 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 740 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 10:19:46,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-12-02 10:19:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2024-12-02 10:19:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 525 states have (on average 1.4323809523809523) internal successors, (752), 528 states have internal predecessors, (752), 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 10:19:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 986 transitions. [2024-12-02 10:19:46,849 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 986 transitions. Word has length 60 [2024-12-02 10:19:46,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:46,850 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 986 transitions. [2024-12-02 10:19:46,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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 10:19:46,850 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 986 transitions. [2024-12-02 10:19:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 10:19:46,851 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:46,851 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] [2024-12-02 10:19:46,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:19:46,851 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:46,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:46,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1438142618, now seen corresponding path program 1 times [2024-12-02 10:19:46,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:46,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691285811] [2024-12-02 10:19:46,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:46,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:46,972 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 10:19:46,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:46,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691285811] [2024-12-02 10:19:46,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691285811] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:46,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:46,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:46,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981557317] [2024-12-02 10:19:46,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:46,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:46,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:46,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:46,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:46,973 INFO L87 Difference]: Start difference. First operand 679 states and 986 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 10:19:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:47,044 INFO L93 Difference]: Finished difference Result 1276 states and 1887 transitions. [2024-12-02 10:19:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:47,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 68 [2024-12-02 10:19:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:47,048 INFO L225 Difference]: With dead ends: 1276 [2024-12-02 10:19:47,048 INFO L226 Difference]: Without dead ends: 699 [2024-12-02 10:19:47,050 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 10:19:47,050 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 4 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 726 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 10:19:47,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-12-02 10:19:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2024-12-02 10:19:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 541 states have (on average 1.4195933456561922) internal successors, (768), 544 states have internal predecessors, (768), 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 10:19:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1002 transitions. [2024-12-02 10:19:47,083 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1002 transitions. Word has length 68 [2024-12-02 10:19:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:47,083 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 1002 transitions. [2024-12-02 10:19:47,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 10:19:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1002 transitions. [2024-12-02 10:19:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 10:19:47,084 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:47,084 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] [2024-12-02 10:19:47,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:19:47,085 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:47,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash 288384240, now seen corresponding path program 1 times [2024-12-02 10:19:47,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:47,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238061481] [2024-12-02 10:19:47,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:47,209 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 10:19:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238061481] [2024-12-02 10:19:47,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238061481] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:47,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:47,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398392027] [2024-12-02 10:19:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:47,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:47,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:47,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:47,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:47,211 INFO L87 Difference]: Start difference. First operand 699 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 10:19:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:47,275 INFO L93 Difference]: Finished difference Result 1312 states and 1903 transitions. [2024-12-02 10:19:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:47,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 76 [2024-12-02 10:19:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:47,279 INFO L225 Difference]: With dead ends: 1312 [2024-12-02 10:19:47,279 INFO L226 Difference]: Without dead ends: 715 [2024-12-02 10:19:47,280 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 10:19:47,281 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 736 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 10:19:47,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 736 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:47,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-12-02 10:19:47,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2024-12-02 10:19:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 553 states have (on average 1.410488245931284) internal successors, (780), 556 states have internal predecessors, (780), 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 10:19:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1014 transitions. [2024-12-02 10:19:47,312 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1014 transitions. Word has length 76 [2024-12-02 10:19:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:47,313 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1014 transitions. [2024-12-02 10:19:47,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 10:19:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1014 transitions. [2024-12-02 10:19:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 10:19:47,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:47,314 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] [2024-12-02 10:19:47,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 10:19:47,314 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:47,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1610123753, now seen corresponding path program 1 times [2024-12-02 10:19:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:47,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542714916] [2024-12-02 10:19:47,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:47,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:47,436 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 10:19:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542714916] [2024-12-02 10:19:47,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542714916] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:47,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:47,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931993383] [2024-12-02 10:19:47,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:47,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:47,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:47,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:47,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:47,438 INFO L87 Difference]: Start difference. First operand 715 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 10:19:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:47,511 INFO L93 Difference]: Finished difference Result 1348 states and 1943 transitions. [2024-12-02 10:19:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:47,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 76 [2024-12-02 10:19:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:47,515 INFO L225 Difference]: With dead ends: 1348 [2024-12-02 10:19:47,515 INFO L226 Difference]: Without dead ends: 735 [2024-12-02 10:19:47,516 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 10:19:47,517 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 4 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 726 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 10:19:47,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:47,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-12-02 10:19:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2024-12-02 10:19:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 569 states have (on average 1.398945518453427) internal successors, (796), 572 states have internal predecessors, (796), 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 10:19:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1030 transitions. [2024-12-02 10:19:47,548 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1030 transitions. Word has length 76 [2024-12-02 10:19:47,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:47,548 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1030 transitions. [2024-12-02 10:19:47,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 10:19:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1030 transitions. [2024-12-02 10:19:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 10:19:47,549 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:47,549 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] [2024-12-02 10:19:47,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:19:47,550 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:47,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:47,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1718962299, now seen corresponding path program 1 times [2024-12-02 10:19:47,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:47,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933850589] [2024-12-02 10:19:47,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:47,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:47,696 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 10:19:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933850589] [2024-12-02 10:19:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933850589] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:47,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648979429] [2024-12-02 10:19:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:47,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:47,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:47,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:47,698 INFO L87 Difference]: Start difference. First operand 735 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (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 10:19:47,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:47,773 INFO L93 Difference]: Finished difference Result 1392 states and 1971 transitions. [2024-12-02 10:19:47,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:47,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (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 84 [2024-12-02 10:19:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:47,777 INFO L225 Difference]: With dead ends: 1392 [2024-12-02 10:19:47,777 INFO L226 Difference]: Without dead ends: 759 [2024-12-02 10:19:47,778 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 10:19:47,779 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 5 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 738 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 10:19:47,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 738 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2024-12-02 10:19:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2024-12-02 10:19:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 589 states have (on average 1.3853989813242784) internal successors, (816), 592 states have internal predecessors, (816), 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 10:19:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1050 transitions. [2024-12-02 10:19:47,812 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1050 transitions. Word has length 84 [2024-12-02 10:19:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:47,812 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1050 transitions. [2024-12-02 10:19:47,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (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 10:19:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1050 transitions. [2024-12-02 10:19:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 10:19:47,814 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:47,814 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] [2024-12-02 10:19:47,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:19:47,815 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:47,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:47,815 INFO L85 PathProgramCache]: Analyzing trace with hash 966027762, now seen corresponding path program 1 times [2024-12-02 10:19:47,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:47,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614018760] [2024-12-02 10:19:47,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:47,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:48,234 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 10:19:48,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:48,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614018760] [2024-12-02 10:19:48,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614018760] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:48,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:48,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:19:48,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588370925] [2024-12-02 10:19:48,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:48,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:19:48,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:48,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:19:48,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:19:48,236 INFO L87 Difference]: Start difference. First operand 759 states and 1050 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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 10:19:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:48,523 INFO L93 Difference]: Finished difference Result 1983 states and 2731 transitions. [2024-12-02 10:19:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:19:48,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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 87 [2024-12-02 10:19:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:48,529 INFO L225 Difference]: With dead ends: 1983 [2024-12-02 10:19:48,529 INFO L226 Difference]: Without dead ends: 1326 [2024-12-02 10:19:48,531 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 10:19:48,531 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 187 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:19:48,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1426 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:19:48,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2024-12-02 10:19:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 912. [2024-12-02 10:19:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 705 states have (on average 1.374468085106383) internal successors, (969), 709 states have internal predecessors, (969), 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 10:19:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1251 transitions. [2024-12-02 10:19:48,578 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1251 transitions. Word has length 87 [2024-12-02 10:19:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:48,578 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1251 transitions. [2024-12-02 10:19:48,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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 10:19:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1251 transitions. [2024-12-02 10:19:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 10:19:48,580 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:48,580 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] [2024-12-02 10:19:48,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 10:19:48,580 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:48,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:48,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2026376801, now seen corresponding path program 1 times [2024-12-02 10:19:48,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:48,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714140116] [2024-12-02 10:19:48,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:48,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:48,682 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 10:19:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714140116] [2024-12-02 10:19:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714140116] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:48,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411796455] [2024-12-02 10:19:48,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:48,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:48,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:48,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:48,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:48,683 INFO L87 Difference]: Start difference. First operand 912 states and 1251 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 10:19:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:48,748 INFO L93 Difference]: Finished difference Result 1697 states and 2351 transitions. [2024-12-02 10:19:48,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:48,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 91 [2024-12-02 10:19:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:48,753 INFO L225 Difference]: With dead ends: 1697 [2024-12-02 10:19:48,753 INFO L226 Difference]: Without dead ends: 932 [2024-12-02 10:19:48,754 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 10:19:48,755 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 736 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 10:19:48,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 736 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-12-02 10:19:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2024-12-02 10:19:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 724 states have internal predecessors, (984), 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 10:19:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1266 transitions. [2024-12-02 10:19:48,796 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1266 transitions. Word has length 91 [2024-12-02 10:19:48,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:48,796 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 1266 transitions. [2024-12-02 10:19:48,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 10:19:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1266 transitions. [2024-12-02 10:19:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 10:19:48,797 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:48,797 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] [2024-12-02 10:19:48,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 10:19:48,797 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:48,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1456343440, now seen corresponding path program 1 times [2024-12-02 10:19:48,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:48,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135667136] [2024-12-02 10:19:48,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:48,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:49,045 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 10:19:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135667136] [2024-12-02 10:19:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135667136] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:19:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371659289] [2024-12-02 10:19:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:49,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:19:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:49,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:19:49,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:19:49,047 INFO L87 Difference]: Start difference. First operand 932 states and 1266 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 10:19:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:49,187 INFO L93 Difference]: Finished difference Result 1343 states and 1926 transitions. [2024-12-02 10:19:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:19:49,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 90 [2024-12-02 10:19:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:49,193 INFO L225 Difference]: With dead ends: 1343 [2024-12-02 10:19:49,193 INFO L226 Difference]: Without dead ends: 1341 [2024-12-02 10:19:49,194 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 10:19:49,194 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 136 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1979 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 10:19:49,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1979 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-12-02 10:19:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 934. [2024-12-02 10:19:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 725 states have internal predecessors, (984), 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 10:19:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1268 transitions. [2024-12-02 10:19:49,257 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1268 transitions. Word has length 90 [2024-12-02 10:19:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:49,257 INFO L471 AbstractCegarLoop]: Abstraction has 934 states and 1268 transitions. [2024-12-02 10:19:49,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 10:19:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1268 transitions. [2024-12-02 10:19:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 10:19:49,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:49,259 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] [2024-12-02 10:19:49,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 10:19:49,259 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:49,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 914249721, now seen corresponding path program 1 times [2024-12-02 10:19:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:49,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251107883] [2024-12-02 10:19:49,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:49,371 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 10:19:49,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:49,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251107883] [2024-12-02 10:19:49,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251107883] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:49,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:49,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:19:49,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950796717] [2024-12-02 