./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/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_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/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_da71058e-695f-441e-8cb8-5c5d84e087ef/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 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:30:49,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:30:49,171 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:30:49,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:30:49,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:30:49,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:30:49,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:30:49,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:30:49,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:30:49,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:30:49,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:30:49,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:30:49,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:30:49,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:30:49,200 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:30:49,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:30:49,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:30:49,201 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:30:49,202 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:30:49,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:30:49,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:30:49,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:30:49,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:49,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:49,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:30:49,203 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:30:49,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:30:49,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:30:49,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:30:49,204 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_da71058e-695f-441e-8cb8-5c5d84e087ef/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 -> 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 [2024-12-02 06:30:49,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:30:49,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:30:49,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:30:49,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:30:49,465 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:30:49,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2024-12-02 06:30:52,180 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/data/a302cbf5e/c0c3a09967754e72a81ceff19d28554c/FLAGb4b8e957b [2024-12-02 06:30:52,402 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:30:52,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2024-12-02 06:30:52,413 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/data/a302cbf5e/c0c3a09967754e72a81ceff19d28554c/FLAGb4b8e957b [2024-12-02 06:30:52,757 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/data/a302cbf5e/c0c3a09967754e72a81ceff19d28554c [2024-12-02 06:30:52,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:30:52,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:30:52,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:30:52,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:30:52,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:30:52,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:30:52" (1/1) ... [2024-12-02 06:30:52,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63768432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:52, skipping insertion in model container [2024-12-02 06:30:52,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:30:52" (1/1) ... [2024-12-02 06:30:52,791 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:30:53,012 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_da71058e-695f-441e-8cb8-5c5d84e087ef/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2024-12-02 06:30:53,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:30:53,025 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:30:53,078 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_da71058e-695f-441e-8cb8-5c5d84e087ef/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2024-12-02 06:30:53,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:30:53,095 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:30:53,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53 WrapperNode [2024-12-02 06:30:53,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:30:53,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:30:53,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:30:53,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:30:53,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,141 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 428 [2024-12-02 06:30:53,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:30:53,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:30:53,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:30:53,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:30:53,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,155 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,175 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:30:53,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,185 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:30:53,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:30:53,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:30:53,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:30:53,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (1/1) ... [2024-12-02 06:30:53,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:30:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:53,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:30:53,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:30:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:30:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2024-12-02 06:30:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2024-12-02 06:30:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-12-02 06:30:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-12-02 06:30:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2024-12-02 06:30:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2024-12-02 06:30:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2024-12-02 06:30:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2024-12-02 06:30:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2024-12-02 06:30:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2024-12-02 06:30:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:30:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:30:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:30:53,360 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:30:53,362 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:30:53,882 INFO L? ?]: Removed 106 outVars from TransFormulas that were not future-live. [2024-12-02 06:30:53,882 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:30:53,895 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:30:53,895 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:30:53,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:30:53 BoogieIcfgContainer [2024-12-02 06:30:53,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:30:53,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:30:53,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:30:53,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:30:53,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:30:52" (1/3) ... [2024-12-02 06:30:53,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0fcace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:30:53, skipping insertion in model container [2024-12-02 06:30:53,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:30:53" (2/3) ... [2024-12-02 06:30:53,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0fcace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:30:53, skipping insertion in model container [2024-12-02 06:30:53,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:30:53" (3/3) ... [2024-12-02 06:30:53,906 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2024-12-02 06:30:53,921 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:30:53,923 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c that has 6 procedures, 177 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-12-02 06:30:53,991 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:30:54,003 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;@4b5dc965, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:30:54,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:30:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 138 states have (on average 1.6014492753623188) internal successors, (221), 142 states have internal predecessors, (221), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 06:30:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-02 06:30:54,015 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:54,015 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:54,016 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:54,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1823063889, now seen corresponding path program 1 times [2024-12-02 06:30:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:54,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652182708] [2024-12-02 06:30:54,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:54,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652182708] [2024-12-02 06:30:54,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652182708] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:54,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:54,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:54,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177525229] [2024-12-02 06:30:54,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:54,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:54,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:54,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:54,333 INFO L87 Difference]: Start difference. First operand has 177 states, 138 states have (on average 1.6014492753623188) internal successors, (221), 142 states have internal predecessors, (221), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:54,434 INFO L93 Difference]: Finished difference Result 357 states and 606 transitions. [2024-12-02 06:30:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-12-02 06:30:54,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:54,444 INFO L225 Difference]: With dead ends: 357 [2024-12-02 06:30:54,444 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 06:30:54,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:54,451 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 7 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:54,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 803 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:54,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 06:30:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-12-02 06:30:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 140 states have (on average 1.542857142857143) internal successors, (216), 143 states have internal predecessors, (216), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 06:30:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 280 transitions. [2024-12-02 06:30:54,497 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 280 transitions. Word has length 15 [2024-12-02 06:30:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:54,498 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 280 transitions. [2024-12-02 06:30:54,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:54,498 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 280 transitions. [2024-12-02 06:30:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-02 06:30:54,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:54,500 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:54,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:30:54,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:54,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:54,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2051282424, now seen corresponding path program 1 times [2024-12-02 06:30:54,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:54,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819288050] [2024-12-02 06:30:54,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:54,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:54,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:54,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819288050] [2024-12-02 06:30:54,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819288050] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:54,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:54,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:54,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715796431] [2024-12-02 06:30:54,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:54,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:54,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:54,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:54,600 INFO L87 Difference]: Start difference. First operand 179 states and 280 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:54,663 INFO L93 Difference]: Finished difference Result 371 states and 583 transitions. [2024-12-02 06:30:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:30:54,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-12-02 06:30:54,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:54,666 INFO L225 Difference]: With dead ends: 371 [2024-12-02 06:30:54,666 INFO L226 Difference]: Without dead ends: 195 [2024-12-02 06:30:54,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:54,668 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 25 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:54,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 807 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-12-02 06:30:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2024-12-02 06:30:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 151 states have (on average 1.5231788079470199) internal successors, (230), 154 states have internal predecessors, (230), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-12-02 06:30:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 296 transitions. [2024-12-02 06:30:54,688 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 296 transitions. Word has length 16 [2024-12-02 06:30:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:54,688 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 296 transitions. [2024-12-02 06:30:54,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 296 transitions. [2024-12-02 06:30:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 06:30:54,690 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:54,690 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:54,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:30:54,690 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:54,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1169667981, now seen corresponding path program 1 times [2024-12-02 06:30:54,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:54,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403216799] [2024-12-02 06:30:54,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:54,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:54,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403216799] [2024-12-02 06:30:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403216799] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:54,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:54,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:30:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754763072] [2024-12-02 06:30:54,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:54,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:30:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:54,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:30:54,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:30:54,786 INFO L87 Difference]: Start difference. First operand 192 states and 296 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 06:30:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:54,810 INFO L93 Difference]: Finished difference Result 403 states and 629 transitions. [2024-12-02 06:30:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:30:54,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-12-02 06:30:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:54,813 INFO L225 Difference]: With dead ends: 403 [2024-12-02 06:30:54,813 INFO L226 Difference]: Without dead ends: 221 [2024-12-02 06:30:54,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:30:54,814 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 22 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:54,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 542 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-12-02 06:30:54,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2024-12-02 06:30:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 153 states have (on average 1.5163398692810457) internal successors, (232), 156 states have internal predecessors, (232), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-12-02 06:30:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 298 transitions. [2024-12-02 06:30:54,833 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 298 transitions. Word has length 24 [2024-12-02 06:30:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:54,834 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 298 transitions. [2024-12-02 06:30:54,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 06:30:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 298 transitions. [2024-12-02 06:30:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-02 06:30:54,835 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:54,836 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:54,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:30:54,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:54,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash 277935782, now seen corresponding path program 1 times [2024-12-02 06:30:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305108432] [2024-12-02 06:30:54,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:54,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:54,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305108432] [2024-12-02 06:30:54,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305108432] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:54,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:54,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:30:54,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343126090] [2024-12-02 06:30:54,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:54,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:30:54,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:54,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:30:54,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:54,936 INFO L87 Difference]: Start difference. First operand 194 states and 298 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:54,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:54,979 INFO L93 Difference]: Finished difference Result 378 states and 585 transitions. [2024-12-02 06:30:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:30:54,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-12-02 06:30:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:54,982 INFO L225 Difference]: With dead ends: 378 [2024-12-02 06:30:54,982 INFO L226 Difference]: Without dead ends: 200 [2024-12-02 06:30:54,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:54,983 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:54,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1078 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:54,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-12-02 06:30:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2024-12-02 06:30:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 156 states have (on average 1.5064102564102564) internal successors, (235), 159 states have internal predecessors, (235), 33 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2024-12-02 06:30:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 302 transitions. [2024-12-02 06:30:54,998 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 302 transitions. Word has length 32 [2024-12-02 06:30:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:54,998 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 302 transitions. [2024-12-02 06:30:54,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 302 transitions. [2024-12-02 06:30:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-02 06:30:55,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:55,000 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] [2024-12-02 06:30:55,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:30:55,000 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:55,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 111176602, now seen corresponding path program 1 times [2024-12-02 06:30:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:55,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917842817] [2024-12-02 06:30:55,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:55,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:55,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917842817] [2024-12-02 06:30:55,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917842817] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:55,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:55,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:55,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245529458] [2024-12-02 06:30:55,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:55,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:55,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:55,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:55,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:55,081 INFO L87 Difference]: Start difference. First operand 198 states and 302 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:55,129 INFO L93 Difference]: Finished difference Result 440 states and 691 transitions. [2024-12-02 06:30:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:55,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-12-02 06:30:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:55,132 INFO L225 Difference]: With dead ends: 440 [2024-12-02 06:30:55,132 INFO L226 Difference]: Without dead ends: 293 [2024-12-02 06:30:55,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:55,134 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 122 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:55,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 801 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-12-02 06:30:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 194. [2024-12-02 06:30:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 153 states have (on average 1.4836601307189543) internal successors, (227), 156 states have internal predecessors, (227), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-12-02 06:30:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 293 transitions. [2024-12-02 06:30:55,150 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 293 transitions. Word has length 32 [2024-12-02 06:30:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:55,150 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 293 transitions. [2024-12-02 06:30:55,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 293 transitions. [2024-12-02 06:30:55,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 06:30:55,151 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:55,151 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:55,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:30:55,152 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:55,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1836290998, now seen corresponding path program 1 times [2024-12-02 06:30:55,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:55,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144154587] [2024-12-02 06:30:55,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:55,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:55,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:55,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144154587] [2024-12-02 06:30:55,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144154587] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:55,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479310154] [2024-12-02 