10:19:49,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:49,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:19:49,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:49,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:19:49,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:19:49,373 INFO L87 Difference]: Start difference. First operand 934 states and 1268 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, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:19:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:49,545 INFO L93 Difference]: Finished difference Result 1740 states and 2381 transitions. [2024-12-02 10:19:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:19:49,546 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, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2024-12-02 10:19:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:49,551 INFO L225 Difference]: With dead ends: 1740 [2024-12-02 10:19:49,552 INFO L226 Difference]: Without dead ends: 994 [2024-12-02 10:19:49,554 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 10:19:49,554 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 236 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1435 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 10:19:49,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1435 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:19:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-12-02 10:19:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 952. [2024-12-02 10:19:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 743 states have (on average 1.3620457604306864) internal successors, (1012), 752 states have internal predecessors, (1012), 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 10:19:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1284 transitions. [2024-12-02 10:19:49,622 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1284 transitions. Word has length 93 [2024-12-02 10:19:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:49,623 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1284 transitions. [2024-12-02 10:19:49,623 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, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:19:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1284 transitions. [2024-12-02 10:19:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 10:19:49,624 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:49,624 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] [2024-12-02 10:19:49,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 10:19:49,624 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:49,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1793206136, now seen corresponding path program 1 times [2024-12-02 10:19:49,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:49,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920334792] [2024-12-02 10:19:49,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:49,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:50,158 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 10:19:50,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:50,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920334792] [2024-12-02 10:19:50,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920334792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:50,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:50,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:19:50,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958311785] [2024-12-02 10:19:50,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:50,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:19:50,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:50,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:19:50,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:19:50,160 INFO L87 Difference]: Start difference. First operand 952 states and 1284 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 10:19:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:50,385 INFO L93 Difference]: Finished difference Result 1725 states and 2342 transitions. [2024-12-02 10:19:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:19:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 95 [2024-12-02 10:19:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:50,391 INFO L225 Difference]: With dead ends: 1725 [2024-12-02 10:19:50,391 INFO L226 Difference]: Without dead ends: 951 [2024-12-02 10:19:50,393 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 10:19:50,394 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 131 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1511 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 10:19:50,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1511 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:19:50,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2024-12-02 10:19:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 941. [2024-12-02 10:19:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 735 states have (on average 1.3605442176870748) internal successors, (1000), 744 states have internal predecessors, (1000), 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 10:19:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1268 transitions. [2024-12-02 10:19:50,457 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1268 transitions. Word has length 95 [2024-12-02 10:19:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:50,457 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1268 transitions. [2024-12-02 10:19:50,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 10:19:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1268 transitions. [2024-12-02 10:19:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 10:19:50,458 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:50,459 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] [2024-12-02 10:19:50,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 10:19:50,459 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:50,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:50,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1630829129, now seen corresponding path program 1 times [2024-12-02 10:19:50,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:50,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749379850] [2024-12-02 10:19:50,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:50,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:50,982 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 10:19:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:50,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749379850] [2024-12-02 10:19:50,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749379850] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:50,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:50,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:19:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164357366] [2024-12-02 10:19:50,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:50,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:19:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:50,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:19:50,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:19:50,983 INFO L87 Difference]: Start difference. First operand 941 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 10:19:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:51,421 INFO L93 Difference]: Finished difference Result 1792 states and 2402 transitions. [2024-12-02 10:19:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:19:51,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 10:19:51,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:51,427 INFO L225 Difference]: With dead ends: 1792 [2024-12-02 10:19:51,427 INFO L226 Difference]: Without dead ends: 998 [2024-12-02 10:19:51,429 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 10:19:51,429 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 508 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:19:51,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1185 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:19:51,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-12-02 10:19:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 957. [2024-12-02 10:19:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 743 states have (on average 1.3364737550471064) internal successors, (993), 753 states have internal predecessors, (993), 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 10:19:51,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1267 transitions. [2024-12-02 10:19:51,525 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1267 transitions. Word has length 96 [2024-12-02 10:19:51,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:51,525 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1267 transitions. [2024-12-02 10:19:51,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 10:19:51,526 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1267 transitions. [2024-12-02 10:19:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 10:19:51,527 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:51,527 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 10:19:51,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 10:19:51,527 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1901259188, now seen corresponding path program 1 times [2024-12-02 10:19:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:51,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153311120] [2024-12-02 10:19:51,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:51,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:51,634 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 10:19:51,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:51,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153311120] [2024-12-02 10:19:51,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153311120] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:51,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:51,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:51,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765957685] [2024-12-02 10:19:51,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:51,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:51,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:51,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:51,635 INFO L87 Difference]: Start difference. First operand 957 states and 1267 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (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 10:19:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:51,826 INFO L93 Difference]: Finished difference Result 2528 states and 3367 transitions. [2024-12-02 10:19:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:19:51,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (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 97 [2024-12-02 10:19:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:51,835 INFO L225 Difference]: With dead ends: 2528 [2024-12-02 10:19:51,835 INFO L226 Difference]: Without dead ends: 1769 [2024-12-02 10:19:51,837 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 10:19:51,838 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 192 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1106 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 10:19:51,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1106 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2024-12-02 10:19:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1538. [2024-12-02 10:19:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1181 states have (on average 1.3302286198137172) internal successors, (1571), 1197 states have internal predecessors, (1571), 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 10:19:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2033 transitions. [2024-12-02 10:19:51,985 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2033 transitions. Word has length 97 [2024-12-02 10:19:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:51,986 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2033 transitions. [2024-12-02 10:19:51,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (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 10:19:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2033 transitions. [2024-12-02 10:19:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 10:19:51,987 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:51,987 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] [2024-12-02 10:19:51,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 10:19:51,987 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:51,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:51,988 INFO L85 PathProgramCache]: Analyzing trace with hash -985041855, now seen corresponding path program 1 times [2024-12-02 10:19:51,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:51,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320398638] [2024-12-02 10:19:51,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:51,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:52,483 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 10:19:52,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:52,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320398638] [2024-12-02 10:19:52,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320398638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:52,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:52,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:19:52,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106487233] [2024-12-02 10:19:52,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:52,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:19:52,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:52,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:19:52,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:19:52,484 INFO L87 Difference]: Start difference. First operand 1538 states and 2033 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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 10:19:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:53,035 INFO L93 Difference]: Finished difference Result 3136 states and 4141 transitions. [2024-12-02 10:19:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:19:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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 99 [2024-12-02 10:19:53,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:53,045 INFO L225 Difference]: With dead ends: 3136 [2024-12-02 10:19:53,046 INFO L226 Difference]: Without dead ends: 1874 [2024-12-02 10:19:53,049 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 10:19:53,050 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 502 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1302 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 10:19:53,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1302 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:19:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2024-12-02 10:19:53,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1563. [2024-12-02 10:19:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1193 states have (on average 1.3235540653813915) internal successors, (1579), 1210 states have internal predecessors, (1579), 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 10:19:53,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2057 transitions. [2024-12-02 10:19:53,314 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2057 transitions. Word has length 99 [2024-12-02 10:19:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:53,314 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2057 transitions. [2024-12-02 10:19:53,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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 10:19:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2057 transitions. [2024-12-02 10:19:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 10:19:53,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:53,317 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] [2024-12-02 10:19:53,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 10:19:53,317 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:53,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash -8868659, now seen corresponding path program 1 times [2024-12-02 10:19:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:53,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056087936] [2024-12-02 10:19:53,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:53,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:53,441 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 10:19:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056087936] [2024-12-02 10:19:53,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056087936] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:53,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:53,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548674019] [2024-12-02 10:19:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:53,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:53,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:53,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:53,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:53,442 INFO L87 Difference]: Start difference. First operand 1563 states and 2057 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 10:19:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:53,759 INFO L93 Difference]: Finished difference Result 3897 states and 5161 transitions. [2024-12-02 10:19:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:19:53,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 101 [2024-12-02 10:19:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:53,772 INFO L225 Difference]: With dead ends: 3897 [2024-12-02 10:19:53,773 INFO L226 Difference]: Without dead ends: 2651 [2024-12-02 10:19:53,776 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 10:19:53,777 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 198 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1144 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 10:19:53,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2024-12-02 10:19:54,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2452. [2024-12-02 10:19:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1845 states have (on average 1.313821138211382) internal successors, (2424), 1872 states have internal predecessors, (2424), 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 10:19:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3212 transitions. [2024-12-02 10:19:54,072 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3212 transitions. Word has length 101 [2024-12-02 10:19:54,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:54,073 INFO L471 AbstractCegarLoop]: Abstraction has 2452 states and 3212 transitions. [2024-12-02 10:19:54,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 10:19:54,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3212 transitions. [2024-12-02 10:19:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 10:19:54,075 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:54,075 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] [2024-12-02 10:19:54,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 10:19:54,075 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:54,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:54,076 INFO L85 PathProgramCache]: Analyzing trace with hash -151110586, now seen corresponding path program 1 times [2024-12-02 10:19:54,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:54,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966797754] [2024-12-02 10:19:54,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:54,130 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 10:19:54,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966797754] [2024-12-02 10:19:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966797754] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:54,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:54,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:19:54,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174648737] [2024-12-02 10:19:54,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:54,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:19:54,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:54,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:19:54,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:19:54,131 INFO L87 Difference]: Start difference. First operand 2452 states and 3212 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 10:19:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:54,395 INFO L93 Difference]: Finished difference Result 4705 states and 6188 transitions. [2024-12-02 10:19:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:19:54,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 101 [2024-12-02 10:19:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:54,408 INFO L225 Difference]: With dead ends: 4705 [2024-12-02 10:19:54,408 INFO L226 Difference]: Without dead ends: 2461 [2024-12-02 10:19:54,413 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 10:19:54,414 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 3 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 466 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 10:19:54,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 466 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2024-12-02 10:19:54,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2455. [2024-12-02 10:19:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1848 states have (on average 1.3133116883116882) internal successors, (2427), 1875 states have internal predecessors, (2427), 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 10:19:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3215 transitions. [2024-12-02 10:19:54,685 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3215 transitions. Word has length 101 [2024-12-02 10:19:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:54,685 INFO L471 AbstractCegarLoop]: Abstraction has 2455 states and 3215 transitions. [2024-12-02 10:19:54,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 10:19:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3215 transitions. [2024-12-02 10:19:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 10:19:54,687 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:54,687 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] [2024-12-02 10:19:54,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 10:19:54,687 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:54,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash -341042115, now seen corresponding path program 1 times [2024-12-02 10:19:54,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:54,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422663733] [2024-12-02 10:19:54,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:54,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:54,780 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 10:19:54,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422663733] [2024-12-02 10:19:54,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422663733] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:54,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:54,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215154594] [2024-12-02 10:19:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:54,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:54,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:54,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:54,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:54,781 INFO L87 Difference]: Start difference. First operand 2455 states and 3215 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 10:19:55,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:55,092 INFO L93 Difference]: Finished difference Result 5826 states and 7668 transitions. [2024-12-02 10:19:55,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:19:55,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 101 [2024-12-02 10:19:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:55,107 INFO L225 Difference]: With dead ends: 5826 [2024-12-02 10:19:55,107 INFO L226 Difference]: Without dead ends: 3809 [2024-12-02 10:19:55,111 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 10:19:55,112 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 191 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1156 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 10:19:55,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1156 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2024-12-02 10:19:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3376. [2024-12-02 10:19:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2530 states have (on average 1.3094861660079051) internal successors, (3313), 2567 states have internal predecessors, (3313), 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 10:19:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4415 transitions. [2024-12-02 10:19:55,311 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4415 transitions. Word has length 101 [2024-12-02 10:19:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:55,312 INFO L471 AbstractCegarLoop]: Abstraction has 3376 states and 4415 transitions. [2024-12-02 10:19:55,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 10:19:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4415 transitions. [2024-12-02 10:19:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 10:19:55,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:55,314 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 10:19:55,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 10:19:55,314 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:55,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1342850110, now seen corresponding path program 1 times [2024-12-02 10:19:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287330452] [2024-12-02 10:19:55,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:55,446 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 10:19:55,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:55,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287330452] [2024-12-02 10:19:55,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287330452] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:55,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:55,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:55,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345600109] [2024-12-02 10:19:55,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:55,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:55,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:55,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:55,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:55,448 INFO L87 Difference]: Start difference. First operand 3376 states and 4415 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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 10:19:55,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:55,672 INFO L93 Difference]: Finished difference Result 6404 states and 8398 transitions. [2024-12-02 10:19:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:55,672 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), 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 10:19:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:55,686 INFO L225 Difference]: With dead ends: 6404 [2024-12-02 10:19:55,686 INFO L226 Difference]: Without dead ends: 3100 [2024-12-02 10:19:55,691 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 10:19:55,692 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 74 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 725 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 10:19:55,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 725 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-12-02 10:19:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2995. [2024-12-02 10:19:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2226 states have (on average 1.3144654088050314) internal successors, (2926), 2250 states have internal predecessors, (2926), 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 10:19:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3930 transitions. [2024-12-02 10:19:55,878 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3930 transitions. Word has length 102 [2024-12-02 10:19:55,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:55,879 INFO L471 AbstractCegarLoop]: Abstraction has 2995 states and 3930 transitions. [2024-12-02 10:19:55,879 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), 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 10:19:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3930 transitions. [2024-12-02 10:19:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 10:19:55,880 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:55,880 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] [2024-12-02 10:19:55,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 10:19:55,880 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:55,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash 687578534, now seen corresponding path program 1 times [2024-12-02 10:19:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:55,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262878082] [2024-12-02 10:19:55,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:55,919 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 10:19:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:55,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262878082] [2024-12-02 10:19:55,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262878082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:55,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:55,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:19:55,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022589789] [2024-12-02 10:19:55,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:55,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:19:55,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:55,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:19:55,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:19:55,920 INFO L87 Difference]: Start difference. First operand 2995 states and 3930 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 10:19:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:56,115 INFO L93 Difference]: Finished difference Result 5837 states and 7691 transitions. [2024-12-02 10:19:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:19:56,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 104 [2024-12-02 10:19:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:56,128 INFO L225 Difference]: With dead ends: 5837 [2024-12-02 10:19:56,128 INFO L226 Difference]: Without dead ends: 3023 [2024-12-02 10:19:56,132 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 10:19:56,133 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 464 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 10:19:56,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 464 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2024-12-02 10:19:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 3002. [2024-12-02 10:19:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2233 states have (on average 1.3134796238244515) internal successors, (2933), 2257 states have internal predecessors, (2933), 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 10:19:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 3937 transitions. [2024-12-02 10:19:56,327 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 3937 transitions. Word has length 104 [2024-12-02 10:19:56,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:56,328 INFO L471 AbstractCegarLoop]: Abstraction has 3002 states and 3937 transitions. [2024-12-02 10:19:56,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 10:19:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 3937 transitions. [2024-12-02 10:19:56,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 10:19:56,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:56,329 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] [2024-12-02 10:19:56,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 10:19:56,329 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:56,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:56,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1642694862, now seen corresponding path program 1 times [2024-12-02 10:19:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:56,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021571906] [2024-12-02 10:19:56,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:56,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:56,415 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 10:19:56,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:56,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021571906] [2024-12-02 10:19:56,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021571906] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:19:56,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:19:56,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:19:56,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916395363] [2024-12-02 10:19:56,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:19:56,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:19:56,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:56,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:19:56,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:19:56,417 INFO L87 Difference]: Start difference. First operand 3002 states and 3937 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 10:19:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:19:56,580 INFO L93 Difference]: Finished difference Result 5798 states and 7628 transitions. [2024-12-02 10:19:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:19:56,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 104 [2024-12-02 10:19:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:19:56,593 INFO L225 Difference]: With dead ends: 5798 [2024-12-02 10:19:56,593 INFO L226 Difference]: Without dead ends: 2915 [2024-12-02 10:19:56,597 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 10:19:56,597 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 60 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 717 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 10:19:56,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 717 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:19:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2024-12-02 10:19:56,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2759. [2024-12-02 10:19:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2049 states have (on average 1.3128355295265983) internal successors, (2690), 2068 states have internal predecessors, (2690), 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 10:19:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3618 transitions. [2024-12-02 10:19:56,844 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3618 transitions. Word has length 104 [2024-12-02 10:19:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:19:56,844 INFO L471 AbstractCegarLoop]: Abstraction has 2759 states and 3618 transitions. [2024-12-02 10:19:56,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 10:19:56,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3618 transitions. [2024-12-02 10:19:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 10:19:56,850 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:19:56,850 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] [2024-12-02 10:19:56,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 10:19:56,850 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:19:56,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:19:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2091605457, now seen corresponding path program 1 times [2024-12-02 10:19:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:19:56,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577113301] [2024-12-02 10:19:56,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:56,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:19:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 10:19:57,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:19:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577113301] [2024-12-02 10:19:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577113301] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:19:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276986277] [2024-12-02 10:19:57,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:19:57,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:19:57,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:19:57,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:19:57,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:19:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:19:57,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 10:19:57,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:19:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 10:19:57,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:19:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 10:19:57,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276986277] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:19:57,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:19:57,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 19 [2024-12-02 10:19:57,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210338870] [2024-12-02 10:19:57,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:19:57,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 10:19:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:19:57,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 10:19:57,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-12-02 10:19:57,887 INFO L87 Difference]: Start difference. First operand 2759 states and 3618 transitions. Second operand has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2024-12-02 10:20:00,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:00,349 INFO L93 Difference]: Finished difference Result 7165 states and 9381 transitions. [2024-12-02 10:20:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-12-02 10:20:00,349 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) Word has length 153 [2024-12-02 10:20:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:00,369 INFO L225 Difference]: With dead ends: 7165 [2024-12-02 10:20:00,369 INFO L226 Difference]: Without dead ends: 4599 [2024-12-02 10:20:00,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=555, Invalid=2525, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 10:20:00,376 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 1808 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:00,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 4349 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 10:20:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2024-12-02 10:20:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4200. [2024-12-02 10:20:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 3097 states have (on average 1.3067484662576687) internal successors, (4047), 3125 states have internal predecessors, (4047), 720 states have call successors, (720), 382 states have call predecessors, (720), 382 states have return successors, (720), 692 states have call predecessors, (720), 720 states have call successors, (720) [2024-12-02 10:20:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 5487 transitions. [2024-12-02 10:20:00,838 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 5487 transitions. Word has length 153 [2024-12-02 10:20:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:00,838 INFO L471 AbstractCegarLoop]: Abstraction has 4200 states and 5487 transitions. [2024-12-02 10:20:00,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2024-12-02 10:20:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 5487 transitions. [2024-12-02 10:20:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 10:20:00,844 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:00,844 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] [2024-12-02 10:20:00,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:20:01,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 10:20:01,045 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:01,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash 697534266, now seen corresponding path program 1 times [2024-12-02 10:20:01,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:01,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967461350] [2024-12-02 10:20:01,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:01,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 10:20:01,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:01,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967461350] [2024-12-02 10:20:01,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967461350] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:01,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365429374] [2024-12-02 10:20:01,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:01,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:01,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:01,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:01,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:20:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:01,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 10:20:01,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 10:20:02,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-12-02 10:20:02,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365429374] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:02,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 10:20:02,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 15] total 22 [2024-12-02 10:20:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531060095] [2024-12-02 10:20:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:02,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:20:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:02,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:20:02,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:20:02,392 INFO L87 Difference]: Start difference. First operand 4200 states and 5487 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 10:20:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:02,602 INFO L93 Difference]: Finished difference Result 7090 states and 9314 transitions. [2024-12-02 10:20:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:20:02,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 154 [2024-12-02 10:20:02,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:02,611 INFO L225 Difference]: With dead ends: 7090 [2024-12-02 10:20:02,611 INFO L226 Difference]: Without dead ends: 3139 [2024-12-02 10:20:02,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:20:02,616 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:02,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:20:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2024-12-02 10:20:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3139. [2024-12-02 10:20:02,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2338 states have (on average 1.3023952095808384) internal successors, (3045), 2358 states have internal predecessors, (3045), 518 states have call successors, (518), 282 states have call predecessors, (518), 282 states have return successors, (518), 498 states have call predecessors, (518), 518 states have call successors, (518) [2024-12-02 10:20:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4081 transitions. [2024-12-02 10:20:02,883 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4081 transitions. Word has length 154 [2024-12-02 10:20:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:02,884 INFO L471 AbstractCegarLoop]: Abstraction has 3139 states and 4081 transitions. [2024-12-02 10:20:02,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 10:20:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4081 transitions. [2024-12-02 10:20:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 10:20:02,888 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:02,888 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] [2024-12-02 10:20:02,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:20:03,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 10:20:03,088 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:03,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:03,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1323920267, now seen corresponding path program 1 times [2024-12-02 10:20:03,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:03,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844139288] [2024-12-02 10:20:03,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:03,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 10:20:03,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:03,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844139288] [2024-12-02 10:20:03,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844139288] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:03,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520374126] [2024-12-02 10:20:03,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:03,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:03,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:03,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:20:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:03,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 10:20:03,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 10:20:04,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 10:20:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520374126] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:04,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:04,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-12-02 10:20:04,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413573785] [2024-12-02 10:20:04,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:04,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 10:20:04,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:04,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 10:20:04,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-12-02 10:20:04,430 INFO L87 Difference]: Start difference. First operand 3139 states and 4081 transitions. Second operand has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 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 10:20:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:08,424 INFO L93 Difference]: Finished difference Result 8927 states and 11667 transitions. [2024-12-02 10:20:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-12-02 10:20:08,424 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 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 155 [2024-12-02 10:20:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:08,442 INFO L225 Difference]: With dead ends: 8927 [2024-12-02 10:20:08,442 INFO L226 Difference]: Without dead ends: 6066 [2024-12-02 10:20:08,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=985, Invalid=5495, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 10:20:08,449 INFO L435 NwaCegarLoop]: 626 mSDtfsCounter, 2697 mSDsluCounter, 6781 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 7407 SdHoareTripleChecker+Invalid, 4339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:08,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 7407 Invalid, 4339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [948 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 10:20:08,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2024-12-02 10:20:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5180. [2024-12-02 10:20:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3849 states have (on average 1.3070927513639907) internal successors, (5031), 3882 states have internal predecessors, (5031), 861 states have call successors, (861), 469 states have call predecessors, (861), 469 states have return successors, (861), 828 states have call predecessors, (861), 861 states have call successors, (861) [2024-12-02 10:20:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 6753 transitions. [2024-12-02 10:20:09,202 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 6753 transitions. Word has length 155 [2024-12-02 10:20:09,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:09,203 INFO L471 AbstractCegarLoop]: Abstraction has 5180 states and 6753 transitions. [2024-12-02 10:20:09,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 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 10:20:09,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 6753 transitions. [2024-12-02 10:20:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 10:20:09,208 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:09,208 