06:30:55,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:55,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:55,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:55,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:55,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:30:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:55,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:30:55,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:55,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:30:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479310154] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:30:55,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:30:55,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-12-02 06:30:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680361336] [2024-12-02 06:30:55,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:30:55,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:30:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:55,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:30:55,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:30:55,478 INFO L87 Difference]: Start difference. First operand 194 states and 293 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 06:30:55,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:55,534 INFO L93 Difference]: Finished difference Result 436 states and 673 transitions. [2024-12-02 06:30:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:30:55,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-12-02 06:30:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:55,538 INFO L225 Difference]: With dead ends: 436 [2024-12-02 06:30:55,538 INFO L226 Difference]: Without dead ends: 253 [2024-12-02 06:30:55,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:30:55,540 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 76 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:55,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1036 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-12-02 06:30:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2024-12-02 06:30:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 199 states have internal predecessors, (286), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-12-02 06:30:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 372 transitions. [2024-12-02 06:30:55,558 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 372 transitions. Word has length 35 [2024-12-02 06:30:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:55,558 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 372 transitions. [2024-12-02 06:30:55,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 06:30:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 372 transitions. [2024-12-02 06:30:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 06:30:55,559 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:55,560 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:55,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:30:55,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:55,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:55,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:55,761 INFO L85 PathProgramCache]: Analyzing trace with hash 209052842, now seen corresponding path program 2 times [2024-12-02 06:30:55,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:55,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888868942] [2024-12-02 06:30:55,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:30:55,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:55,786 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 06:30:55,786 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:30:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-12-02 06:30:55,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:55,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888868942] [2024-12-02 06:30:55,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888868942] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:55,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:55,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:55,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215945129] [2024-12-02 06:30:55,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:55,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:55,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:55,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:55,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:55,832 INFO L87 Difference]: Start difference. First operand 247 states and 372 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:55,892 INFO L93 Difference]: Finished difference Result 463 states and 722 transitions. [2024-12-02 06:30:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-12-02 06:30:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:55,895 INFO L225 Difference]: With dead ends: 463 [2024-12-02 06:30:55,895 INFO L226 Difference]: Without dead ends: 245 [2024-12-02 06:30:55,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:55,897 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 7 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:55,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 744 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-12-02 06:30:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-12-02 06:30:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 195 states have (on average 1.4564102564102563) internal successors, (284), 198 states have internal predecessors, (284), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-12-02 06:30:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 368 transitions. [2024-12-02 06:30:55,911 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 368 transitions. Word has length 57 [2024-12-02 06:30:55,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:55,912 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 368 transitions. [2024-12-02 06:30:55,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 368 transitions. [2024-12-02 06:30:55,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 06:30:55,912 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:55,913 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:55,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:30:55,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:55,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash -878032517, now seen corresponding path program 1 times [2024-12-02 06:30:55,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:55,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949614921] [2024-12-02 06:30:55,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:55,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-12-02 06:30:55,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:55,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949614921] [2024-12-02 06:30:55,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949614921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:55,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:55,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:55,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916305045] [2024-12-02 06:30:55,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:55,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:55,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:55,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:55,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:55,990 INFO L87 Difference]: Start difference. First operand 245 states and 368 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:56,048 INFO L93 Difference]: Finished difference Result 468 states and 720 transitions. [2024-12-02 06:30:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:56,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-12-02 06:30:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:56,050 INFO L225 Difference]: With dead ends: 468 [2024-12-02 06:30:56,051 INFO L226 Difference]: Without dead ends: 252 [2024-12-02 06:30:56,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:56,052 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 8 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:56,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 769 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-12-02 06:30:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-12-02 06:30:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 201 states have (on average 1.4527363184079602) internal successors, (292), 204 states have internal predecessors, (292), 42 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-12-02 06:30:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2024-12-02 06:30:56,067 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 57 [2024-12-02 06:30:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:56,067 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2024-12-02 06:30:56,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2024-12-02 06:30:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 06:30:56,068 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:56,068 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:56,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:30:56,069 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:56,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2040991224, now seen corresponding path program 1 times [2024-12-02 06:30:56,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:56,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668317658] [2024-12-02 06:30:56,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:56,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 06:30:56,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:56,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668317658] [2024-12-02 06:30:56,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668317658] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:56,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:56,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:56,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650559854] [2024-12-02 06:30:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:56,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:56,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:56,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:56,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:56,166 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:56,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:56,222 INFO L93 Difference]: Finished difference Result 514 states and 778 transitions. [2024-12-02 06:30:56,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:30:56,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-12-02 06:30:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:56,225 INFO L225 Difference]: With dead ends: 514 [2024-12-02 06:30:56,226 INFO L226 Difference]: Without dead ends: 291 [2024-12-02 06:30:56,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:56,227 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 24 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:56,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 787 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-12-02 06:30:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 288. [2024-12-02 06:30:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 233 states have (on average 1.4120171673819744) internal successors, (329), 236 states have internal predecessors, (329), 45 states have call successors, (45), 9 states have call predecessors, (45), 9 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 06:30:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 419 transitions. [2024-12-02 06:30:56,251 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 419 transitions. Word has length 58 [2024-12-02 06:30:56,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:56,251 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 419 transitions. [2024-12-02 06:30:56,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:30:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 419 transitions. [2024-12-02 06:30:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:30:56,252 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:56,253 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:56,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:30:56,253 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:56,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash -521920408, now seen corresponding path program 1 times [2024-12-02 06:30:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347429007] [2024-12-02 06:30:56,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 06:30:56,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:56,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347429007] [2024-12-02 06:30:56,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347429007] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:56,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:56,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:30:56,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109805214] [2024-12-02 06:30:56,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:56,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:30:56,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:56,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:30:56,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:56,386 INFO L87 Difference]: Start difference. First operand 288 states and 419 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:30:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:56,431 INFO L93 Difference]: Finished difference Result 525 states and 777 transitions. [2024-12-02 06:30:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:30:56,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2024-12-02 06:30:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:56,434 INFO L225 Difference]: With dead ends: 525 [2024-12-02 06:30:56,434 INFO L226 Difference]: Without dead ends: 290 [2024-12-02 06:30:56,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:56,436 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:56,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1049 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-12-02 06:30:56,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2024-12-02 06:30:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 233 states have (on average 1.3991416309012876) internal successors, (326), 236 states have internal predecessors, (326), 45 states have call successors, (45), 9 states have call predecessors, (45), 9 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 06:30:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 416 transitions. [2024-12-02 06:30:56,459 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 416 transitions. Word has length 76 [2024-12-02 06:30:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:56,459 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 416 transitions. [2024-12-02 06:30:56,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:30:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 416 transitions. [2024-12-02 06:30:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 06:30:56,461 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:56,461 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:56,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:30:56,461 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:56,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1170030260, now seen corresponding path program 1 times [2024-12-02 06:30:56,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:56,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138431748] [2024-12-02 06:30:56,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:56,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-12-02 06:30:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138431748] [2024-12-02 06:30:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138431748] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:56,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:56,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887775386] [2024-12-02 06:30:56,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:56,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:56,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:56,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:56,582 INFO L87 Difference]: Start difference. First operand 288 states and 416 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:30:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:56,640 INFO L93 Difference]: Finished difference Result 512 states and 761 transitions. [2024-12-02 06:30:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:56,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2024-12-02 06:30:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:56,643 INFO L225 Difference]: With dead ends: 512 [2024-12-02 06:30:56,643 INFO L226 Difference]: Without dead ends: 282 [2024-12-02 06:30:56,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:56,645 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 9 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:56,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 752 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-12-02 06:30:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-12-02 06:30:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 228 states have (on average 1.3771929824561404) internal successors, (314), 231 states have internal predecessors, (314), 44 states have call successors, (44), 9 states have call predecessors, (44), 9 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-12-02 06:30:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 402 transitions. [2024-12-02 06:30:56,666 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 402 transitions. Word has length 105 [2024-12-02 06:30:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:56,667 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 402 transitions. [2024-12-02 06:30:56,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:30:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 402 transitions. [2024-12-02 06:30:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 06:30:56,669 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:56,669 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:56,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:30:56,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:56,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2085053298, now seen corresponding path program 1 times [2024-12-02 06:30:56,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:56,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602635433] [2024-12-02 06:30:56,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-12-02 06:30:56,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602635433] [2024-12-02 06:30:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602635433] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:56,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179316817] [2024-12-02 06:30:56,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:56,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:56,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:56,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:56,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:30:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:57,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:30:57,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-12-02 06:30:57,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:30:57,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179316817] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:57,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:30:57,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:30:57,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645264864] [2024-12-02 06:30:57,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:57,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:57,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:57,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:57,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:30:57,066 INFO L87 Difference]: Start difference. First operand 282 states and 402 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:30:57,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:57,150 INFO L93 Difference]: Finished difference Result 509 states and 741 transitions. [2024-12-02 06:30:57,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:30:57,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 136 [2024-12-02 06:30:57,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:57,154 INFO L225 Difference]: With dead ends: 509 [2024-12-02 06:30:57,154 INFO L226 Difference]: Without dead ends: 265 [2024-12-02 06:30:57,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:30:57,155 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 35 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:57,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 708 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:57,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-12-02 06:30:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-12-02 06:30:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 214 states have (on average 1.3691588785046729) internal successors, (293), 217 states have internal predecessors, (293), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-12-02 06:30:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 375 transitions. [2024-12-02 06:30:57,172 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 375 transitions. Word has length 136 [2024-12-02 06:30:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:57,173 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 375 transitions. [2024-12-02 06:30:57,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:30:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 375 transitions. [2024-12-02 06:30:57,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 06:30:57,175 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:57,175 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:57,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:30:57,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:57,376 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:57,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1935764498, now seen corresponding path program 1 times [2024-12-02 06:30:57,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:57,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072814831] [2024-12-02 06:30:57,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:57,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-12-02 06:30:57,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:57,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072814831] [2024-12-02 06:30:57,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072814831] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:57,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154299926] [2024-12-02 06:30:57,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:57,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:57,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:57,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:57,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:30:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:57,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:30:57,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-12-02 06:30:57,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:30:57,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154299926] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:57,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:30:57,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:30:57,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557469314] [2024-12-02 06:30:57,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:57,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:57,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:57,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:57,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:30:57,737 INFO L87 Difference]: Start difference. First operand 265 states and 375 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:30:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:57,801 INFO L93 Difference]: Finished difference Result 475 states and 687 transitions. [2024-12-02 06:30:57,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:30:57,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 140 [2024-12-02 06:30:57,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:57,804 INFO L225 Difference]: With dead ends: 475 [2024-12-02 06:30:57,804 INFO L226 Difference]: Without dead ends: 246 [2024-12-02 06:30:57,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:30:57,805 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 37 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:57,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 704 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-12-02 06:30:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-12-02 06:30:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 198 states have (on average 1.3636363636363635) internal successors, (270), 201 states have internal predecessors, (270), 38 states have call successors, (38), 9 states have call predecessors, (38), 9 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 06:30:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 346 transitions. [2024-12-02 06:30:57,820 