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] [2024-12-02 10:20:09,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:20:09,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:09,409 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:09,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2127382271, now seen corresponding path program 1 times [2024-12-02 10:20:09,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:09,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367184167] [2024-12-02 10:20:09,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-12-02 10:20:10,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367184167] [2024-12-02 10:20:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367184167] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189171076] [2024-12-02 10:20:10,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:10,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:10,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:20:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:10,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:20:10,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 10:20:10,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-12-02 10:20:10,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189171076] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:10,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:10,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-12-02 10:20:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698988174] [2024-12-02 10:20:10,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:10,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 10:20:10,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:10,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 10:20:10,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:20:10,578 INFO L87 Difference]: Start difference. First operand 5180 states and 6753 transitions. Second operand has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) [2024-12-02 10:20:11,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:11,889 INFO L93 Difference]: Finished difference Result 13546 states and 17582 transitions. [2024-12-02 10:20:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 10:20:11,890 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) Word has length 157 [2024-12-02 10:20:11,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:11,910 INFO L225 Difference]: With dead ends: 13546 [2024-12-02 10:20:11,910 INFO L226 Difference]: Without dead ends: 8570 [2024-12-02 10:20:11,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-12-02 10:20:11,916 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 211 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:11,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2792 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:20:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8570 states. [2024-12-02 10:20:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8570 to 5866. [2024-12-02 10:20:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5866 states, 4344 states have (on average 1.304097605893186) internal successors, (5665), 4384 states have internal predecessors, (5665), 978 states have call successors, (978), 543 states have call predecessors, (978), 543 states have return successors, (978), 938 states have call predecessors, (978), 978 states have call successors, (978) [2024-12-02 10:20:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 7621 transitions. [2024-12-02 10:20:12,688 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 7621 transitions. Word has length 157 [2024-12-02 10:20:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:12,688 INFO L471 AbstractCegarLoop]: Abstraction has 5866 states and 7621 transitions. [2024-12-02 10:20:12,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) [2024-12-02 10:20:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 7621 transitions. [2024-12-02 10:20:12,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 10:20:12,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:12,693 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] [2024-12-02 10:20:12,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:20:12,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 10:20:12,894 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:12,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1838933631, now seen corresponding path program 1 times [2024-12-02 10:20:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:12,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567346903] [2024-12-02 10:20:12,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:12,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 10:20:13,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:13,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567346903] [2024-12-02 10:20:13,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567346903] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:13,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987260013] [2024-12-02 10:20:13,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:13,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:13,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:13,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:13,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:20:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:13,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 10:20:13,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 10:20:13,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-12-02 10:20:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987260013] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:13,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 22 [2024-12-02 10:20:14,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504476744] [2024-12-02 10:20:14,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:14,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 10:20:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:14,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 10:20:14,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:20:14,001 INFO L87 Difference]: Start difference. First operand 5866 states and 7621 transitions. Second operand has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 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 10:20:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:16,323 INFO L93 Difference]: Finished difference Result 16410 states and 21931 transitions. [2024-12-02 10:20:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 10:20:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 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 173 [2024-12-02 10:20:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:16,356 INFO L225 Difference]: With dead ends: 16410 [2024-12-02 10:20:16,356 INFO L226 Difference]: Without dead ends: 10652 [2024-12-02 10:20:16,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 10:20:16,366 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 631 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:16,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 3332 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 10:20:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10652 states. [2024-12-02 10:20:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10652 to 6812. [2024-12-02 10:20:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6812 states, 5022 states have (on average 1.2947033054559935) internal successors, (6502), 5072 states have internal predecessors, (6502), 1150 states have call successors, (1150), 639 states have call predecessors, (1150), 639 states have return successors, (1150), 1100 states have call predecessors, (1150), 1150 states have call successors, (1150) [2024-12-02 10:20:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6812 states to 6812 states and 8802 transitions. [2024-12-02 10:20:17,353 INFO L78 Accepts]: Start accepts. Automaton has 6812 states and 8802 transitions. Word has length 173 [2024-12-02 10:20:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:17,354 INFO L471 AbstractCegarLoop]: Abstraction has 6812 states and 8802 transitions. [2024-12-02 10:20:17,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 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 10:20:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6812 states and 8802 transitions. [2024-12-02 10:20:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 10:20:17,359 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:17,359 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] [2024-12-02 10:20:17,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:20:17,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 10:20:17,560 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:17,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash -468352694, now seen corresponding path program 1 times [2024-12-02 10:20:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:17,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193666085] [2024-12-02 10:20:17,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:17,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:20:18,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193666085] [2024-12-02 10:20:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193666085] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966547939] [2024-12-02 10:20:18,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:18,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:18,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:18,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:20:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:18,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:20:18,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 76 proven. 14 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 10:20:19,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:20:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966547939] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:20,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:20,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 30 [2024-12-02 10:20:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958343924] [2024-12-02 10:20:20,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:20,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 10:20:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:20,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 10:20:20,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-12-02 10:20:20,123 INFO L87 Difference]: Start difference. First operand 6812 states and 8802 transitions. Second operand has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-12-02 10:20:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:22,533 INFO L93 Difference]: Finished difference Result 14485 states and 18807 transitions. [2024-12-02 10:20:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 10:20:22,533 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) Word has length 180 [2024-12-02 10:20:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:22,551 INFO L225 Difference]: With dead ends: 14485 [2024-12-02 10:20:22,551 INFO L226 Difference]: Without dead ends: 7992 [2024-12-02 10:20:22,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 10:20:22,559 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 1094 mSDsluCounter, 3821 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 4258 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:22,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 4258 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 10:20:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2024-12-02 10:20:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 7935. [2024-12-02 10:20:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7935 states, 5836 states have (on average 1.2947224126113777) internal successors, (7556), 5897 states have internal predecessors, (7556), 1349 states have call successors, (1349), 749 states have call predecessors, (1349), 749 states have return successors, (1349), 1288 states have call predecessors, (1349), 1349 states have call successors, (1349) [2024-12-02 10:20:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7935 states to 7935 states and 10254 transitions. [2024-12-02 10:20:23,624 INFO L78 Accepts]: Start accepts. Automaton has 7935 states and 10254 transitions. Word has length 180 [2024-12-02 10:20:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:23,624 INFO L471 AbstractCegarLoop]: Abstraction has 7935 states and 10254 transitions. [2024-12-02 10:20:23,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-12-02 10:20:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7935 states and 10254 transitions. [2024-12-02 10:20:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 10:20:23,630 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:23,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:23,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:20:23,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:23,831 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:23,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash 402397944, now seen corresponding path program 1 times [2024-12-02 10:20:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:23,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857123664] [2024-12-02 10:20:23,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-02 10:20:24,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:24,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857123664] [2024-12-02 10:20:24,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857123664] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:20:24,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:20:24,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:20:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574997707] [2024-12-02 10:20:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:20:24,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:20:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:24,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:20:24,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:20:24,038 INFO L87 Difference]: Start difference. First operand 7935 states and 10254 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:26,189 INFO L93 Difference]: Finished difference Result 23447 states and 30380 transitions. [2024-12-02 10:20:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:20:26,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 180 [2024-12-02 10:20:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:26,225 INFO L225 Difference]: With dead ends: 23447 [2024-12-02 10:20:26,225 INFO L226 Difference]: Without dead ends: 15831 [2024-12-02 10:20:26,236 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 10:20:26,236 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 215 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:26,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2478 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:20:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15831 states. [2024-12-02 10:20:28,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15831 to 11392. [2024-12-02 10:20:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11392 states, 8323 states have (on average 1.2926829268292683) internal successors, (10759), 8411 states have internal predecessors, (10759), 1991 states have call successors, (1991), 1077 states have call predecessors, (1991), 1077 states have return successors, (1991), 1903 states have call predecessors, (1991), 1991 states have call successors, (1991) [2024-12-02 10:20:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11392 states to 11392 states and 14741 transitions. [2024-12-02 10:20:28,053 INFO L78 Accepts]: Start accepts. Automaton has 11392 states and 14741 transitions. Word has length 180 [2024-12-02 10:20:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:28,053 INFO L471 AbstractCegarLoop]: Abstraction has 11392 states and 14741 transitions. [2024-12-02 10:20:28,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:20:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 11392 states and 14741 transitions. [2024-12-02 10:20:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 10:20:28,065 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:28,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:28,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 10:20:28,065 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:28,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash 349931155, now seen corresponding path program 1 times [2024-12-02 10:20:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296432094] [2024-12-02 10:20:28,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:28,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:20:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296432094] [2024-12-02 10:20:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296432094] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643762704] [2024-12-02 10:20:29,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:29,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:29,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:29,012 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:29,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:20:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:29,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 10:20:29,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 73 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 10:20:29,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:20:31,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643762704] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:31,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:31,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 28 [2024-12-02 10:20:31,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375628550] [2024-12-02 10:20:31,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:31,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 10:20:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:31,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 10:20:31,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2024-12-02 10:20:31,416 INFO L87 Difference]: Start difference. First operand 11392 states and 14741 transitions. Second operand has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-12-02 10:20:34,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:34,793 INFO L93 Difference]: Finished difference Result 23215 states and 30121 transitions. [2024-12-02 10:20:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 10:20:34,794 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) Word has length 181 [2024-12-02 10:20:34,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:34,820 INFO L225 Difference]: With dead ends: 23215 [2024-12-02 10:20:34,820 INFO L226 Difference]: Without dead ends: 12142 [2024-12-02 10:20:34,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 10:20:34,833 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 887 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:34,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 3315 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 10:20:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12142 states. [2024-12-02 10:20:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 12030. [2024-12-02 10:20:36,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12030 states, 8790 states have (on average 1.2918088737201365) internal successors, (11355), 8884 states have internal predecessors, (11355), 2100 states have call successors, (2100), 1139 states have call predecessors, (2100), 1139 states have return successors, (2100), 2006 states have call predecessors, (2100), 2100 states have call successors, (2100) [2024-12-02 10:20:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12030 states to 12030 states and 15555 transitions. [2024-12-02 10:20:36,513 INFO L78 Accepts]: Start accepts. Automaton has 12030 states and 15555 transitions. Word has length 181 [2024-12-02 10:20:36,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:36,513 INFO L471 AbstractCegarLoop]: Abstraction has 12030 states and 15555 transitions. [2024-12-02 10:20:36,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-12-02 10:20:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 12030 states and 15555 transitions. [2024-12-02 10:20:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 10:20:36,518 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:36,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:36,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:20:36,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 10:20:36,718 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:36,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:36,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1387031853, now seen corresponding path program 1 times [2024-12-02 10:20:36,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:36,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949043283] [2024-12-02 10:20:36,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:20:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:37,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949043283] [2024-12-02 10:20:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949043283] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:37,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575736473] [2024-12-02 10:20:37,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:37,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:37,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:37,007 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:37,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:20:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:37,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 10:20:37,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 68 proven. 