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 346 transitions. Word has length 140 [2024-12-02 06:30:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:57,820 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 346 transitions. [2024-12-02 06:30:57,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:30:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 346 transitions. [2024-12-02 06:30:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 06:30:57,822 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:57,822 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:57,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 06:30:58,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 06:30:58,023 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:58,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:58,023 INFO L85 PathProgramCache]: Analyzing trace with hash -659688106, now seen corresponding path program 1 times [2024-12-02 06:30:58,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:58,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614261060] [2024-12-02 06:30:58,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:58,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-12-02 06:30:58,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:58,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614261060] [2024-12-02 06:30:58,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614261060] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:58,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613355439] [2024-12-02 06:30:58,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:58,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:58,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:58,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:58,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:30:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:58,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:30:58,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-12-02 06:30:58,328 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:30:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613355439] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:58,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:30:58,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:30:58,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61204934] [2024-12-02 06:30:58,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:58,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:58,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:58,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:58,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:30:58,330 INFO L87 Difference]: Start difference. First operand 246 states and 346 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:30:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:58,400 INFO L93 Difference]: Finished difference Result 466 states and 670 transitions. [2024-12-02 06:30:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:30:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 143 [2024-12-02 06:30:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:58,403 INFO L225 Difference]: With dead ends: 466 [2024-12-02 06:30:58,404 INFO L226 Difference]: Without dead ends: 278 [2024-12-02 06:30:58,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:30:58,405 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 33 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:58,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 717 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-12-02 06:30:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2024-12-02 06:30:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 226 states have (on average 1.3628318584070795) internal successors, (308), 229 states have internal predecessors, (308), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-12-02 06:30:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 390 transitions. [2024-12-02 06:30:58,420 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 390 transitions. Word has length 143 [2024-12-02 06:30:58,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:58,421 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 390 transitions. [2024-12-02 06:30:58,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:30:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 390 transitions. [2024-12-02 06:30:58,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 06:30:58,423 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:58,423 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:58,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:30:58,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 06:30:58,624 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:58,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2107587412, now seen corresponding path program 2 times [2024-12-02 06:30:58,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:58,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077968090] [2024-12-02 06:30:58,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:30:58,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:58,647 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 06:30:58,647 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:30:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-12-02 06:30:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077968090] [2024-12-02 06:30:58,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077968090] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:58,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:30:58,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:30:58,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920321049] [2024-12-02 06:30:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:58,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:58,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:58,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:30:58,689 INFO L87 Difference]: Start difference. First operand 278 states and 390 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 06:30:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:58,729 INFO L93 Difference]: Finished difference Result 421 states and 606 transitions. [2024-12-02 06:30:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 143 [2024-12-02 06:30:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:58,732 INFO L225 Difference]: With dead ends: 421 [2024-12-02 06:30:58,732 INFO L226 Difference]: Without dead ends: 282 [2024-12-02 06:30:58,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:30:58,733 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 3 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:58,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 761 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:58,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-12-02 06:30:58,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-12-02 06:30:58,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 229 states have (on average 1.3580786026200873) internal successors, (311), 232 states have internal predecessors, (311), 41 states have call successors, (41), 11 states have call predecessors, (41), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-12-02 06:30:58,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 393 transitions. [2024-12-02 06:30:58,748 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 393 transitions. Word has length 143 [2024-12-02 06:30:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:58,749 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 393 transitions. [2024-12-02 06:30:58,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 06:30:58,749 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 393 transitions. [2024-12-02 06:30:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 06:30:58,751 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:58,751 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:58,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:30:58,751 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:58,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1463054989, now seen corresponding path program 1 times [2024-12-02 06:30:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:58,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836521064] [2024-12-02 06:30:58,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:58,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-12-02 06:30:58,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:58,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836521064] [2024-12-02 06:30:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836521064] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:58,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023526338] [2024-12-02 06:30:58,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:58,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:58,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:58,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:58,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:30:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:59,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:30:59,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-12-02 06:30:59,102 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:30:59,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023526338] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:59,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:30:59,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 06:30:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634456055] [2024-12-02 06:30:59,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:59,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:59,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:59,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:59,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:30:59,103 INFO L87 Difference]: Start difference. First operand 282 states and 393 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 06:30:59,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:59,143 INFO L93 Difference]: Finished difference Result 430 states and 614 transitions. [2024-12-02 06:30:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:59,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 150 [2024-12-02 06:30:59,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:59,146 INFO L225 Difference]: With dead ends: 430 [2024-12-02 06:30:59,146 INFO L226 Difference]: Without dead ends: 287 [2024-12-02 06:30:59,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:30:59,147 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 4 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:59,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 763 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-12-02 06:30:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-12-02 06:30:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 233 states have (on average 1.351931330472103) internal successors, (315), 236 states have internal predecessors, (315), 41 states have call successors, (41), 12 states have call predecessors, (41), 12 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-12-02 06:30:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 397 transitions. [2024-12-02 06:30:59,163 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 397 transitions. Word has length 150 [2024-12-02 06:30:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:59,163 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 397 transitions. [2024-12-02 06:30:59,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-12-02 06:30:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 397 transitions. [2024-12-02 06:30:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 06:30:59,166 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:59,166 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:59,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:30:59,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 06:30:59,367 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:59,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2093957054, now seen corresponding path program 1 times [2024-12-02 06:30:59,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:59,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724501601] [2024-12-02 06:30:59,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:59,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-12-02 06:30:59,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:59,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724501601] [2024-12-02 06:30:59,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724501601] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:59,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147528469] [2024-12-02 06:30:59,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:59,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:59,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:59,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:59,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:30:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:59,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:30:59,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-12-02 06:30:59,746 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:30:59,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147528469] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:30:59,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:30:59,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 06:30:59,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896283316] [2024-12-02 06:30:59,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:30:59,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:30:59,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:59,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:30:59,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:30:59,747 INFO L87 Difference]: Start difference. First operand 287 states and 397 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-12-02 06:30:59,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:59,788 INFO L93 Difference]: Finished difference Result 434 states and 614 transitions. [2024-12-02 06:30:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:30:59,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 158 [2024-12-02 06:30:59,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:59,792 INFO L225 Difference]: With dead ends: 434 [2024-12-02 06:30:59,792 INFO L226 Difference]: Without dead ends: 286 [2024-12-02 06:30:59,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:30:59,793 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 5 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:59,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 753 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:30:59,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-12-02 06:30:59,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-12-02 06:30:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 233 states have (on average 1.3390557939914163) internal successors, (312), 235 states have internal predecessors, (312), 40 states have call successors, (40), 12 states have call predecessors, (40), 12 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 06:30:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 392 transitions. [2024-12-02 06:30:59,809 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 392 transitions. Word has length 158 [2024-12-02 06:30:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:59,809 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 392 transitions. [2024-12-02 06:30:59,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-12-02 06:30:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 392 transitions. [2024-12-02 06:30:59,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 06:30:59,812 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:59,812 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:59,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:31:00,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 06:31:00,013 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:00,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash -980053281, now seen corresponding path program 1 times [2024-12-02 06:31:00,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:00,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153733859] [2024-12-02 06:31:00,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:00,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-12-02 06:31:00,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153733859] [2024-12-02 06:31:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153733859] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222358790] [2024-12-02 06:31:00,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:00,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:00,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:00,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:00,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:31:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:00,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:31:00,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-12-02 06:31:00,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:00,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222358790] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:00,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:00,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 06:31:00,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051682450] [2024-12-02 06:31:00,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:00,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:00,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:00,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:00,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:00,392 INFO L87 Difference]: Start difference. First operand 286 states and 392 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:31:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:00,407 INFO L93 Difference]: Finished difference Result 432 states and 603 transitions. [2024-12-02 06:31:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 166 [2024-12-02 06:31:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:00,410 INFO L225 Difference]: With dead ends: 432 [2024-12-02 06:31:00,410 INFO L226 Difference]: Without dead ends: 285 [2024-12-02 06:31:00,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:00,412 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:00,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-12-02 06:31:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-12-02 06:31:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 233 states have (on average 1.3347639484978542) internal successors, (311), 234 states have internal predecessors, (311), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-12-02 06:31:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 389 transitions. [2024-12-02 06:31:00,426 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 389 transitions. Word has length 166 [2024-12-02 06:31:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:00,427 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 389 transitions. [2024-12-02 06:31:00,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 06:31:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 389 transitions. [2024-12-02 06:31:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 06:31:00,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:00,429 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:00,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:31:00,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 06:31:00,630 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:00,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1588143506, now seen corresponding path program 1 times [2024-12-02 06:31:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869100173] [2024-12-02 06:31:00,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-12-02 06:31:00,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869100173] [2024-12-02 06:31:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869100173] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501422051] [2024-12-02 06:31:00,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:00,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:00,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:00,781 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:00,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:31:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:00,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 06:31:00,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-12-02 06:31:01,034 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:01,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501422051] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:01,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:01,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 06:31:01,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074138536] [2024-12-02 06:31:01,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:01,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:01,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:01,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:01,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:31:01,035 INFO L87 Difference]: Start difference. First operand 285 states and 389 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 06:31:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:01,138 INFO L93 Difference]: Finished difference Result 645 states and 886 transitions. [2024-12-02 06:31:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 168 [2024-12-02 06:31:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:01,142 INFO L225 Difference]: With dead ends: 645 [2024-12-02 06:31:01,142 INFO L226 Difference]: Without dead ends: 499 [2024-12-02 06:31:01,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:01,143 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 329 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:01,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 693 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:31:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-12-02 06:31:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 444. [2024-12-02 06:31:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 362 states have (on average 1.361878453038674) internal successors, (493), 364 states have internal predecessors, (493), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-12-02 06:31:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 607 transitions. [2024-12-02 06:31:01,172 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 607 transitions. Word has length 168 [2024-12-02 06:31:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:01,172 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 607 transitions. [2024-12-02 06:31:01,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 06:31:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 607 transitions. [2024-12-02 06:31:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 06:31:01,176 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:01,176 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:01,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:31:01,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:01,377 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:01,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash -990875580, now seen corresponding path program 1 times [2024-12-02 06:31:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:01,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994006139] [2024-12-02 06:31:01,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:01,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-12-02 06:31:01,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:01,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994006139] [2024-12-02 06:31:01,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994006139] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:01,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158509532] [2024-12-02 06:31:01,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:01,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:01,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:01,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:01,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:31:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:01,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:31:01,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-12-02 06:31:01,800 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158509532] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:01,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 06:31:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012015040] [2024-12-02 06:31:01,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:01,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:01,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:01,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:31:01,802 