22 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 10:20:37,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:20:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575736473] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:38,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:38,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 22 [2024-12-02 10:20:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530780808] [2024-12-02 10:20:38,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:38,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 10:20:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:38,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 10:20:38,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:20:38,049 INFO L87 Difference]: Start difference. First operand 12030 states and 15555 transitions. Second operand has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2024-12-02 10:20:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:20:45,564 INFO L93 Difference]: Finished difference Result 32554 states and 42292 transitions. [2024-12-02 10:20:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-12-02 10:20:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) Word has length 182 [2024-12-02 10:20:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:20:45,606 INFO L225 Difference]: With dead ends: 32554 [2024-12-02 10:20:45,606 INFO L226 Difference]: Without dead ends: 20843 [2024-12-02 10:20:45,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3472 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1536, Invalid=8766, Unknown=0, NotChecked=0, Total=10302 [2024-12-02 10:20:45,622 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 5098 mSDsluCounter, 3885 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 1678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5098 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 4011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1678 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:20:45,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5098 Valid, 4318 Invalid, 4011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1678 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 10:20:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20843 states. [2024-12-02 10:20:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20843 to 19315. [2024-12-02 10:20:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19315 states, 14199 states have (on average 1.2945982111416297) internal successors, (18382), 14347 states have internal predecessors, (18382), 3301 states have call successors, (3301), 1814 states have call predecessors, (3301), 1814 states have return successors, (3301), 3153 states have call predecessors, (3301), 3301 states have call successors, (3301) [2024-12-02 10:20:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19315 states to 19315 states and 24984 transitions. [2024-12-02 10:20:48,739 INFO L78 Accepts]: Start accepts. Automaton has 19315 states and 24984 transitions. Word has length 182 [2024-12-02 10:20:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:20:48,740 INFO L471 AbstractCegarLoop]: Abstraction has 19315 states and 24984 transitions. [2024-12-02 10:20:48,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2024-12-02 10:20:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 19315 states and 24984 transitions. [2024-12-02 10:20:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 10:20:48,746 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:20:48,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:48,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:20:48,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 10:20:48,947 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:20:48,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:20:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1441452950, now seen corresponding path program 1 times [2024-12-02 10:20:48,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:20:48,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273244907] [2024-12-02 10:20:48,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:48,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:20:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:20:49,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:20:49,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273244907] [2024-12-02 10:20:49,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273244907] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:20:49,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317533364] [2024-12-02 10:20:49,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:20:49,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:20:49,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:20:49,556 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:20:49,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:20:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:20:49,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 10:20:49,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:20:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 10:20:50,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:20:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:20:51,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317533364] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:20:51,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:20:51,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 13] total 28 [2024-12-02 10:20:51,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371549602] [2024-12-02 10:20:51,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:20:51,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 10:20:51,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:20:51,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 10:20:51,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-12-02 10:20:51,406 INFO L87 Difference]: Start difference. First operand 19315 states and 24984 transitions. Second operand has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2024-12-02 10:21:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:21:01,187 INFO L93 Difference]: Finished difference Result 40998 states and 53087 transitions. [2024-12-02 10:21:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-12-02 10:21:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) Word has length 182 [2024-12-02 10:21:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:21:01,236 INFO L225 Difference]: With dead ends: 40998 [2024-12-02 10:21:01,236 INFO L226 Difference]: Without dead ends: 22002 [2024-12-02 10:21:01,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1229, Invalid=5413, Unknown=0, NotChecked=0, Total=6642 [2024-12-02 10:21:01,259 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 2485 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:21:01,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 3298 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 10:21:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22002 states. [2024-12-02 10:21:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22002 to 21621. [2024-12-02 10:21:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21621 states, 15927 states have (on average 1.2934639291768695) internal successors, (20601), 16092 states have internal predecessors, (20601), 3664 states have call successors, (3664), 2029 states have call predecessors, (3664), 2029 states have return successors, (3664), 3499 states have call predecessors, (3664), 3664 states have call successors, (3664) [2024-12-02 10:21:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21621 states to 21621 states and 27929 transitions. [2024-12-02 10:21:05,279 INFO L78 Accepts]: Start accepts. Automaton has 21621 states and 27929 transitions. Word has length 182 [2024-12-02 10:21:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:21:05,279 INFO L471 AbstractCegarLoop]: Abstraction has 21621 states and 27929 transitions. [2024-12-02 10:21:05,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2024-12-02 10:21:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 21621 states and 27929 transitions. [2024-12-02 10:21:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 10:21:05,284 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:21:05,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:05,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:21:05,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 10:21:05,484 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:21:05,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:21:05,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1302561290, now seen corresponding path program 1 times [2024-12-02 10:21:05,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:21:05,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902589404] [2024-12-02 10:21:05,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:21:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-12-02 10:21:06,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:21:06,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902589404] [2024-12-02 10:21:06,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902589404] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:21:06,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347580705] [2024-12-02 10:21:06,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:06,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:21:06,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:21:06,157 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:21:06,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:21:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:06,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 10:21:06,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:21:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 10:21:06,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:21:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-12-02 10:21:06,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347580705] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:21:06,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:21:06,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2024-12-02 10:21:06,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109763974] [2024-12-02 10:21:06,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:21:06,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 10:21:06,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:21:06,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 10:21:06,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-12-02 10:21:06,780 INFO L87 Difference]: Start difference. First operand 21621 states and 27929 transitions. Second operand has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 18 states have internal predecessors, (228), 6 states have call successors, (37), 4 states have call predecessors, (37), 8 states have return successors, (37), 9 states have call predecessors, (37), 6 states have call successors, (37) [2024-12-02 10:21:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:21:10,901 INFO L93 Difference]: Finished difference Result 38761 states and 50071 transitions. [2024-12-02 10:21:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 10:21:10,901 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 18 states have internal predecessors, (228), 6 states have call successors, (37), 4 states have call predecessors, (37), 8 states have return successors, (37), 9 states have call predecessors, (37), 6 states have call successors, (37) Word has length 183 [2024-12-02 10:21:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:21:10,946 INFO L225 Difference]: With dead ends: 38761 [2024-12-02 10:21:10,946 INFO L226 Difference]: Without dead ends: 17488 [2024-12-02 10:21:10,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2024-12-02 10:21:10,969 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 1473 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:21:10,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 3354 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 10:21:10,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17488 states. [2024-12-02 10:21:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17488 to 17230. [2024-12-02 10:21:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17230 states, 12791 states have (on average 1.289422250019545) internal successors, (16493), 12920 states have internal predecessors, (16493), 2844 states have call successors, (2844), 1594 states have call predecessors, (2844), 1594 states have return successors, (2844), 2715 states have call predecessors, (2844), 2844 states have call successors, (2844) [2024-12-02 10:21:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17230 states to 17230 states and 22181 transitions. [2024-12-02 10:21:14,494 INFO L78 Accepts]: Start accepts. Automaton has 17230 states and 22181 transitions. Word has length 183 [2024-12-02 10:21:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:21:14,494 INFO L471 AbstractCegarLoop]: Abstraction has 17230 states and 22181 transitions. [2024-12-02 10:21:14,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 18 states have internal predecessors, (228), 6 states have call successors, (37), 4 states have call predecessors, (37), 8 states have return successors, (37), 9 states have call predecessors, (37), 6 states have call successors, (37) [2024-12-02 10:21:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 17230 states and 22181 transitions. [2024-12-02 10:21:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 10:21:14,498 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:21:14,498 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:14,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:21:14,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 10:21:14,699 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:21:14,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:21:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash -668689926, now seen corresponding path program 1 times [2024-12-02 10:21:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:21:14,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305274173] [2024-12-02 10:21:14,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:14,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:21:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-12-02 10:21:15,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:21:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305274173] [2024-12-02 10:21:15,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305274173] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:21:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926185050] [2024-12-02 10:21:15,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:15,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:21:15,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:21:15,296 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:21:15,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:21:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:15,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 10:21:15,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:21:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 102 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 10:21:15,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:21:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 10:21:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926185050] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:21:16,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:21:16,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 9] total 27 [2024-12-02 10:21:16,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616854699] [2024-12-02 10:21:16,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:21:16,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 10:21:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:21:16,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 10:21:16,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2024-12-02 10:21:16,070 INFO L87 Difference]: Start difference. First operand 17230 states and 22181 transitions. Second operand has 27 states, 27 states have (on average 8.222222222222221) internal successors, (222), 21 states have internal predecessors, (222), 6 states have call successors, (40), 4 states have call predecessors, (40), 11 states have return successors, (43), 12 states have call predecessors, (43), 6 states have call successors, (43) [2024-12-02 10:21:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:21:29,071 INFO L93 Difference]: Finished difference Result 64904 states and 82351 transitions. [2024-12-02 10:21:29,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-12-02 10:21:29,071 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.222222222222221) internal successors, (222), 21 states have internal predecessors, (222), 6 states have call successors, (40), 4 states have call predecessors, (40), 11 states have return successors, (43), 12 states have call predecessors, (43), 6 states have call successors, (43) Word has length 191 [2024-12-02 10:21:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:21:29,170 INFO L225 Difference]: With dead ends: 64904 [2024-12-02 10:21:29,170 INFO L226 Difference]: Without dead ends: 47758 [2024-12-02 10:21:29,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=903, Invalid=6237, Unknown=0, NotChecked=0, Total=7140 [2024-12-02 10:21:29,196 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 1716 mSDsluCounter, 6128 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 6519 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:21:29,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 6519 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 10:21:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47758 states. [2024-12-02 10:21:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47758 to 33819. [2024-12-02 10:21:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33819 states, 24952 states have (on average 1.288073100352677) internal successors, (32140), 25219 states have internal predecessors, (32140), 5639 states have call successors, (5639), 3227 states have call predecessors, (5639), 3227 states have return successors, (5639), 5372 states have call predecessors, (5639), 5639 states have call successors, (5639) [2024-12-02 10:21:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33819 states to 33819 states and 43418 transitions. [2024-12-02 10:21:36,357 INFO L78 Accepts]: Start accepts. Automaton has 33819 states and 43418 transitions. Word has length 191 [2024-12-02 10:21:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:21:36,358 INFO L471 AbstractCegarLoop]: Abstraction has 33819 states and 43418 transitions. [2024-12-02 10:21:36,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.222222222222221) internal successors, (222), 21 states have internal predecessors, (222), 6 states have call successors, (40), 4 states have call predecessors, (40), 11 states have return successors, (43), 12 states have call predecessors, (43), 6 states have call successors, (43) [2024-12-02 10:21:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 33819 states and 43418 transitions. [2024-12-02 10:21:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 10:21:36,361 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:21:36,362 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:21:36,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 10:21:36,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 10:21:36,562 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:21:36,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:21:36,562 INFO L85 PathProgramCache]: Analyzing trace with hash -171389862, now seen corresponding path program 1 times [2024-12-02 10:21:36,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:21:36,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927608337] [2024-12-02 10:21:36,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:36,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:21:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 10:21:37,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:21:37,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927608337] [2024-12-02 10:21:37,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927608337] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:21:37,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262724305] [2024-12-02 10:21:37,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:21:37,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:21:37,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:21:37,038 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:21:37,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:21:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:21:37,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 10:21:37,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:21:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 37 proven. 85 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 10:21:37,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:21:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-12-02 10:21:37,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262724305] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:21:37,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:21:37,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 26 [2024-12-02 10:21:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287594129] [2024-12-02 10:21:37,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:21:37,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 10:21:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:21:37,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 10:21:37,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2024-12-02 10:21:37,781 INFO L87 Difference]: Start difference. First operand 33819 states and 43418 transitions. Second operand has 26 states, 26 states have (on average 11.961538461538462) internal successors, (311), 24 states have internal predecessors, (311), 10 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (51), 12 states have call predecessors, (51), 10 states have call successors, (51) [2024-12-02 10:21:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:21:52,213 INFO L93 Difference]: Finished difference Result 80531 states and 103280 transitions. [2024-12-02 10:21:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-12-02 10:21:52,214 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.961538461538462) internal successors, (311), 24 states have internal predecessors, (311), 10 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (51), 12 states have call predecessors, (51), 10 states have call successors, (51) Word has length 192 [2024-12-02 10:21:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:21:52,321 INFO L225 Difference]: With dead ends: 80531 [2024-12-02 10:21:52,321 INFO L226 Difference]: Without dead ends: 46792 [2024-12-02 10:21:52,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1018, Invalid=5624, Unknown=0, NotChecked=0, Total=6642 [2024-12-02 10:21:52,363 INFO L435 NwaCegarLoop]: 614 mSDtfsCounter, 1364 mSDsluCounter, 7499 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 8113 SdHoareTripleChecker+Invalid, 4531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:21:52,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 8113 Invalid, 4531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 10:21:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46792 states. [2024-12-02 10:22:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46792 to 41902. [2024-12-02 10:22:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41902 states, 30823 states have (on average 1.2847548908282775) internal successors, (39600), 31160 states have internal predecessors, (39600), 7060 states have call successors, (7060), 4018 states have call predecessors, (7060), 4018 states have return successors, (7060), 6723 states have call predecessors, (7060), 7060 states have call successors, (7060) [2024-12-02 10:22:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41902 states to 41902 states and 53720 transitions. [2024-12-02 10:22:01,775 INFO L78 Accepts]: Start accepts. Automaton has 41902 states and 53720 transitions. Word has length 192 [2024-12-02 10:22:01,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:22:01,775 INFO L471 AbstractCegarLoop]: Abstraction has 41902 states and 53720 transitions. [2024-12-02 10:22:01,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.961538461538462) internal successors, (311), 24 states have internal predecessors, (311), 10 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (51), 12 states have call predecessors, (51), 10 states have call successors, (51) [2024-12-02 10:22:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 41902 states and 53720 transitions. [2024-12-02 10:22:01,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 10:22:01,779 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:22:01,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:01,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 10:22:01,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 10:22:01,980 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:22:01,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:22:01,980 INFO L85 PathProgramCache]: Analyzing trace with hash 259384864, now seen corresponding path program 1 times [2024-12-02 10:22:01,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:22:01,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276575864] [2024-12-02 10:22:01,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:22:01,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:22:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:22:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-12-02 10:22:02,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:22:02,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276575864] [2024-12-02 10:22:02,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276575864] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:22:02,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:22:02,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:22:02,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542980945] [2024-12-02 10:22:02,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:22:02,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:22:02,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:22:02,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:22:02,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:22:02,517 INFO L87 Difference]: Start difference. First operand 41902 states and 53720 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 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 10:22:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:22:12,205 INFO L93 Difference]: Finished difference Result 77158 states and 98883 transitions. [2024-12-02 10:22:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:22:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 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 193 [2024-12-02 10:22:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:22:12,314 INFO L225 Difference]: With dead ends: 77158 [2024-12-02 10:22:12,315 INFO L226 Difference]: Without dead ends: 42546 [2024-12-02 10:22:12,361 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 10:22:12,361 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 463 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:22:12,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1440 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:22:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42546 states. [2024-12-02 10:22:21,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42546 to 41868. [2024-12-02 10:22:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41868 states, 30789 states have (on average 1.2828607619604404) internal successors, (39498), 31126 states have internal predecessors, (39498), 7060 states have call successors, (7060), 4018 states have call predecessors, (7060), 4018 states have return successors, (7060), 6723 states have call predecessors, (7060), 7060 states have call successors, (7060) [2024-12-02 10:22:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41868 states to 41868 states and 53618 transitions. [2024-12-02 10:22:21,719 INFO L78 Accepts]: Start accepts. Automaton has 41868 states and 53618 transitions. Word has length 193 [2024-12-02 10:22:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:22:21,719 INFO L471 AbstractCegarLoop]: Abstraction has 41868 states and 53618 transitions. [2024-12-02 10:22:21,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 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 10:22:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 41868 states and 53618 transitions. [2024-12-02 10:22:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-12-02 10:22:21,723 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:22:21,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:21,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 10:22:21,723 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:22:21,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:22:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1901334443, now seen corresponding path program 1 times [2024-12-02 10:22:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:22:21,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675268574] [2024-12-02 10:22:21,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:22:21,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:22:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:22:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 10:22:22,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:22:22,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675268574] [2024-12-02 10:22:22,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675268574] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:22:22,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893239141] [2024-12-02 10:22:22,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:22:22,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:22:22,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:22:22,162 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:22:22,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 10:22:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:22:22,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 10:22:22,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:22:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 86 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 10:22:22,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:22:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 10:22:23,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893239141] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:22:23,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:22:23,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2024-12-02 10:22:23,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919926653] [2024-12-02 10:22:23,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:22:23,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 10:22:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:22:23,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 10:22:23,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2024-12-02 10:22:23,335 INFO L87 Difference]: Start difference. First operand 41868 states and 53618 transitions. Second operand has 29 states, 29 states have (on average 10.551724137931034) internal successors, (306), 28 states have internal predecessors, (306), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (49), 12 states have call predecessors, (49), 11 states have call successors, (49) [2024-12-02 10:22:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:22:34,325 INFO L93 Difference]: Finished difference Result 77382 states and 99136 transitions. [2024-12-02 10:22:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 10:22:34,326 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.551724137931034) internal successors, (306), 28 states have internal predecessors, (306), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (49), 12 states have call predecessors, (49), 11 states have call successors, (49) Word has length 194 [2024-12-02 10:22:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:22:34,448 INFO L225 Difference]: With dead ends: 77382 [2024-12-02 10:22:34,448 INFO L226 Difference]: Without dead ends: 42050 [2024-12-02 10:22:34,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=434, Invalid=2218, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 10:22:34,500 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 1099 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:22:34,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 3887 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 10:22:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42050 states. [2024-12-02 10:22:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42050 to 41654. [2024-12-02 10:22:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41654 states, 30640 states have (on average 1.2800587467362925) internal successors, (39221), 30976 states have internal predecessors, (39221), 7011 states have call successors, (7011), 4002 states have call predecessors, (7011), 4002 states have return successors, (7011), 6675 states have call predecessors, (7011), 7011 states have call successors, (7011) [2024-12-02 10:22:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41654 states to 41654 states and 53243 transitions. [2024-12-02 10:22:44,024 INFO L78 Accepts]: Start accepts. Automaton has 41654 states and 53243 transitions. Word has length 194 [2024-12-02 10:22:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:22:44,025 INFO L471 AbstractCegarLoop]: Abstraction has 41654 states and 53243 transitions. [2024-12-02 10:22:44,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.551724137931034) internal successors, (306), 28 states have internal predecessors, (306), 11 states have call successors, (49), 5 states have call predecessors, (49), 6 states have return successors, (49), 12 states have call predecessors, (49), 11 states have call successors, (49) [2024-12-02 10:22:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 41654 states and 53243 transitions. [2024-12-02 10:22:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-12-02 10:22:44,028 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:22:44,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:44,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 10:22:44,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:22:44,229 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:22:44,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:22:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1158341999, now seen corresponding path program 1 times [2024-12-02 10:22:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:22:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058470579] [2024-12-02 10:22:44,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:22:44,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:22:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:22:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-12-02 10:22:44,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:22:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058470579] [2024-12-02 10:22:44,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058470579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:22:44,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:22:44,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:22:44,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273200430] [2024-12-02 10:22:44,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:22:44,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:22:44,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:22:44,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:22:44,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:22:44,308 INFO L87 Difference]: Start difference. First operand 41654 states and 53243 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 10:22:54,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:22:54,282 INFO L93 Difference]: Finished difference Result 78828 states and 101041 transitions. [2024-12-02 10:22:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:22:54,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 195 [2024-12-02 10:22:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:22:54,406 INFO L225 Difference]: With dead ends: 78828 [2024-12-02 10:22:54,406 INFO L226 Difference]: Without dead ends: 46081 [2024-12-02 10:22:54,449 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 10:22:54,450 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 199 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1170 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 10:22:54,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1170 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:22:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46081 states. [2024-12-02 10:23:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46081 to 43109. [2024-12-02 10:23:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43109 states, 31686 states have (on average 1.2789875654863347) internal successors, (40526), 32038 states have internal predecessors, (40526), 7266 states have call successors, (7266), 4156 states have call predecessors, (7266), 4156 states have return successors, (7266), 6914 states have call predecessors, (7266), 7266 states have call successors, (7266) [2024-12-02 10:23:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43109 states to 43109 states and 55058 transitions. [2024-12-02 10:23:04,494 INFO L78 Accepts]: Start accepts. Automaton has 43109 states and 55058 transitions. Word has length 195 [2024-12-02 10:23:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:23:04,495 INFO L471 AbstractCegarLoop]: Abstraction has 43109 states and 55058 transitions. [2024-12-02 10:23:04,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 10:23:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 43109 states and 55058 transitions. [2024-12-02 10:23:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 10:23:04,499 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:23:04,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:04,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 10:23:04,499 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:23:04,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1064792552, now seen corresponding path program 1 times [2024-12-02 10:23:04,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:04,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273177478] [2024-12-02 10:23:04,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 10:23:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273177478] [2024-12-02 10:23:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273177478] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:23:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355367185] [2024-12-02 10:23:04,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:04,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:04,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:23:04,845 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:23:04,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 10:23:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:05,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 10:23:05,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:23:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 86 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 10:23:05,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:23:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 10:23:05,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355367185] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:23:05,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:23:05,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 17 [2024-12-02 10:23:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613607662] [2024-12-02 10:23:05,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:23:05,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:23:05,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:05,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:23:05,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:23:05,864 INFO L87 Difference]: Start difference. First operand 43109 states and 55058 transitions. Second operand has 17 states, 17 states have (on average 17.352941176470587) internal successors, (295), 17 states have internal predecessors, (295), 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 10:23:16,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:23:16,836 INFO L93 Difference]: Finished difference Result 82596 states and 105596 transitions. [2024-12-02 10:23:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 10:23:16,837 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.352941176470587) internal successors, (295), 17 states have internal predecessors, (295), 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 196 [2024-12-02 10:23:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:23:16,966 INFO L225 Difference]: With dead ends: 82596 [2024-12-02 10:23:16,966 INFO L226 Difference]: Without dead ends: 42688 [2024-12-02 10:23:17,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 10:23:17,018 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 1065 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:23:17,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1772 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 10:23:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42688 states. [2024-12-02 10:23:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42688 to 42433. [2024-12-02 10:23:27,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42433 states, 31231 states have (on average 1.2793698568729788) internal successors, (39956), 31573 states have internal predecessors, (39956), 7118 states have call successors, (7118), 4083 states have call predecessors, (7118), 4083 states have return successors, (7118), 6776 states have call predecessors, (7118), 7118 states have call successors, (7118) [2024-12-02 10:23:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42433 states to 42433 states and 54192 transitions. [2024-12-02 10:23:27,183 INFO L78 Accepts]: Start accepts. Automaton has 42433 states and 54192 transitions. Word has length 196 [2024-12-02 10:23:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:23:27,183 INFO L471 AbstractCegarLoop]: Abstraction has 42433 states and 54192 transitions. [2024-12-02 10:23:27,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.352941176470587) internal successors, (295), 17 states have internal predecessors, (295), 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 10:23:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 42433 states and 54192 transitions. [2024-12-02 10:23:27,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 10:23:27,186 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:23:27,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:27,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 10:23:27,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:27,387 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:23:27,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:27,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1414544453, now seen corresponding path program 1 times [2024-12-02 10:23:27,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:27,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993889013] [2024-12-02 10:23:27,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:27,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 10:23:27,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:27,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993889013] [2024-12-02 10:23:27,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993889013] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:23:27,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070687531] [2024-12-02 10:23:27,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:27,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:27,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:23:27,613 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:23:27,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 10:23:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:27,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:23:27,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:23:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 8 proven. 115 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:23:28,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:23:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 10:23:28,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070687531] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:23:28,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:23:28,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-12-02 10:23:28,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985865385] [2024-12-02 10:23:28,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:23:28,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 10:23:28,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:28,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 10:23:28,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:23:28,161 INFO L87 Difference]: Start difference. First operand 42433 states and 54192 transitions. Second operand has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 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 10:23:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:23:39,981 INFO L93 Difference]: Finished difference Result 92615 states and 117486 transitions. [2024-12-02 10:23:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 10:23:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 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 199 [2024-12-02 10:23:39,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:23:40,124 INFO L225 Difference]: With dead ends: 92615 [2024-12-02 10:23:40,125 INFO L226 Difference]: Without dead ends: 50920 [2024-12-02 10:23:40,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 394 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 10:23:40,175 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 304 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1984 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 10:23:40,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1984 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:23:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50920 states. [2024-12-02 10:23:50,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50920 to 45080. [2024-12-02 10:23:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45080 states, 33279 states have (on average 1.2681871450464257) internal successors, (42204), 33633 states have internal predecessors, (42204), 7407 states have call successors, (7407), 4393 states have call predecessors, (7407), 4393 states have return successors, (7407), 7053 states have call predecessors, (7407), 7407 states have call successors, (7407) [2024-12-02 10:23:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45080 states to 45080 states and 57018 transitions. [2024-12-02 10:23:51,107 INFO L78 Accepts]: Start accepts. Automaton has 45080 states and 57018 transitions. Word has length 199 [2024-12-02 10:23:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:23:51,107 INFO L471 AbstractCegarLoop]: Abstraction has 45080 states and 57018 transitions. [2024-12-02 10:23:51,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 9 states have internal predecessors, (174), 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 10:23:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 45080 states and 57018 transitions. [2024-12-02 10:23:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 10:23:51,110 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:23:51,111 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:51,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 10:23:51,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:51,311 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:23:51,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1772494017, now seen corresponding path program 1 times [2024-12-02 10:23:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456615723] [2024-12-02 10:23:51,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 10:23:51,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:51,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456615723] [2024-12-02 10:23:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456615723] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:51,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:23:51,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:23:51,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600428768] [2024-12-02 10:23:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:51,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:23:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:51,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:23:51,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:23:51,561 INFO L87 Difference]: Start difference. First operand 45080 states and 57018 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 10:24:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:24:10,067 INFO L93 Difference]: Finished difference Result 117572 states and 148931 transitions. [2024-12-02 10:24:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:24:10,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 202 [2024-12-02 10:24:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:24:10,277 INFO L225 Difference]: With dead ends: 117572 [2024-12-02 10:24:10,278 INFO L226 Difference]: Without dead ends: 76426 [2024-12-02 10:24:10,338 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 10:24:10,338 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 211 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:24:10,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 2073 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:24:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76426 states. [2024-12-02 10:24:27,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76426 to 67495. [2024-12-02 10:24:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67495 states, 49497 states have (on average 1.259793522839768) internal successors, (62356), 50024 states have internal predecessors, (62356), 11314 states have call successors, (11314), 6683 states have call predecessors, (11314), 6683 states have return successors, (11314), 10787 states have call predecessors, (11314), 11314 states have call successors, (11314) [2024-12-02 10:24:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67495 states to 67495 states and 84984 transitions. [2024-12-02 10:24:27,510 INFO L78 Accepts]: Start accepts. Automaton has 67495 states and 84984 transitions. Word has length 202 [2024-12-02 10:24:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:24:27,511 INFO L471 AbstractCegarLoop]: Abstraction has 67495 states and 84984 transitions. [2024-12-02 10:24:27,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 10:24:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 67495 states and 84984 transitions. [2024-12-02 10:24:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 10:24:27,515 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:24:27,515 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:27,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 10:24:27,516 