INFO L87 Difference]: Start difference. First operand 444 states and 607 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:01,889 INFO L93 Difference]: Finished difference Result 688 states and 960 transitions. [2024-12-02 06:31:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:01,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 196 [2024-12-02 06:31:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:01,893 INFO L225 Difference]: With dead ends: 688 [2024-12-02 06:31:01,893 INFO L226 Difference]: Without dead ends: 444 [2024-12-02 06:31:01,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:01,895 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 31 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:01,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 688 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:31:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-12-02 06:31:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-12-02 06:31:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 362 states have (on average 1.3453038674033149) internal successors, (487), 364 states have internal predecessors, (487), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-12-02 06:31:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2024-12-02 06:31:01,919 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 196 [2024-12-02 06:31:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:01,919 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2024-12-02 06:31:01,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2024-12-02 06:31:01,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 06:31:01,922 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:01,923 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:01,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 06:31:02,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:02,123 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:02,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash -879394195, now seen corresponding path program 1 times [2024-12-02 06:31:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868206309] [2024-12-02 06:31:02,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-12-02 06:31:02,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868206309] [2024-12-02 06:31:02,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868206309] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035746019] [2024-12-02 06:31:02,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:02,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:02,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:02,219 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:02,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:31:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:02,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:31:02,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2024-12-02 06:31:02,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:02,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035746019] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:02,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:02,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 06:31:02,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202231043] [2024-12-02 06:31:02,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:02,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:02,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:02,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:02,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:31:02,458 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:02,532 INFO L93 Difference]: Finished difference Result 688 states and 946 transitions. [2024-12-02 06:31:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 197 [2024-12-02 06:31:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:02,536 INFO L225 Difference]: With dead ends: 688 [2024-12-02 06:31:02,536 INFO L226 Difference]: Without dead ends: 456 [2024-12-02 06:31:02,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:02,538 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 7 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:02,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 696 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-12-02 06:31:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2024-12-02 06:31:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 372 states have (on average 1.346774193548387) internal successors, (501), 374 states have internal predecessors, (501), 57 states have call successors, (57), 26 states have call predecessors, (57), 26 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-12-02 06:31:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 615 transitions. [2024-12-02 06:31:02,554 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 615 transitions. Word has length 197 [2024-12-02 06:31:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:02,554 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 615 transitions. [2024-12-02 06:31:02,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 615 transitions. [2024-12-02 06:31:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 06:31:02,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:02,557 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:02,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:31:02,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:02,757 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:02,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:02,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1134361886, now seen corresponding path program 1 times [2024-12-02 06:31:02,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:02,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923313773] [2024-12-02 06:31:02,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:02,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-12-02 06:31:02,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:02,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923313773] [2024-12-02 06:31:02,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923313773] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:02,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387266656] [2024-12-02 06:31:02,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:02,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:02,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:02,894 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:02,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:31:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:03,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:31:03,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-12-02 06:31:03,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387266656] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:03,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:03,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 06:31:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089961843] [2024-12-02 06:31:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:03,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:03,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:03,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:03,190 INFO L87 Difference]: Start difference. First operand 456 states and 615 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:31:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:03,235 INFO L93 Difference]: Finished difference Result 962 states and 1323 transitions. [2024-12-02 06:31:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:03,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 198 [2024-12-02 06:31:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:03,240 INFO L225 Difference]: With dead ends: 962 [2024-12-02 06:31:03,241 INFO L226 Difference]: Without dead ends: 718 [2024-12-02 06:31:03,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:03,243 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 161 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:03,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 520 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-12-02 06:31:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 541. [2024-12-02 06:31:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 447 states have (on average 1.3557046979865772) internal successors, (606), 450 states have internal predecessors, (606), 62 states have call successors, (62), 31 states have call predecessors, (62), 31 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2024-12-02 06:31:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 730 transitions. [2024-12-02 06:31:03,279 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 730 transitions. Word has length 198 [2024-12-02 06:31:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:03,279 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 730 transitions. [2024-12-02 06:31:03,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:31:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 730 transitions. [2024-12-02 06:31:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 06:31:03,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:03,282 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:03,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 06:31:03,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 06:31:03,483 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:03,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:03,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1990356785, now seen corresponding path program 1 times [2024-12-02 06:31:03,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:03,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80783845] [2024-12-02 06:31:03,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:03,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-12-02 06:31:03,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:03,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80783845] [2024-12-02 06:31:03,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80783845] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:03,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242345921] [2024-12-02 06:31:03,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:03,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:03,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:03,637 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:03,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 06:31:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:03,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:31:03,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-12-02 06:31:03,906 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:03,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242345921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:03,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:03,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 06:31:03,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217105863] [2024-12-02 06:31:03,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:03,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:03,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:03,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:03,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:03,908 INFO L87 Difference]: Start difference. First operand 541 states and 730 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:31:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:03,960 INFO L93 Difference]: Finished difference Result 1147 states and 1576 transitions. [2024-12-02 06:31:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 199 [2024-12-02 06:31:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:03,965 INFO L225 Difference]: With dead ends: 1147 [2024-12-02 06:31:03,965 INFO L226 Difference]: Without dead ends: 851 [2024-12-02 06:31:03,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:03,967 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 165 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:03,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 537 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-12-02 06:31:04,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 661. [2024-12-02 06:31:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 555 states have (on average 1.3693693693693694) internal successors, (760), 560 states have internal predecessors, (760), 68 states have call successors, (68), 37 states have call predecessors, (68), 37 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 06:31:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 896 transitions. [2024-12-02 06:31:04,007 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 896 transitions. Word has length 199 [2024-12-02 06:31:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:04,008 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 896 transitions. [2024-12-02 06:31:04,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:31:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 896 transitions. [2024-12-02 06:31:04,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-12-02 06:31:04,010 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:04,010 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:04,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 06:31:04,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 06:31:04,210 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:04,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:04,211 INFO L85 PathProgramCache]: Analyzing trace with hash -706079719, now seen corresponding path program 1 times [2024-12-02 06:31:04,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:04,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52939845] [2024-12-02 06:31:04,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:04,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-12-02 06:31:04,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:04,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52939845] [2024-12-02 06:31:04,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52939845] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:04,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310624425] [2024-12-02 06:31:04,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:04,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:04,342 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:04,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 06:31:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:04,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:31:04,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-12-02 06:31:04,588 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:04,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310624425] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:04,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:04,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 06:31:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601033912] [2024-12-02 06:31:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:04,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:04,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:04,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:04,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:04,589 INFO L87 Difference]: Start difference. First operand 661 states and 896 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:04,660 INFO L93 Difference]: Finished difference Result 1385 states and 1914 transitions. [2024-12-02 06:31:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:04,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 200 [2024-12-02 06:31:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:04,666 INFO L225 Difference]: With dead ends: 1385 [2024-12-02 06:31:04,666 INFO L226 Difference]: Without dead ends: 1009 [2024-12-02 06:31:04,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:04,668 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 172 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:04,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 553 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2024-12-02 06:31:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 791. [2024-12-02 06:31:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 677 states have (on average 1.394387001477105) internal successors, (944), 686 states have internal predecessors, (944), 72 states have call successors, (72), 41 states have call predecessors, (72), 41 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 06:31:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1088 transitions. [2024-12-02 06:31:04,712 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1088 transitions. Word has length 200 [2024-12-02 06:31:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:04,712 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1088 transitions. [2024-12-02 06:31:04,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1088 transitions. [2024-12-02 06:31:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-12-02 06:31:04,714 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:04,715 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:04,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 06:31:04,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 06:31:04,915 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:04,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1344904279, now seen corresponding path program 1 times [2024-12-02 06:31:04,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:04,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939639471] [2024-12-02 06:31:04,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:04,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-12-02 06:31:05,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939639471] [2024-12-02 06:31:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939639471] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438915681] [2024-12-02 06:31:05,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:05,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:05,052 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:05,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 06:31:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:05,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 06:31:05,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-12-02 06:31:05,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438915681] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:05,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 06:31:05,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440997689] [2024-12-02 06:31:05,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:05,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:31:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:05,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:31:05,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:31:05,285 INFO L87 Difference]: Start difference. First operand 791 states and 1088 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:05,328 INFO L93 Difference]: Finished difference Result 1425 states and 1975 transitions. [2024-12-02 06:31:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:05,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 200 [2024-12-02 06:31:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:05,333 INFO L225 Difference]: With dead ends: 1425 [2024-12-02 06:31:05,333 INFO L226 Difference]: Without dead ends: 793 [2024-12-02 06:31:05,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:31:05,334 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 0 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:05,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1003 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-12-02 06:31:05,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 791. [2024-12-02 06:31:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 677 states have (on average 1.3855243722304285) internal successors, (938), 686 states have internal predecessors, (938), 72 states have call successors, (72), 41 states have call predecessors, (72), 41 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 06:31:05,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1082 transitions. [2024-12-02 06:31:05,371 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1082 transitions. Word has length 200 [2024-12-02 06:31:05,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:05,371 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1082 transitions. [2024-12-02 06:31:05,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1082 transitions. [2024-12-02 06:31:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 06:31:05,374 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:05,374 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:05,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 06:31:05,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:05,575 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:05,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1201158976, now seen corresponding path program 1 times [2024-12-02 06:31:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029974703] [2024-12-02 06:31:05,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2024-12-02 06:31:05,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:05,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029974703] [2024-12-02 06:31:05,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029974703] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:05,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230047912] [2024-12-02 06:31:05,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:05,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:05,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:05,743 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:05,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 06:31:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:05,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:31:05,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 129 proven. 11 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-12-02 06:31:05,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 06:31:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230047912] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:06,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:31:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-12-02 06:31:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751513793] [2024-12-02 06:31:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:06,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:06,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:06,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:06,122 INFO L87 Difference]: Start difference. First operand 791 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 06:31:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:06,178 INFO L93 Difference]: Finished difference Result 1447 states and 1999 transitions. [2024-12-02 06:31:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:31:06,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 207 [2024-12-02 06:31:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:06,182 INFO L225 Difference]: With dead ends: 1447 [2024-12-02 06:31:06,183 INFO L226 Difference]: Without dead ends: 782 [2024-12-02 06:31:06,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:06,184 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 35 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:06,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 471 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-12-02 06:31:06,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 782. [2024-12-02 06:31:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 671 states have (on average 1.375558867362146) internal successors, (923), 680 states have internal predecessors, (923), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-12-02 06:31:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1061 transitions. [2024-12-02 06:31:06,222 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1061 transitions. Word has length 207 [2024-12-02 06:31:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:06,222 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1061 transitions. [2024-12-02 06:31:06,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 06:31:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1061 transitions. [2024-12-02 06:31:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-12-02 06:31:06,224 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:06,225 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:06,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 06:31:06,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 06:31:06,425 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:06,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:06,426 INFO L85 PathProgramCache]: Analyzing trace with hash -360643021, now seen corresponding path program 1 times [2024-12-02 06:31:06,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:06,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579837053] [2024-12-02 06:31:06,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:06,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2024-12-02 06:31:06,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:06,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579837053] [2024-12-02 06:31:06,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579837053] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577672316] [2024-12-02 06:31:06,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:06,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:06,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:06,577 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:06,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 06:31:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:06,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 06:31:06,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-12-02 06:31:06,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:06,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577672316] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:06,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:06,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-12-02 06:31:06,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669342961] [2024-12-02 06:31:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:06,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:31:06,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:06,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:31:06,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:06,821 INFO L87 Difference]: Start difference. First operand 782 states and 1061 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:06,860 INFO L93 Difference]: Finished difference Result 1455 states and 1992 transitions. [2024-12-02 06:31:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 231 [2024-12-02 06:31:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:06,865 INFO L225 Difference]: With dead ends: 1455 [2024-12-02 06:31:06,865 INFO L226 Difference]: Without dead ends: 782 [2024-12-02 06:31:06,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:06,867 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 0 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:06,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1000 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-12-02 06:31:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 782. [2024-12-02 06:31:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 671 states have (on average 1.3710879284649777) internal successors, (920), 680 states have internal predecessors, (920), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-12-02 06:31:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1058 transitions. [2024-12-02 06:31:06,902 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1058 transitions. Word has length 231 [2024-12-02 06:31:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:06,903 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1058 transitions. [2024-12-02 06:31:06,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1058 transitions. [2024-12-02 06:31:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-12-02 06:31:06,905 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:06,905 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:06,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 06:31:07,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 06:31:07,105 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:07,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash 286361644, now seen corresponding path program 1 times [2024-12-02 06:31:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:07,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493039350] [2024-12-02 06:31:07,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:07,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 83 proven. 73 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-12-02 06:31:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493039350] [2024-12-02 06:31:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493039350] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:07,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318902087] [2024-12-02 06:31:07,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:07,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:07,177 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:07,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 06:31:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:07,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:31:07,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 260 proven. 9 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2024-12-02 06:31:07,425 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-12-02 06:31:07,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318902087] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:31:07,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:31:07,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-12-02 06:31:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403054426] [2024-12-02 06:31:07,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:07,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:31:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:07,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:31:07,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:07,547 INFO L87 Difference]: Start difference. First operand 782 states and 1058 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:31:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:07,615 INFO L93 Difference]: Finished difference Result 1493 states and 2035 transitions. [2024-12-02 06:31:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:07,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 237 [2024-12-02 06:31:07,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:07,619 INFO L225 Difference]: With dead ends: 1493 [2024-12-02 06:31:07,619 INFO L226 Difference]: Without dead ends: 779 [2024-12-02 06:31:07,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:07,621 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 48 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:07,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 462 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-12-02 06:31:07,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2024-12-02 06:31:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 668 states have (on average 1.3682634730538923) internal successors, (914), 677 states have internal predecessors, (914), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-12-02 06:31:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1052 transitions. [2024-12-02 06:31:07,654 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1052 transitions. Word has length 237 [2024-12-02 06:31:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:07,655 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1052 transitions. [2024-12-02 06:31:07,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:31:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1052 transitions. [2024-12-02 06:31:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-12-02 06:31:07,657 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:07,658 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:07,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 06:31:07,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 06:31:07,858 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:07,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash 875038169, now seen corresponding path program 1 times [2024-12-02 06:31:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072246529] [2024-12-02 06:31:07,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-12-02 06:31:08,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:08,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072246529] [2024-12-02 06:31:08,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072246529] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:08,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:08,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:31:08,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398476841] [2024-12-02 06:31:08,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:08,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:31:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:08,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:31:08,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:31:08,142 INFO L87 Difference]: Start difference. First operand 779 states and 1052 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:08,180 INFO L93 Difference]: Finished difference Result 1263 states and 1729 transitions. [2024-12-02 06:31:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:31:08,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 264 [2024-12-02 06:31:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:08,185 INFO L225 Difference]: With dead ends: 1263 [2024-12-02 06:31:08,185 INFO L226 Difference]: Without dead ends: 754 [2024-12-02 06:31:08,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:31:08,186 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:08,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 493 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:08,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-12-02 06:31:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-12-02 06:31:08,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 644 states have (on average 1.3493788819875776) internal successors, (869), 652 states have internal predecessors, (869), 69 states have call successors, (69), 41 states have call predecessors, (69), 40 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 06:31:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1006 transitions. [2024-12-02 06:31:08,223 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1006 transitions. Word has length 264 [2024-12-02 06:31:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:08,223 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1006 transitions. [2024-12-02 06:31:08,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:31:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1006 transitions. [2024-12-02 06:31:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 06:31:08,225 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:08,226 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:08,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 06:31:08,226 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:08,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1698741409, now seen corresponding path program 1 times [2024-12-02 06:31:08,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:08,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971492960] [2024-12-02 06:31:08,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:08,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-12-02 06:31:08,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:08,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971492960] [2024-12-02 06:31:08,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971492960] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:08,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:08,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:31:08,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716390377] [2024-12-02 06:31:08,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:08,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:31:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:08,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:31:08,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:08,681 INFO L87 Difference]: Start difference. First operand 754 states and 1006 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 06:31:08,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:08,769 INFO L93 Difference]: Finished difference Result 1085 states and 1517 transitions. [2024-12-02 06:31:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:31:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 265 [2024-12-02 06:31:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:08,775 INFO L225 Difference]: With dead ends: 1085 [2024-12-02 06:31:08,776 INFO L226 Difference]: Without dead ends: 1083 [2024-12-02 06:31:08,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:08,777 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 123 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:08,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1807 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:08,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-12-02 06:31:08,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 760. [2024-12-02 06:31:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 648 states have (on average 1.3472222222222223) internal successors, (873), 657 states have internal predecessors, (873), 70 states have call successors, (70), 42 states have call predecessors, (70), 41 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2024-12-02 06:31:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1012 transitions. [2024-12-02 06:31:08,819 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1012 transitions. Word has length 265 [2024-12-02 06:31:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:08,819 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 1012 transitions. [2024-12-02 06:31:08,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-12-02 06:31:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1012 transitions. [2024-12-02 06:31:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-12-02 06:31:08,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:08,821 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:08,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 06:31:08,822 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:08,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:08,822 INFO L85 PathProgramCache]: Analyzing trace with hash 903219750, now seen corresponding path program 1 times [2024-12-02 06:31:08,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:08,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962627580] [2024-12-02 06:31:08,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:08,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-12-02 06:31:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962627580] [2024-12-02 06:31:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962627580] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864476535] [2024-12-02 06:31:09,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:09,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:09,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:09,186 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:09,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 06:31:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:09,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 06:31:09,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-12-02 06:31:09,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-12-02 06:31:10,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864476535] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:31:10,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:31:10,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-12-02 06:31:10,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579679339] [2024-12-02 06:31:10,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:10,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:31:10,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:10,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:31:10,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:31:10,036 INFO L87 Difference]: Start difference. First operand 760 states and 1012 transitions. Second operand has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2024-12-02 06:31:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:10,470 INFO L93 Difference]: Finished difference Result 1821 states and 2502 transitions. [2024-12-02 06:31:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:31:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 273 [2024-12-02 06:31:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:10,477 INFO L225 Difference]: With dead ends: 1821 [2024-12-02 06:31:10,477 INFO L226 Difference]: Without dead ends: 1352 [2024-12-02 06:31:10,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 537 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-12-02 06:31:10,479 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 301 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 4095 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:10,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 4095 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:31:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2024-12-02 06:31:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1066. [2024-12-02 06:31:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 914 states have (on average 1.3479212253829322) internal successors, (1232), 924 states have internal predecessors, (1232), 94 states have call successors, (94), 55 states have call predecessors, (94), 57 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2024-12-02 06:31:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1424 transitions. [2024-12-02 06:31:10,546 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1424 transitions. Word has length 273 [2024-12-02 06:31:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:10,546 INFO L471 AbstractCegarLoop]: Abstraction has 1066 states and 1424 transitions. [2024-12-02 06:31:10,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2024-12-02 06:31:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1424 transitions. [2024-12-02 06:31:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-12-02 06:31:10,550 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:10,550 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:10,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 06:31:10,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 06:31:10,750 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:10,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:10,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1864833767, now seen corresponding path program 1 times [2024-12-02 06:31:10,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:10,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163142954] [2024-12-02 06:31:10,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:10,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2024-12-02 06:31:10,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163142954] [2024-12-02 06:31:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163142954] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453005425] [2024-12-02 06:31:10,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:10,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:10,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:10,892 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:10,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 06:31:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:11,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:31:11,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2024-12-02 06:31:11,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453005425] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:11,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:11,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 06:31:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524130954] [2024-12-02 06:31:11,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:11,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:11,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:11,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:31:11,150 INFO L87 Difference]: Start difference. First operand 1066 states and 1424 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:31:11,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:11,246 INFO L93 Difference]: Finished difference Result 1995 states and 2712 transitions. [2024-12-02 06:31:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 273 [2024-12-02 06:31:11,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:11,252 INFO L225 Difference]: With dead ends: 1995 [2024-12-02 06:31:11,253 INFO L226 Difference]: Without dead ends: 1050 [2024-12-02 06:31:11,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:11,255 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 4 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:11,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 684 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2024-12-02 06:31:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1050. [2024-12-02 06:31:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 903 states have (on average 1.3377630121816169) internal successors, (1208), 913 states have internal predecessors, (1208), 90 states have call successors, (90), 55 states have call predecessors, (90), 56 states have return successors, (93), 88 states have call predecessors, (93), 89 states have call successors, (93) [2024-12-02 06:31:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1391 transitions. [2024-12-02 06:31:11,326 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1391 transitions. Word has length 273 [2024-12-02 06:31:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:11,327 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1391 transitions. [2024-12-02 06:31:11,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:31:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1391 transitions. [2024-12-02 06:31:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-12-02 06:31:11,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:11,330 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:11,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-12-02 06:31:11,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 06:31:11,531 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:11,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:11,531 INFO L85 PathProgramCache]: Analyzing trace with hash 82715142, now seen corresponding path program 1 times [2024-12-02 06:31:11,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:11,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954064674] [2024-12-02 06:31:11,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:11,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-12-02 06:31:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954064674] [2024-12-02 06:31:11,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954064674] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266144921] [2024-12-02 06:31:11,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:11,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:11,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:11,664 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:11,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 06:31:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:11,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:31:11,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-12-02 06:31:11,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:11,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266144921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:11,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:11,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 06:31:11,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586383491] [2024-12-02 06:31:11,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:11,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:11,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:11,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:11,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:31:11,890 INFO L87 Difference]: Start difference. First operand 1050 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 06:31:11,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:11,965 INFO L93 Difference]: Finished difference Result 1814 states and 2439 transitions. [2024-12-02 06:31:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:11,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 276 [2024-12-02 06:31:11,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:11,970 INFO L225 Difference]: With dead ends: 1814 [2024-12-02 06:31:11,970 INFO L226 Difference]: Without dead ends: 876 [2024-12-02 06:31:11,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:11,972 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 4 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:11,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 712 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-12-02 06:31:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2024-12-02 06:31:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 747 states have (on average 1.322623828647925) internal successors, (988), 757 states have internal predecessors, (988), 81 states have call successors, (81), 48 states have call predecessors, (81), 47 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 06:31:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1149 transitions. [2024-12-02 06:31:12,016 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1149 transitions. Word has length 276 [2024-12-02 06:31:12,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:12,016 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1149 transitions. [2024-12-02 06:31:12,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 06:31:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1149 transitions. [2024-12-02 06:31:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-12-02 06:31:12,018 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:12,019 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:12,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 06:31:12,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 06:31:12,219 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:12,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1612582383, now seen corresponding path program 1 times [2024-12-02 06:31:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:12,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138758934] [2024-12-02 06:31:12,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 24 proven. 