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:24:27,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:27,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2089283266, now seen corresponding path program 1 times [2024-12-02 10:24:27,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:27,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972630864] [2024-12-02 10:24:27,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:27,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 10:24:27,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:27,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972630864] [2024-12-02 10:24:27,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972630864] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:24:27,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357826878] [2024-12-02 10:24:27,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:24:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:24:27,767 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:24:27,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 10:24:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:28,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 10:24:28,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:24:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 99 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 10:24:28,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:24:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 10:24:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357826878] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:24:28,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:24:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 17 [2024-12-02 10:24:28,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81896174] [2024-12-02 10:24:28,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:24:28,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:24:28,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:28,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:24:28,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:24:28,439 INFO L87 Difference]: Start difference. First operand 67495 states and 84984 transitions. Second operand has 17 states, 17 states have (on average 15.294117647058824) internal successors, (260), 17 states have internal predecessors, (260), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2024-12-02 10:24:48,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:24:48,663 INFO L93 Difference]: Finished difference Result 139558 states and 176228 transitions. [2024-12-02 10:24:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-12-02 10:24:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.294117647058824) internal successors, (260), 17 states have internal predecessors, (260), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) Word has length 203 [2024-12-02 10:24:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:24:48,885 INFO L225 Difference]: With dead ends: 139558 [2024-12-02 10:24:48,885 INFO L226 Difference]: Without dead ends: 73620 [2024-12-02 10:24:48,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=754, Invalid=3406, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 10:24:48,968 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 2720 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:24:48,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2720 Valid, 2952 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 10:24:49,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73620 states. [2024-12-02 10:25:06,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73620 to 67099. [2024-12-02 10:25:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67099 states, 49242 states have (on average 1.2632305755249584) internal successors, (62204), 49779 states have internal predecessors, (62204), 11270 states have call successors, (11270), 6586 states have call predecessors, (11270), 6586 states have return successors, (11270), 10733 states have call predecessors, (11270), 11270 states have call successors, (11270) [2024-12-02 10:25:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67099 states to 67099 states and 84744 transitions. [2024-12-02 10:25:06,316 INFO L78 Accepts]: Start accepts. Automaton has 67099 states and 84744 transitions. Word has length 203 [2024-12-02 10:25:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:06,316 INFO L471 AbstractCegarLoop]: Abstraction has 67099 states and 84744 transitions. [2024-12-02 10:25:06,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.294117647058824) internal successors, (260), 17 states have internal predecessors, (260), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2024-12-02 10:25:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 67099 states and 84744 transitions. [2024-12-02 10:25:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 10:25:06,320 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:06,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:06,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 10:25:06,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:06,520 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:06,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash -301360061, now seen corresponding path program 1 times [2024-12-02 10:25:06,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:06,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802274361] [2024-12-02 10:25:06,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:06,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 10:25:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802274361] [2024-12-02 10:25:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802274361] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294666518] [2024-12-02 10:25:07,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:07,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:07,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:07,008 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:07,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 10:25:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:07,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 10:25:07,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 39 proven. 89 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 10:25:07,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 10:25:07,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294666518] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:07,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:07,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-12-02 10:25:07,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736875763] [2024-12-02 10:25:07,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:07,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 10:25:07,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:07,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 10:25:07,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-12-02 10:25:07,758 INFO L87 Difference]: Start difference. First operand 67099 states and 84744 transitions. Second operand has 24 states, 24 states have (on average 13.416666666666666) internal successors, (322), 22 states have internal predecessors, (322), 9 states have call successors, (59), 4 states have call predecessors, (59), 7 states have return successors, (58), 11 states have call predecessors, (58), 9 states have call successors, (58) [2024-12-02 10:25:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:25:30,333 INFO L93 Difference]: Finished difference Result 134712 states and 169973 transitions. [2024-12-02 10:25:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-12-02 10:25:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.416666666666666) internal successors, (322), 22 states have internal predecessors, (322), 9 states have call successors, (59), 4 states have call predecessors, (59), 7 states have return successors, (58), 11 states have call predecessors, (58), 9 states have call successors, (58) Word has length 207 [2024-12-02 10:25:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:25:30,569 INFO L225 Difference]: With dead ends: 134712 [2024-12-02 10:25:30,569 INFO L226 Difference]: Without dead ends: 70372 [2024-12-02 10:25:30,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1155, Invalid=6855, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 10:25:30,652 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 2680 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:25:30,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2680 Valid, 5641 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 10:25:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70372 states. [2024-12-02 10:25:47,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70372 to 62006. [2024-12-02 10:25:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62006 states, 45618 states have (on average 1.2570695777982375) internal successors, (57345), 46124 states have internal predecessors, (57345), 10291 states have call successors, (10291), 6096 states have call predecessors, (10291), 6096 states have return successors, (10291), 9785 states have call predecessors, (10291), 10291 states have call successors, (10291) [2024-12-02 10:25:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62006 states to 62006 states and 77927 transitions. [2024-12-02 10:25:47,460 INFO L78 Accepts]: Start accepts. Automaton has 62006 states and 77927 transitions. Word has length 207 [2024-12-02 10:25:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:25:47,460 INFO L471 AbstractCegarLoop]: Abstraction has 62006 states and 77927 transitions. [2024-12-02 10:25:47,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.416666666666666) internal successors, (322), 22 states have internal predecessors, (322), 9 states have call successors, (59), 4 states have call predecessors, (59), 7 states have return successors, (58), 11 states have call predecessors, (58), 9 states have call successors, (58) [2024-12-02 10:25:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 62006 states and 77927 transitions. [2024-12-02 10:25:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-12-02 10:25:47,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:47,464 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 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, 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 10:25:47,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 10:25:47,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 10:25:47,664 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:47,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1173951056, now seen corresponding path program 1 times [2024-12-02 10:25:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:47,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891747088] [2024-12-02 10:25:47,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 10:25:48,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:48,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891747088] [2024-12-02 10:25:48,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891747088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:48,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008036875] [2024-12-02 10:25:48,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:48,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:48,103 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:48,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 10:25:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:48,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 10:25:48,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-12-02 10:25:48,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 10:25:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008036875] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:49,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:49,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 19 [2024-12-02 10:25:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004139045] [2024-12-02 10:25:49,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:49,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 10:25:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:49,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 10:25:49,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-12-02 10:25:49,140 INFO L87 Difference]: Start difference. First operand 62006 states and 77927 transitions. Second operand has 19 states, 19 states have (on average 13.421052631578947) internal successors, (255), 19 states have internal predecessors, (255), 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 10:26:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:26:07,799 INFO L93 Difference]: Finished difference Result 126562 states and 159573 transitions. [2024-12-02 10:26:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 10:26:07,800 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.421052631578947) internal successors, (255), 19 states have internal predecessors, (255), 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 211 [2024-12-02 10:26:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:26:08,018 INFO L225 Difference]: With dead ends: 126562 [2024-12-02 10:26:08,018 INFO L226 Difference]: Without dead ends: 66439 [2024-12-02 10:26:08,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=291, Invalid=969, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 10:26:08,091 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 1615 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:26:08,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 2381 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 10:26:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66439 states. [2024-12-02 10:26:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66439 to 65499. [2024-12-02 10:26:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65499 states, 48099 states have (on average 1.2589866733196116) internal successors, (60556), 48648 states have internal predecessors, (60556), 10956 states have call successors, (10956), 6443 states have call predecessors, (10956), 6443 states have return successors, (10956), 10407 states have call predecessors, (10956), 10956 states have call successors, (10956) [2024-12-02 10:26:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65499 states to 65499 states and 82468 transitions. [2024-12-02 10:26:25,598 INFO L78 Accepts]: Start accepts. Automaton has 65499 states and 82468 transitions. Word has length 211 [2024-12-02 10:26:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:26:25,598 INFO L471 AbstractCegarLoop]: Abstraction has 65499 states and 82468 transitions. [2024-12-02 10:26:25,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.421052631578947) internal successors, (255), 19 states have internal predecessors, (255), 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 10:26:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 65499 states and 82468 transitions. [2024-12-02 10:26:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-12-02 10:26:25,601 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:26:25,602 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 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, 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 10:26:25,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 10:26:25,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 10:26:25,802 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:26:25,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:25,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1639295813, now seen corresponding path program 1 times [2024-12-02 10:26:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:26:25,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628277461] [2024-12-02 10:26:25,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:25,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 10:26:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:26:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628277461] [2024-12-02 10:26:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628277461] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:26:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662811985] [2024-12-02 10:26:26,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:26,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:26,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:26,552 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:26,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 10:26:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:26,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 10:26:26,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 136 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-12-02 10:26:27,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:26:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 10:26:27,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662811985] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:26:27,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:26:27,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2024-12-02 10:26:27,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64931857] [2024-12-02 10:26:27,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:26:27,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 10:26:27,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:27,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 10:26:27,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:26:27,345 INFO L87 Difference]: Start difference. First operand 65499 states and 82468 transitions. Second operand has 22 states, 22 states have (on average 12.227272727272727) internal successors, (269), 22 states have internal predecessors, (269), 10 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) [2024-12-02 10:26:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:26:49,075 INFO L93 Difference]: Finished difference Result 140467 states and 177677 transitions. [2024-12-02 10:26:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 10:26:49,076 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.227272727272727) internal successors, (269), 22 states have internal predecessors, (269), 10 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) Word has length 212 [2024-12-02 10:26:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:26:49,373 INFO L225 Difference]: With dead ends: 140467 [2024-12-02 10:26:49,373 INFO L226 Difference]: Without dead ends: 77854 [2024-12-02 10:26:49,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=832, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 10:26:49,489 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 1372 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:26:49,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 2445 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 10:26:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77854 states. [2024-12-02 10:27:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77854 to 76120. [2024-12-02 10:27:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76120 states, 55781 states have (on average 1.2610745594378014) internal successors, (70344), 56421 states have internal predecessors, (70344), 12840 states have call successors, (12840), 7498 states have call predecessors, (12840), 7498 states have return successors, (12840), 12200 states have call predecessors, (12840), 12840 states have call successors, (12840) [2024-12-02 10:27:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76120 states to 76120 states and 96024 transitions. [2024-12-02 10:27:09,685 INFO L78 Accepts]: Start accepts. Automaton has 76120 states and 96024 transitions. Word has length 212 [2024-12-02 10:27:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:27:09,685 INFO L471 AbstractCegarLoop]: Abstraction has 76120 states and 96024 transitions. [2024-12-02 10:27:09,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.227272727272727) internal successors, (269), 22 states have internal predecessors, (269), 10 states have call successors, (57), 6 states have call predecessors, (57), 6 states have return successors, (56), 9 states have call predecessors, (56), 9 states have call successors, (56) [2024-12-02 10:27:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 76120 states and 96024 transitions. [2024-12-02 10:27:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-12-02 10:27:09,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:27:09,689 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:09,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 10:27:09,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 10:27:09,889 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:27:09,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1740177431, now seen corresponding path program 1 times [2024-12-02 10:27:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:27:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911977379] [2024-12-02 10:27:09,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:27:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-12-02 10:27:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:27:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911977379] [2024-12-02 10:27:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911977379] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:10,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:10,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:27:10,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192568036] [2024-12-02 10:27:10,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:10,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:27:10,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:27:10,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:27:10,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:27:10,362 INFO L87 Difference]: Start difference. First operand 76120 states and 96024 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 10:27:31,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:27:31,841 INFO L93 Difference]: Finished difference Result 145313 states and 183617 transitions. [2024-12-02 10:27:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:27:31,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 212 [2024-12-02 10:27:31,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:27:32,120 INFO L225 Difference]: With dead ends: 145313 [2024-12-02 10:27:32,120 INFO L226 Difference]: Without dead ends: 76919 [2024-12-02 10:27:32,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:27:32,210 INFO L435 NwaCegarLoop]: 410 mSDtfsCounter, 381 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:27:32,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1717 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:27:32,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76919 states. [2024-12-02 10:27:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76919 to 75749. [2024-12-02 10:27:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75749 states, 55506 states have (on average 1.2599538788599431) internal successors, (69935), 56138 states have internal predecessors, (69935), 12784 states have call successors, (12784), 7458 states have call predecessors, (12784), 7458 states have return successors, (12784), 12152 states have call predecessors, (12784), 12784 states have call successors, (12784) [2024-12-02 10:27:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75749 states to 75749 states and 95503 transitions. [2024-12-02 10:27:53,522 INFO L78 Accepts]: Start accepts. Automaton has 75749 states and 95503 transitions. Word has length 212 [2024-12-02 10:27:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:27:53,522 INFO L471 AbstractCegarLoop]: Abstraction has 75749 states and 95503 transitions. [2024-12-02 10:27:53,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 10:27:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 75749 states and 95503 transitions. [2024-12-02 10:27:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-12-02 10:27:53,526 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:27:53,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:53,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-12-02 10:27:53,526 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:27:53,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash -433387316, now seen corresponding path program 1 times [2024-12-02 10:27:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:27:53,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157526056] [2024-12-02 10:27:53,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:53,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:27:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 10:27:54,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:27:54,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157526056] [2024-12-02 10:27:54,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157526056] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:27:54,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095929784] [2024-12-02 10:27:54,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:54,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:54,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:54,365 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:54,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 10:27:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:54,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 10:27:54,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 120 proven. 