144 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-12-02 06:31:13,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:13,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138758934] [2024-12-02 06:31:13,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138758934] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:13,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665732956] [2024-12-02 06:31:13,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:13,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:13,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:13,874 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:13,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 06:31:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:14,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 06:31:14,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-12-02 06:31:14,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665732956] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:14,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 26 [2024-12-02 06:31:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250213487] [2024-12-02 06:31:14,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:14,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:31:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:14,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:31:14,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2024-12-02 06:31:14,282 INFO L87 Difference]: Start difference. First operand 876 states and 1149 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 06:31:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:14,876 INFO L93 Difference]: Finished difference Result 2487 states and 3218 transitions. [2024-12-02 06:31:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:31:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 288 [2024-12-02 06:31:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:14,881 INFO L225 Difference]: With dead ends: 2487 [2024-12-02 06:31:14,881 INFO L226 Difference]: Without dead ends: 1899 [2024-12-02 06:31:14,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 06:31:14,883 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 638 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:14,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 2655 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:31:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-12-02 06:31:14,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1530. [2024-12-02 06:31:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1287 states have (on average 1.275058275058275) internal successors, (1641), 1303 states have internal predecessors, (1641), 160 states have call successors, (160), 83 states have call predecessors, (160), 82 states have return successors, (159), 150 states have call predecessors, (159), 159 states have call successors, (159) [2024-12-02 06:31:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1960 transitions. [2024-12-02 06:31:14,935 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1960 transitions. Word has length 288 [2024-12-02 06:31:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:14,935 INFO L471 AbstractCegarLoop]: Abstraction has 1530 states and 1960 transitions. [2024-12-02 06:31:14,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 06:31:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1960 transitions. [2024-12-02 06:31:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-12-02 06:31:14,937 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:14,937 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:14,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 06:31:15,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 06:31:15,138 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:15,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash -327995931, now seen corresponding path program 1 times [2024-12-02 06:31:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676968187] [2024-12-02 06:31:15,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:15,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-12-02 06:31:15,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676968187] [2024-12-02 06:31:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676968187] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:15,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:15,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:31:15,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691099199] [2024-12-02 06:31:15,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:15,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:15,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:15,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:31:15,304 INFO L87 Difference]: Start difference. First operand 1530 states and 1960 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 06:31:15,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:15,421 INFO L93 Difference]: Finished difference Result 3236 states and 4151 transitions. [2024-12-02 06:31:15,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:15,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 289 [2024-12-02 06:31:15,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:15,427 INFO L225 Difference]: With dead ends: 3236 [2024-12-02 06:31:15,428 INFO L226 Difference]: Without dead ends: 1980 [2024-12-02 06:31:15,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:15,430 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 307 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:15,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 684 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:15,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2024-12-02 06:31:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1635. [2024-12-02 06:31:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1370 states have (on average 1.2635036496350365) internal successors, (1731), 1387 states have internal predecessors, (1731), 177 states have call successors, (177), 88 states have call predecessors, (177), 87 states have return successors, (176), 166 states have call predecessors, (176), 176 states have call successors, (176) [2024-12-02 06:31:15,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2084 transitions. [2024-12-02 06:31:15,490 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2084 transitions. Word has length 289 [2024-12-02 06:31:15,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:15,490 INFO L471 AbstractCegarLoop]: Abstraction has 1635 states and 2084 transitions. [2024-12-02 06:31:15,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 06:31:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2084 transitions. [2024-12-02 06:31:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-12-02 06:31:15,492 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:15,492 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:15,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 06:31:15,492 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:15,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:15,492 INFO L85 PathProgramCache]: Analyzing trace with hash 940115532, now seen corresponding path program 1 times [2024-12-02 06:31:15,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:15,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874513197] [2024-12-02 06:31:15,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:15,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-12-02 06:31:15,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:15,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874513197] [2024-12-02 06:31:15,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874513197] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:15,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:15,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:31:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217579137] [2024-12-02 06:31:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:15,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:31:15,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:15,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:31:15,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:15,673 INFO L87 Difference]: Start difference. First operand 1635 states and 2084 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 06:31:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:15,767 INFO L93 Difference]: Finished difference Result 3086 states and 4039 transitions. [2024-12-02 06:31:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:31:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 294 [2024-12-02 06:31:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:15,773 INFO L225 Difference]: With dead ends: 3086 [2024-12-02 06:31:15,773 INFO L226 Difference]: Without dead ends: 1806 [2024-12-02 06:31:15,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:31:15,775 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 41 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:15,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 765 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2024-12-02 06:31:15,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1755. [2024-12-02 06:31:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1463 states have (on average 1.277511961722488) internal successors, (1869), 1480 states have internal predecessors, (1869), 204 states have call successors, (204), 88 states have call predecessors, (204), 87 states have return successors, (203), 193 states have call predecessors, (203), 203 states have call successors, (203) [2024-12-02 06:31:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2276 transitions. [2024-12-02 06:31:15,837 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2276 transitions. Word has length 294 [2024-12-02 06:31:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:15,837 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2276 transitions. [2024-12-02 06:31:15,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 06:31:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2276 transitions. [2024-12-02 06:31:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-12-02 06:31:15,838 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:15,839 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:15,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 06:31:15,839 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:15,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash -890299448, now seen corresponding path program 1 times [2024-12-02 06:31:15,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618212863] [2024-12-02 06:31:15,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:15,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2024-12-02 06:31:16,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618212863] [2024-12-02 06:31:16,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618212863] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189996909] [2024-12-02 06:31:16,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:16,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:16,243 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:16,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 06:31:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:16,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 06:31:16,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-12-02 06:31:16,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:16,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189996909] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:16,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:16,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2024-12-02 06:31:16,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538656448] [2024-12-02 06:31:16,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:16,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:31:16,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:16,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:31:16,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:31:16,549 INFO L87 Difference]: Start difference. First operand 1755 states and 2276 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 06:31:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:16,856 INFO L93 Difference]: Finished difference Result 3690 states and 4805 transitions. [2024-12-02 06:31:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:31:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 294 [2024-12-02 06:31:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:16,864 INFO L225 Difference]: With dead ends: 3690 [2024-12-02 06:31:16,864 INFO L226 Difference]: Without dead ends: 2297 [2024-12-02 06:31:16,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:31:16,867 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 123 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:16,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1856 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:31:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2024-12-02 06:31:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1987. [2024-12-02 06:31:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1658 states have (on average 1.2689987937273823) internal successors, (2104), 1677 states have internal predecessors, (2104), 231 states have call successors, (231), 98 states have call predecessors, (231), 97 states have return successors, (230), 218 states have call predecessors, (230), 230 states have call successors, (230) [2024-12-02 06:31:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2565 transitions. [2024-12-02 06:31:16,986 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2565 transitions. Word has length 294 [2024-12-02 06:31:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:16,987 INFO L471 AbstractCegarLoop]: Abstraction has 1987 states and 2565 transitions. [2024-12-02 06:31:16,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 06:31:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2565 transitions. [2024-12-02 06:31:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-12-02 06:31:16,990 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:16,991 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:17,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 06:31:17,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 06:31:17,191 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:17,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash -214966328, now seen corresponding path program 1 times [2024-12-02 06:31:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:17,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412993205] [2024-12-02 06:31:17,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 06:31:17,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:17,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412993205] [2024-12-02 06:31:17,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412993205] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:17,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826065431] [2024-12-02 06:31:17,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:17,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:17,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:17,970 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:17,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 06:31:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:18,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 06:31:18,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-12-02 06:31:18,282 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:31:18,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826065431] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:18,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:18,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 13 [2024-12-02 06:31:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803646458] [2024-12-02 06:31:18,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:18,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:31:18,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:18,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:31:18,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 06:31:18,284 INFO L87 Difference]: Start difference. First operand 1987 states and 2565 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 06:31:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:18,855 INFO L93 Difference]: Finished difference Result 3983 states and 5146 transitions. [2024-12-02 06:31:18,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:31:18,856 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 294 [2024-12-02 06:31:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:18,862 INFO L225 Difference]: With dead ends: 3983 [2024-12-02 06:31:18,862 INFO L226 Difference]: Without dead ends: 2425 [2024-12-02 06:31:18,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-12-02 06:31:18,865 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 612 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:18,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2785 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:31:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2024-12-02 06:31:18,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1948. [2024-12-02 06:31:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1631 states have (on average 1.2624156958920907) internal successors, (2059), 1650 states have internal predecessors, (2059), 219 states have call successors, (219), 98 states have call predecessors, (219), 97 states have return successors, (218), 206 states have call predecessors, (218), 218 states have call successors, (218) [2024-12-02 06:31:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2496 transitions. [2024-12-02 06:31:18,958 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2496 transitions. Word has length 294 [2024-12-02 06:31:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:18,958 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 2496 transitions. [2024-12-02 06:31:18,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 06:31:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2496 transitions. [2024-12-02 06:31:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-12-02 06:31:18,960 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:18,961 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:18,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 06:31:19,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 06:31:19,161 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:19,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash 63640710, now seen corresponding path program 1 times [2024-12-02 06:31:19,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095839537] [2024-12-02 06:31:19,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:19,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-12-02 06:31:19,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:19,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095839537] [2024-12-02 06:31:19,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095839537] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:19,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:19,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:31:19,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368159215] [2024-12-02 06:31:19,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:19,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:19,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:19,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:19,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:31:19,280 INFO L87 Difference]: Start difference. First operand 1948 states and 2496 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 06:31:19,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:19,475 INFO L93 Difference]: Finished difference Result 3664 states and 4733 transitions. [2024-12-02 06:31:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:19,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 294 [2024-12-02 06:31:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:19,483 INFO L225 Difference]: With dead ends: 3664 [2024-12-02 06:31:19,483 INFO L226 Difference]: Without dead ends: 2089 [2024-12-02 06:31:19,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:19,486 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 246 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:19,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 689 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:31:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2024-12-02 06:31:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1843. [2024-12-02 06:31:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1541 states have (on average 1.2628163530175212) internal successors, (1946), 1559 states have internal predecessors, (1946), 209 states have call successors, (209), 93 states have call predecessors, (209), 92 states have return successors, (208), 197 states have call predecessors, (208), 208 states have call successors, (208) [2024-12-02 06:31:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2363 transitions. [2024-12-02 06:31:19,642 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2363 transitions. Word has length 294 [2024-12-02 06:31:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:19,643 INFO L471 AbstractCegarLoop]: Abstraction has 1843 states and 2363 transitions. [2024-12-02 06:31:19,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 06:31:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2363 transitions. [2024-12-02 06:31:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-12-02 06:31:19,645 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:19,645 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:19,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 06:31:19,646 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:19,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:19,646 INFO L85 PathProgramCache]: Analyzing trace with hash 579938176, now seen corresponding path program 1 times [2024-12-02 06:31:19,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:19,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029848633] [2024-12-02 06:31:19,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:19,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2024-12-02 06:31:19,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:19,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029848633] [2024-12-02 06:31:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029848633] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:19,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:19,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:31:19,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659814917] [2024-12-02 06:31:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:19,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:19,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:19,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:19,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:31:19,772 INFO L87 Difference]: Start difference. First operand 1843 states and 2363 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 06:31:20,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:20,039 INFO L93 Difference]: Finished difference Result 3383 states and 4367 transitions. [2024-12-02 06:31:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:20,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 303 [2024-12-02 06:31:20,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:20,045 INFO L225 Difference]: With dead ends: 3383 [2024-12-02 06:31:20,045 INFO L226 Difference]: Without dead ends: 1905 [2024-12-02 06:31:20,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:20,048 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 433 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:20,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 898 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:31:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2024-12-02 06:31:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1664. [2024-12-02 06:31:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1399 states have (on average 1.243745532523231) internal successors, (1740), 1409 states have internal predecessors, (1740), 184 states have call successors, (184), 80 states have call predecessors, (184), 80 states have return successors, (184), 174 states have call predecessors, (184), 184 states have call successors, (184) [2024-12-02 06:31:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2108 transitions. [2024-12-02 06:31:20,124 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2108 transitions. Word has length 303 [2024-12-02 06:31:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:20,125 INFO L471 AbstractCegarLoop]: Abstraction has 1664 states and 2108 transitions. [2024-12-02 06:31:20,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 06:31:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2108 transitions. [2024-12-02 06:31:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-12-02 06:31:20,128 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:20,128 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:20,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 06:31:20,129 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:20,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash -310316906, now seen corresponding path program 1 times [2024-12-02 06:31:20,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:20,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564407593] [2024-12-02 06:31:20,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:20,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-12-02 06:31:20,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:20,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564407593] [2024-12-02 06:31:20,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564407593] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:20,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216498909] [2024-12-02 06:31:20,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:20,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:20,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:20,965 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:20,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 06:31:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:21,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 06:31:21,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 226 proven. 65 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2024-12-02 06:31:21,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-12-02 06:31:22,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216498909] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:31:22,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:31:22,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 12] total 22 [2024-12-02 06:31:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822940493] [2024-12-02 06:31:22,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:22,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 06:31:22,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:22,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 06:31:22,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:31:22,440 INFO L87 Difference]: Start difference. First operand 1664 states and 2108 transitions. Second operand has 22 states, 21 states have (on average 12.952380952380953) internal successors, (272), 21 states have internal predecessors, (272), 13 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (49), 12 states have call predecessors, (49), 12 states have call successors, (49) [2024-12-02 06:31:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:26,400 INFO L93 Difference]: Finished difference Result 10221 states and 13749 transitions. [2024-12-02 06:31:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-12-02 06:31:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 12.952380952380953) internal successors, (272), 21 states have internal predecessors, (272), 13 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (49), 12 states have call predecessors, (49), 12 states have call successors, (49) Word has length 344 [2024-12-02 06:31:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:26,420 INFO L225 Difference]: With dead ends: 10221 [2024-12-02 06:31:26,420 INFO L226 Difference]: Without dead ends: 8930 [2024-12-02 06:31:26,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 697 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1776, Invalid=9996, Unknown=0, NotChecked=0, Total=11772 [2024-12-02 06:31:26,424 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 6525 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 1439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6525 SdHoareTripleChecker+Valid, 4893 SdHoareTripleChecker+Invalid, 3138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1439 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:26,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6525 Valid, 4893 Invalid, 3138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1439 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 06:31:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2024-12-02 06:31:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 3108. [2024-12-02 06:31:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 2600 states have (on average 1.2665384615384616) internal successors, (3293), 2620 states have internal predecessors, (3293), 354 states have call successors, (354), 153 states have call predecessors, (354), 153 states have return successors, (354), 334 states have call predecessors, (354), 354 states have call successors, (354) [2024-12-02 06:31:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4001 transitions. [2024-12-02 06:31:26,673 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4001 transitions. Word has length 344 [2024-12-02 06:31:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:26,674 INFO L471 AbstractCegarLoop]: Abstraction has 3108 states and 4001 transitions. [2024-12-02 06:31:26,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 12.952380952380953) internal successors, (272), 21 states have internal predecessors, (272), 13 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (49), 12 states have call predecessors, (49), 12 states have call successors, (49) [2024-12-02 06:31:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4001 transitions. [2024-12-02 06:31:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-12-02 06:31:26,679 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:26,679 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:26,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-12-02 06:31:26,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:26,880 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:26,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash -663405288, now seen corresponding path program 1 times [2024-12-02 06:31:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:26,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443464493] [2024-12-02 06:31:26,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:26,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2024-12-02 06:31:27,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:27,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443464493] [2024-12-02 06:31:27,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443464493] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:27,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:27,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:31:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190103816] [2024-12-02 06:31:27,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:27,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:31:27,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:27,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:31:27,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:27,163 INFO L87 Difference]: Start difference. First operand 3108 states and 4001 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 06:31:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:27,596 INFO L93 Difference]: Finished difference Result 6326 states and 8175 transitions. [2024-12-02 06:31:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 06:31:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 344 [2024-12-02 06:31:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:27,605 INFO L225 Difference]: With dead ends: 6326 [2024-12-02 06:31:27,605 INFO L226 Difference]: Without dead ends: 3730 [2024-12-02 06:31:27,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 06:31:27,609 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 156 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:27,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 2246 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:31:27,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2024-12-02 06:31:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3004. [2024-12-02 06:31:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2526 states have (on average 1.2553444180522566) internal successors, (3171), 2548 states have internal predecessors, (3171), 326 states have call successors, (326), 151 states have call predecessors, (326), 151 states have return successors, (326), 304 states have call predecessors, (326), 326 states have call successors, (326) [2024-12-02 06:31:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 3823 transitions. [2024-12-02 06:31:27,802 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 3823 transitions. Word has length 344 [2024-12-02 06:31:27,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:27,802 INFO L471 AbstractCegarLoop]: Abstraction has 3004 states and 3823 transitions. [2024-12-02 06:31:27,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 06:31:27,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 3823 transitions. [2024-12-02 06:31:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-12-02 06:31:27,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:27,806 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:27,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 06:31:27,806 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:27,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:27,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1074985956, now seen corresponding path program 1 times [2024-12-02 06:31:27,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:27,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342529406] [2024-12-02 06:31:27,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:27,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2024-12-02 06:31:28,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:28,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342529406] [2024-12-02 06:31:28,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342529406] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:28,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:28,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:31:28,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484384696] [2024-12-02 06:31:28,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:28,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:31:28,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:28,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:31:28,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:31:28,876 INFO L87 Difference]: Start difference. First operand 3004 states and 3823 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 06:31:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:29,243 INFO L93 Difference]: Finished difference Result 6246 states and 7975 transitions. [2024-12-02 06:31:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:31:29,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 345 [2024-12-02 06:31:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:29,256 INFO L225 Difference]: With dead ends: 6246 [2024-12-02 06:31:29,256 INFO L226 Difference]: Without dead ends: 3754 [2024-12-02 06:31:29,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:31:29,260 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 78 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:29,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1718 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:31:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2024-12-02 06:31:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3344. [2024-12-02 06:31:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2782 states have (on average 1.2534148094895758) internal successors, (3487), 2810 states have internal predecessors, (3487), 364 states have call successors, (364), 175 states have call predecessors, (364), 197 states have return successors, (392), 358 states have call predecessors, (392), 364 states have call successors, (392) [2024-12-02 06:31:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4243 transitions. [2024-12-02 06:31:29,482 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4243 transitions. Word has length 345 [2024-12-02 06:31:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:29,482 INFO L471 AbstractCegarLoop]: Abstraction has 3344 states and 4243 transitions. [2024-12-02 06:31:29,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 06:31:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4243 transitions. [2024-12-02 06:31:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-12-02 06:31:29,485 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:29,486 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:29,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 06:31:29,486 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:29,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash 878472451, now seen corresponding path program 1 times [2024-12-02 06:31:29,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:29,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182467410] [2024-12-02 06:31:29,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2024-12-02 06:31:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182467410] [2024-12-02 06:31:29,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182467410] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:31:29,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:31:29,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:31:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667447472] [2024-12-02 06:31:29,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:31:29,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:31:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:29,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:31:29,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:31:29,616 INFO L87 Difference]: Start difference. First operand 3344 states and 4243 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 06:31:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:29,849 INFO L93 Difference]: Finished difference Result 6737 states and 8535 transitions. [2024-12-02 06:31:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:31:29,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 345 [2024-12-02 06:31:29,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:29,860 INFO L225 Difference]: With dead ends: 6737 [2024-12-02 06:31:29,861 INFO L226 Difference]: Without dead ends: 3256 [2024-12-02 06:31:29,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:31:29,867 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 26 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:29,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 658 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:31:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2024-12-02 06:31:30,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3256. [2024-12-02 06:31:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 2716 states have (on average 1.223858615611193) internal successors, (3324), 2744 states have internal predecessors, (3324), 364 states have call successors, (364), 175 states have call predecessors, (364), 175 states have return successors, (364), 336 states have call predecessors, (364), 364 states have call successors, (364) [2024-12-02 06:31:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 4052 transitions. [2024-12-02 06:31:30,189 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 4052 transitions. Word has length 345 [2024-12-02 06:31:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:30,189 INFO L471 AbstractCegarLoop]: Abstraction has 3256 states and 4052 transitions. [2024-12-02 06:31:30,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-12-02 06:31:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 4052 transitions. [2024-12-02 06:31:30,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-12-02 06:31:30,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:30,196 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:31:30,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 06:31:30,196 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:30,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash -14518423, now seen corresponding path program 1 times [2024-12-02 06:31:30,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:30,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764857544] [2024-12-02 06:31:30,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2024-12-02 06:31:31,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764857544] [2024-12-02 06:31:31,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764857544] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468674012] [2024-12-02 06:31:31,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:31,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:31,203 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:31,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 06:31:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:31,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 06:31:31,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 275 proven. 63 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-12-02 06:31:32,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2024-12-02 06:31:32,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468674012] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:31:32,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:31:32,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 13] total 36 [2024-12-02 06:31:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445880300] [2024-12-02 06:31:32,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:32,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 06:31:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:32,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 06:31:32,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:31:32,673 INFO L87 Difference]: Start difference. First operand 3256 states and 4052 transitions. Second operand has 36 states, 35 states have (on average 9.2) internal successors, (322), 34 states have internal predecessors, (322), 16 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (60), 16 states have call predecessors, (60), 15 states have call successors, (60) [2024-12-02 06:31:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:46,825 INFO L93 Difference]: Finished difference Result 27590 states and 36396 transitions. [2024-12-02 06:31:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2024-12-02 06:31:46,826 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 9.2) internal successors, (322), 34 states have internal predecessors, (322), 16 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (60), 16 states have call predecessors, (60), 15 states have call successors, (60) Word has length 355 [2024-12-02 06:31:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:46,873 INFO L225 Difference]: With dead ends: 27590 [2024-12-02 06:31:46,874 INFO L226 Difference]: Without dead ends: 24882 [2024-12-02 06:31:46,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16254 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=4694, Invalid=40888, Unknown=0, NotChecked=0, Total=45582 [2024-12-02 06:31:46,889 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 4032 mSDsluCounter, 18060 mSDsCounter, 0 mSdLazyCounter, 8770 mSolverCounterSat, 1032 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4032 SdHoareTripleChecker+Valid, 19051 SdHoareTripleChecker+Invalid, 9802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1032 IncrementalHoareTripleChecker+Valid, 8770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:46,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4032 Valid, 19051 Invalid, 9802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1032 Valid, 8770 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-12-02 06:31:46,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24882 states. [2024-12-02 06:31:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24882 to 6269. [2024-12-02 06:31:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 5205 states have (on average 1.2428434197886646) internal successors, (6469), 5261 states have internal predecessors, (6469), 717 states have call successors, (717), 346 states have call predecessors, (717), 346 states have return successors, (717), 661 states have call predecessors, (717), 717 states have call successors, (717) [2024-12-02 06:31:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 7903 transitions. [2024-12-02 06:31:47,735 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 7903 transitions. Word has length 355 [2024-12-02 06:31:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:47,735 INFO L471 AbstractCegarLoop]: Abstraction has 6269 states and 7903 transitions. [2024-12-02 06:31:47,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 9.2) internal successors, (322), 34 states have internal predecessors, (322), 16 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (60), 16 states have call predecessors, (60), 15 states have call successors, (60) [2024-12-02 06:31:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 7903 transitions. [2024-12-02 06:31:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-12-02 06:31:47,743 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:47,743 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:31:47,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 06:31:47,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-12-02 06:31:47,944 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:47,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash 805317834, now seen corresponding path program 1 times [2024-12-02 06:31:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:47,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904209029] [2024-12-02 06:31:47,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2024-12-02 06:31:48,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:48,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904209029] [2024-12-02 06:31:48,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904209029] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:48,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406436505] [2024-12-02 06:31:48,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:48,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:48,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:48,768 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:48,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 06:31:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:49,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 06:31:49,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 248 proven. 93 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-12-02 06:31:49,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 14 proven. 27 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2024-12-02 06:31:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406436505] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:31:50,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:31:50,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 39 [2024-12-02 06:31:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843855128] [2024-12-02 06:31:50,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:50,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 06:31:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:50,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 06:31:50,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 06:31:50,586 INFO L87 Difference]: Start difference. First operand 6269 states and 7903 transitions. Second operand has 39 states, 38 states have (on average 9.026315789473685) internal successors, (343), 36 states have internal predecessors, (343), 14 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (61), 15 states have call predecessors, (61), 13 states have call successors, (61) [2024-12-02 06:32:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:28,366 INFO L93 Difference]: Finished difference Result 129921 states and 173990 transitions. [2024-12-02 06:32:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 614 states. [2024-12-02 06:32:28,366 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 9.026315789473685) internal successors, (343), 36 states have internal predecessors, (343), 14 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (61), 15 states have call predecessors, (61), 13 states have call successors, (61) Word has length 356 [2024-12-02 06:32:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:28,679 INFO L225 Difference]: With dead ends: 129921 [2024-12-02 06:32:28,680 INFO L226 Difference]: Without dead ends: 124458 [2024-12-02 06:32:28,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1380 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 646 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192217 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=23272, Invalid=395984, Unknown=0, NotChecked=0, Total=419256 [2024-12-02 06:32:28,776 INFO L435 NwaCegarLoop]: 1039 mSDtfsCounter, 13792 mSDsluCounter, 17434 mSDsCounter, 0 mSdLazyCounter, 11574 mSolverCounterSat, 4030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13800 SdHoareTripleChecker+Valid, 18473 SdHoareTripleChecker+Invalid, 15604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4030 IncrementalHoareTripleChecker+Valid, 11574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:28,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13800 Valid, 18473 Invalid, 15604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4030 Valid, 11574 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-12-02 06:32:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124458 states. [2024-12-02 06:32:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124458 to 13979. [2024-12-02 06:32:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13979 states, 11351 states have (on average 1.2358382521363755) internal successors, (14028), 11494 states have internal predecessors, (14028), 1791 states have call successors, (1791), 836 states have call predecessors, (1791), 836 states have return successors, (1791), 1648 states have call predecessors, (1791), 1791 states have call successors, (1791) [2024-12-02 06:32:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13979 states to 13979 states and 17610 transitions. [2024-12-02 06:32:31,481 INFO L78 Accepts]: Start accepts. Automaton has 13979 states and 17610 transitions. Word has length 356 [2024-12-02 06:32:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:31,482 INFO L471 AbstractCegarLoop]: Abstraction has 13979 states and 17610 transitions. [2024-12-02 06:32:31,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 9.026315789473685) internal successors, (343), 36 states have internal predecessors, (343), 14 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (61), 15 states have call predecessors, (61), 13 states have call successors, (61) [2024-12-02 06:32:31,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13979 states and 17610 transitions. [2024-12-02 06:32:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-12-02 06:32:31,499 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:31,499 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:31,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 06:32:31,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-12-02 06:32:31,699 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:31,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1276478711, now seen corresponding path program 1 times [2024-12-02 06:32:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:31,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949316831] [2024-12-02 06:32:31,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:31,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2024-12-02 06:32:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:31,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949316831] [2024-12-02 06:32:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949316831] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:31,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:32:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225648448] [2024-12-02 06:32:31,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:31,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:32:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:31,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:32:31,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:32:31,958 INFO L87 Difference]: Start difference. First operand 13979 states and 17610 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 06:32:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:35,443 INFO L93 Difference]: Finished difference Result 31609 states and 40029 transitions. [2024-12-02 06:32:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 06:32:35,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 356 [2024-12-02 06:32:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:35,480 INFO L225 Difference]: With dead ends: 31609 [2024-12-02 06:32:35,480 INFO L226 Difference]: Without dead ends: 18869 [2024-12-02 06:32:35,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:32:35,500 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 285 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:35,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 2995 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:32:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18869 states. [2024-12-02 06:32:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18869 to 12881. [2024-12-02 06:32:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12881 states, 10523 states have (on average 1.2372897462700752) internal successors, (13020), 10648 states have internal predecessors, (13020), 1611 states have call successors, (1611), 746 states have call predecessors, (1611), 746 states have return successors, (1611), 1486 states have call predecessors, (1611), 1611 states have call successors, (1611) [2024-12-02 06:32:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12881 states to 12881 states and 16242 transitions. [2024-12-02 06:32:37,159 INFO L78 Accepts]: Start accepts. Automaton has 12881 states and 16242 transitions. Word has length 356 [2024-12-02 06:32:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:37,160 INFO L471 AbstractCegarLoop]: Abstraction has 12881 states and 16242 transitions. [2024-12-02 06:32:37,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 06:32:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 12881 states and 16242 transitions. [2024-12-02 06:32:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-12-02 06:32:37,176 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:37,176 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:37,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-12-02 06:32:37,176 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:37,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1622769460, now seen corresponding path program 1 times [2024-12-02 06:32:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:37,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248143699] [2024-12-02 06:32:37,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:37,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2024-12-02 06:32:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248143699] [2024-12-02 06:32:37,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248143699] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:37,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:37,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:32:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756983107] [2024-12-02 06:32:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:37,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:37,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:37,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:37,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:37,369 INFO L87 Difference]: Start difference. First operand 12881 states and 16242 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 06:32:38,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:38,777 INFO L93 Difference]: Finished difference Result 23731 states and 29955 transitions. [2024-12-02 06:32:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:38,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 356 [2024-12-02 06:32:38,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:38,804 INFO L225 Difference]: With dead ends: 23731 [2024-12-02 06:32:38,804 INFO L226 Difference]: Without dead ends: 11553 [2024-12-02 06:32:38,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:38,818 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:38,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:32:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11553 states. [2024-12-02 06:32:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11553 to 11553. [2024-12-02 06:32:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11553 states, 9275 states have (on average 1.2252291105121293) internal successors, (11364), 9400 states have internal predecessors, (11364), 1571 states have call successors, (1571), 706 states have call predecessors, (1571), 706 states have return successors, (1571), 1446 states have call predecessors, (1571), 1571 states have call successors, (1571) [2024-12-02 06:32:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11553 states to 11553 states and 14506 transitions. [2024-12-02 06:32:40,319 INFO L78 Accepts]: Start accepts. Automaton has 11553 states and 14506 transitions. Word has length 356 [2024-12-02 06:32:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:40,319 INFO L471 AbstractCegarLoop]: Abstraction has 11553 states and 14506 transitions. [2024-12-02 06:32:40,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 06:32:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 11553 states and 14506 transitions. [2024-12-02 06:32:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-12-02 06:32:40,332 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:40,332 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:40,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-12-02 06:32:40,332 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:40,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:40,333 INFO L85 PathProgramCache]: Analyzing trace with hash 885472400, now seen corresponding path program 1 times [2024-12-02 06:32:40,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:40,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797979203] [2024-12-02 06:32:40,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:40,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2024-12-02 06:32:40,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797979203] [2024-12-02 06:32:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797979203] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:32:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917005382] [2024-12-02 06:32:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:40,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:40,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:40,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:40,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:40,527 INFO L87 Difference]: Start difference. First operand 11553 states and 14506 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 06:32:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:42,082 INFO L93 Difference]: Finished difference Result 20636 states and 25953 transitions. [2024-12-02 06:32:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:42,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 357 [2024-12-02 06:32:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:42,111 INFO L225 Difference]: With dead ends: 20636 [2024-12-02 06:32:42,111 INFO L226 Difference]: Without dead ends: 9707 [2024-12-02 06:32:42,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:42,127 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:42,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 477 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:32:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2024-12-02 06:32:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 9707. [2024-12-02 06:32:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9707 states, 7699 states have (on average 1.2157423041953501) internal successors, (9360), 7811 states have internal predecessors, (9360), 1391 states have call successors, (1391), 616 states have call predecessors, (1391), 616 states have return successors, (1391), 1279 states have call predecessors, (1391), 1391 states have call successors, (1391) [2024-12-02 06:32:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9707 states to 9707 states and 12142 transitions. [2024-12-02 06:32:43,474 INFO L78 Accepts]: Start accepts. Automaton has 9707 states and 12142 transitions. Word has length 357 [2024-12-02 06:32:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:43,474 INFO L471 AbstractCegarLoop]: Abstraction has 9707 states and 12142 transitions. [2024-12-02 06:32:43,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 06:32:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 9707 states and 12142 transitions. [2024-12-02 06:32:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-12-02 06:32:43,486 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:43,486 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:43,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-12-02 06:32:43,486 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:43,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash -117412015, now seen corresponding path program 1 times [2024-12-02 06:32:43,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:43,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720643646] [2024-12-02 06:32:43,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2024-12-02 06:32:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:43,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720643646] [2024-12-02 06:32:43,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720643646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:43,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:32:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412650007] [2024-12-02 06:32:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:43,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:32:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:43,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:32:43,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:43,676 INFO L87 Difference]: Start difference. First operand 9707 states and 12142 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:32:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:44,703 INFO L93 Difference]: Finished difference Result 16652 states and 20880 transitions. [2024-12-02 06:32:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:32:44,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 358 [2024-12-02 06:32:44,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:44,724 INFO L225 Difference]: With dead ends: 16652 [2024-12-02 06:32:44,724 INFO L226 Difference]: Without dead ends: 7524 [2024-12-02 06:32:44,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:32:44,737 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:44,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 443 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:32:44,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7524 states. [2024-12-02 06:32:45,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7524 to 7524. [2024-12-02 06:32:45,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 5998 states have (on average 1.2140713571190396) internal successors, (7282), 6083 states have internal predecessors, (7282), 1049 states have call successors, (1049), 476 states have call predecessors, (1049), 476 states have return successors, (1049), 964 states have call predecessors, (1049), 1049 states have call successors, (1049) [2024-12-02 06:32:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 9380 transitions. [2024-12-02 06:32:45,741 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 9380 transitions. Word has length 358 [2024-12-02 06:32:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:45,742 INFO L471 AbstractCegarLoop]: Abstraction has 7524 states and 9380 transitions. [2024-12-02 06:32:45,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:32:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 9380 transitions. [2024-12-02 06:32:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-12-02 06:32:45,751 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:45,751 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:45,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-12-02 06:32:45,751 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:45,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash 645212080, now seen corresponding path program 1 times [2024-12-02 06:32:45,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:45,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891212187] [2024-12-02 06:32:45,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:45,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2024-12-02 06:32:46,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:46,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891212187] [2024-12-02 06:32:46,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891212187] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:32:46,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:32:46,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:32:46,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648115916] [2024-12-02 06:32:46,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:32:46,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:32:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:46,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:32:46,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:32:46,033 INFO L87 Difference]: Start difference. First operand 7524 states and 9380 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 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 06:32:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:47,504 INFO L93 Difference]: Finished difference Result 15181 states and 18974 transitions. [2024-12-02 06:32:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:32:47,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 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 361 [2024-12-02 06:32:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:47,527 INFO L225 Difference]: With dead ends: 15181 [2024-12-02 06:32:47,527 INFO L226 Difference]: Without dead ends: 8522 [2024-12-02 06:32:47,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:32:47,536 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 117 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:47,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1671 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:32:47,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8522 states. [2024-12-02 06:32:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8522 to 7727. [2024-12-02 06:32:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7727 states, 6145 states have (on average 1.213506916192026) internal successors, (7457), 6230 states have internal predecessors, (7457), 1091 states have call successors, (1091), 490 states have call predecessors, (1091), 490 states have return successors, (1091), 1006 states have call predecessors, (1091), 1091 states have call successors, (1091) [2024-12-02 06:32:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7727 states to 7727 states and 9639 transitions. [2024-12-02 06:32:48,762 INFO L78 Accepts]: Start accepts. Automaton has 7727 states and 9639 transitions. Word has length 361 [2024-12-02 06:32:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:48,763 INFO L471 AbstractCegarLoop]: Abstraction has 7727 states and 9639 transitions. [2024-12-02 06:32:48,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 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 06:32:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 9639 transitions. [2024-12-02 06:32:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-12-02 06:32:48,777 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:48,777 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:48,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-12-02 06:32:48,778 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:48,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash -960437341, now seen corresponding path program 1 times [2024-12-02 06:32:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458437951] [2024-12-02 06:32:48,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:48,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2024-12-02 06:32:49,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458437951] [2024-12-02 06:32:49,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458437951] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:32:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989406241] [2024-12-02 06:32:49,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:49,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:49,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:32:49,023 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:32:49,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 06:32:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:49,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 06:32:49,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:32:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 127 proven. 205 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-12-02 06:32:49,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:32:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-12-02 06:32:49,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989406241] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:32:49,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:32:49,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 12] total 19 [2024-12-02 06:32:49,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736209451] [2024-12-02 06:32:49,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:32:49,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 06:32:49,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:49,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 06:32:49,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:32:49,931 INFO L87 Difference]: Start difference. First operand 7727 states and 9639 transitions. Second operand has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 17 states have internal predecessors, (274), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) [2024-12-02 06:32:53,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:53,922 INFO L93 Difference]: Finished difference Result 24021 states and 30007 transitions. [2024-12-02 06:32:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-12-02 06:32:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 17 states have internal predecessors, (274), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) Word has length 361 [2024-12-02 06:32:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:53,957 INFO L225 Difference]: With dead ends: 24021 [2024-12-02 06:32:53,958 INFO L226 Difference]: Without dead ends: 17159 [2024-12-02 06:32:53,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 712 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=3178, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 06:32:53,968 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 1001 mSDsluCounter, 7169 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 7737 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:53,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 7737 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 06:32:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17159 states. [2024-12-02 06:32:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17159 to 13964. [2024-12-02 06:32:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13964 states, 11148 states have (on average 1.208557588805167) internal successors, (13473), 11290 states have internal predecessors, (13473), 1928 states have call successors, (1928), 887 states have call predecessors, (1928), 887 states have return successors, (1928), 1786 states have call predecessors, (1928), 1928 states have call successors, (1928) [2024-12-02 06:32:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13964 states to 13964 states and 17329 transitions. [2024-12-02 06:32:56,052 INFO L78 Accepts]: Start accepts. Automaton has 13964 states and 17329 transitions. Word has length 361 [2024-12-02 06:32:56,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:56,052 INFO L471 AbstractCegarLoop]: Abstraction has 13964 states and 17329 transitions. [2024-12-02 06:32:56,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 17 states have internal predecessors, (274), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) [2024-12-02 06:32:56,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13964 states and 17329 transitions. [2024-12-02 06:32:56,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-12-02 06:32:56,063 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:56,063 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:56,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 06:32:56,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-12-02 06:32:56,264 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:56,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1701997546, now seen corresponding path program 1 times [2024-12-02 06:32:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354828841] [2024