43 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 10:27:54,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:27:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 10:27:55,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095929784] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:27:55,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:27:55,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 11] total 28 [2024-12-02 10:27:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218725308] [2024-12-02 10:27:55,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:27:55,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 10:27:55,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:27:55,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 10:27:55,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-12-02 10:27:55,251 INFO L87 Difference]: Start difference. First operand 75749 states and 95503 transitions. Second operand has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 23 states have internal predecessors, (258), 7 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (41), 12 states have call predecessors, (41), 7 states have call successors, (41) [2024-12-02 10:28:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:28:26,014 INFO L93 Difference]: Finished difference Result 167581 states and 209834 transitions. [2024-12-02 10:28:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-12-02 10:28:26,015 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 23 states have internal predecessors, (258), 7 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (41), 12 states have call predecessors, (41), 7 states have call successors, (41) Word has length 215 [2024-12-02 10:28:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:28:26,345 INFO L225 Difference]: With dead ends: 167581 [2024-12-02 10:28:26,345 INFO L226 Difference]: Without dead ends: 99562 [2024-12-02 10:28:26,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=496, Invalid=3926, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 10:28:26,445 INFO L435 NwaCegarLoop]: 625 mSDtfsCounter, 812 mSDsluCounter, 8901 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 9526 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:28:26,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 9526 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2974 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 10:28:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99562 states. [2024-12-02 10:28:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99562 to 80029. [2024-12-02 10:28:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80029 states, 58745 states have (on average 1.2587113796918887) internal successors, (73943), 59405 states have internal predecessors, (73943), 13333 states have call successors, (13333), 7950 states have call predecessors, (13333), 7950 states have return successors, (13333), 12673 states have call predecessors, (13333), 13333 states have call successors, (13333) [2024-12-02 10:28:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80029 states to 80029 states and 100609 transitions. [2024-12-02 10:28:49,002 INFO L78 Accepts]: Start accepts. Automaton has 80029 states and 100609 transitions. Word has length 215 [2024-12-02 10:28:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:28:49,003 INFO L471 AbstractCegarLoop]: Abstraction has 80029 states and 100609 transitions. [2024-12-02 10:28:49,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 23 states have internal predecessors, (258), 7 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (41), 12 states have call predecessors, (41), 7 states have call successors, (41) [2024-12-02 10:28:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 80029 states and 100609 transitions. [2024-12-02 10:28:49,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 10:28:49,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:28:49,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:49,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-12-02 10:28:49,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:28:49,207 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:28:49,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:28:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash 682107359, now seen corresponding path program 1 times [2024-12-02 10:28:49,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:28:49,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286470704] [2024-12-02 10:28:49,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:28:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:28:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:28:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 10:28:49,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:28:49,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286470704] [2024-12-02 10:28:49,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286470704] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:28:49,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930713640] [2024-12-02 10:28:49,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:28:49,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:28:49,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:28:49,657 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:28:49,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 10:28:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:28:49,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 10:28:49,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:28:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 130 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 10:28:50,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:28:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 10:28:50,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930713640] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:28:50,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:28:50,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 18 [2024-12-02 10:28:50,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718272071] [2024-12-02 10:28:50,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:28:50,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 10:28:50,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:28:50,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 10:28:50,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:28:50,498 INFO L87 Difference]: Start difference. First operand 80029 states and 100609 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, (42), 6 states have call predecessors, (42), 6 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2024-12-02 10:29:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:29:18,578 INFO L93 Difference]: Finished difference Result 165536 states and 208988 transitions. [2024-12-02 10:29:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 10:29:18,579 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, (42), 6 states have call predecessors, (42), 6 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) Word has length 219 [2024-12-02 10:29:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:29:18,953 INFO L225 Difference]: With dead ends: 165536 [2024-12-02 10:29:18,953 INFO L226 Difference]: Without dead ends: 93719 [2024-12-02 10:29:19,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2024-12-02 10:29:19,070 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 1169 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:29:19,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 3252 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 10:29:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93719 states. [2024-12-02 10:29:48,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93719 to 92529. [2024-12-02 10:29:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92529 states, 67927 states have (on average 1.2599113754471711) internal successors, (85582), 68692 states have internal predecessors, (85582), 15420 states have call successors, (15420), 9181 states have call predecessors, (15420), 9181 states have return successors, (15420), 14655 states have call predecessors, (15420), 15420 states have call successors, (15420) [2024-12-02 10:29:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92529 states to 92529 states and 116422 transitions. [2024-12-02 10:29:48,597 INFO L78 Accepts]: Start accepts. Automaton has 92529 states and 116422 transitions. Word has length 219 [2024-12-02 10:29:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:29:48,597 INFO L471 AbstractCegarLoop]: Abstraction has 92529 states and 116422 transitions. [2024-12-02 10:29:48,597 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, (42), 6 states have call predecessors, (42), 6 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2024-12-02 10:29:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 92529 states and 116422 transitions. [2024-12-02 10:29:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-12-02 10:29:48,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:29:48,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:48,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 10:29:48,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:29:48,803 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:29:48,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:29:48,804 INFO L85 PathProgramCache]: Analyzing trace with hash -82977731, now seen corresponding path program 1 times [2024-12-02 10:29:48,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:29:48,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863424364] [2024-12-02 10:29:48,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:29:48,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:29:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 10:29:49,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:29:49,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863424364] [2024-12-02 10:29:49,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863424364] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:29:49,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793373092] [2024-12-02 10:29:49,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:29:49,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:29:49,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:29:49,313 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:29:49,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 10:29:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:29:49,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 10:29:49,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:29:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 115 proven. 19 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 10:29:49,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:29:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 31 proven. 13 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 10:29:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793373092] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:29:50,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:29:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 23 [2024-12-02 10:29:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052595651] [2024-12-02 10:29:50,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:29:50,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 10:29:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:29:50,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 10:29:50,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-12-02 10:29:50,225 INFO L87 Difference]: Start difference. First operand 92529 states and 116422 transitions. Second operand has 23 states, 23 states have (on average 13.0) internal successors, (299), 22 states have internal predecessors, (299), 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 10:30:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:30:19,771 INFO L93 Difference]: Finished difference Result 178251 states and 224865 transitions. [2024-12-02 10:30:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 10:30:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.0) internal successors, (299), 22 states have internal predecessors, (299), 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 222 [2024-12-02 10:30:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:30:20,185 INFO L225 Difference]: With dead ends: 178251 [2024-12-02 10:30:20,185 INFO L226 Difference]: Without dead ends: 93326 [2024-12-02 10:30:20,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=313, Invalid=1409, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 10:30:20,323 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 582 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:30:20,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 4037 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 10:30:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93326 states. [2024-12-02 10:30:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93326 to 92585. [2024-12-02 10:30:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92585 states, 67983 states have (on average 1.2592707000279482) internal successors, (85609), 68748 states have internal predecessors, (85609), 15420 states have call successors, (15420), 9181 states have call predecessors, (15420), 9181 states have return successors, (15420), 14655 states have call predecessors, (15420), 15420 states have call successors, (15420) [2024-12-02 10:30:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92585 states to 92585 states and 116449 transitions. [2024-12-02 10:30:48,619 INFO L78 Accepts]: Start accepts. Automaton has 92585 states and 116449 transitions. Word has length 222 [2024-12-02 10:30:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:30:48,619 INFO L471 AbstractCegarLoop]: Abstraction has 92585 states and 116449 transitions. [2024-12-02 10:30:48,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.0) internal successors, (299), 22 states have internal predecessors, (299), 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 10:30:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 92585 states and 116449 transitions. [2024-12-02 10:30:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-12-02 10:30:48,624 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:30:48,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:48,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-12-02 10:30:48,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:48,825 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:30:48,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:30:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash 870962427, now seen corresponding path program 1 times [2024-12-02 10:30:48,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:30:48,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950542568] [2024-12-02 10:30:48,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:30:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:30:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:30:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 10:30:49,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:30:49,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950542568] [2024-12-02 10:30:49,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950542568] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:30:49,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535373843] [2024-12-02 10:30:49,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:30:49,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:30:49,297 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:30:49,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 10:30:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:30:49,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 10:30:49,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:30:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 81 proven. 53 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 10:30:51,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:30:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 10:30:51,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535373843] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:30:51,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:30:51,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2024-12-02 10:30:51,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309104907] [2024-12-02 10:30:51,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:30:51,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 10:30:51,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:30:51,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 10:30:51,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 10:30:51,627 INFO L87 Difference]: Start difference. First operand 92585 states and 116449 transitions. Second operand has 36 states, 36 states have (on average 10.444444444444445) internal successors, (376), 34 states have internal predecessors, (376), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (55), 15 states have call predecessors, (55), 13 states have call successors, (55) [2024-12-02 10:31:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:31:28,894 INFO L93 Difference]: Finished difference Result 185300 states and 233664 transitions. [2024-12-02 10:31:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 10:31:28,895 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.444444444444445) internal successors, (376), 34 states have internal predecessors, (376), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (55), 15 states have call predecessors, (55), 13 states have call successors, (55) Word has length 222 [2024-12-02 10:31:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:31:29,377 INFO L225 Difference]: With dead ends: 185300 [2024-12-02 10:31:29,377 INFO L226 Difference]: Without dead ends: 100621 [2024-12-02 10:31:29,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=709, Invalid=3581, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 10:31:29,518 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 1480 mSDsluCounter, 6171 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 6666 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:31:29,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 6666 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 10:31:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100621 states. [2024-12-02 10:32:07,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100621 to 96786. [2024-12-02 10:32:07,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96786 states, 71097 states have (on average 1.2586044418189235) internal successors, (89483), 71899 states have internal predecessors, (89483), 16083 states have call successors, (16083), 9605 states have call predecessors, (16083), 9605 states have return successors, (16083), 15281 states have call predecessors, (16083), 16083 states have call successors, (16083) [2024-12-02 10:32:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96786 states to 96786 states and 121649 transitions. [2024-12-02 10:32:07,695 INFO L78 Accepts]: Start accepts. Automaton has 96786 states and 121649 transitions. Word has length 222 [2024-12-02 10:32:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:32:07,695 INFO L471 AbstractCegarLoop]: Abstraction has 96786 states and 121649 transitions. [2024-12-02 10:32:07,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.444444444444445) internal successors, (376), 34 states have internal predecessors, (376), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (55), 15 states have call predecessors, (55), 13 states have call successors, (55) [2024-12-02 10:32:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 96786 states and 121649 transitions. [2024-12-02 10:32:07,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 10:32:07,722 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:32:07,722 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, 2, 2, 2, 2, 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 10:32:07,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-12-02 10:32:07,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-12-02 10:32:07,923 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:32:07,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:07,923 INFO L85 PathProgramCache]: Analyzing trace with hash 531576313, now seen corresponding path program 1 times [2024-12-02 10:32:07,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:32:07,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910307492] [2024-12-02 10:32:07,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:07,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:32:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 66 proven. 31 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-12-02 10:32:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:32:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910307492] [2024-12-02 10:32:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910307492] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:32:08,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789235355] [2024-12-02 10:32:08,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:08,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:32:08,352 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:32:08,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d492df7-9d5f-4102-9f8f-9b8ead67599d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 10:32:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:08,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 10:32:08,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:32:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 127 proven. 153 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 10:32:09,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:32:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 65 proven. 32 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-12-02 10:32:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789235355] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:32:09,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:32:09,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 21 [2024-12-02 10:32:09,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965811364] [2024-12-02 10:32:09,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:32:09,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 10:32:09,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:32:09,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 10:32:09,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-12-02 10:32:09,578 INFO L87 Difference]: Start difference. First operand 96786 states and 121649 transitions. Second operand has 21 states, 21 states have (on average 17.80952380952381) internal successors, (374), 21 states have internal predecessors, (374), 11 states have call successors, (61), 6 states have call predecessors, (61), 7 states have return successors, (60), 11 states have call predecessors, (60), 11 states have call successors, (60) [2024-12-02 10:32:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:32:45,324 INFO L93 Difference]: Finished difference Result 188802 states and 237868 transitions. [2024-12-02 10:32:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 10:32:45,325 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 17.80952380952381) internal successors, (374), 21 states have internal predecessors, (374), 11 states have call successors, (61), 6 states have call predecessors, (61), 7 states have return successors, (60), 11 states have call predecessors, (60), 11 states have call successors, (60) Word has length 265 [2024-12-02 10:32:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted.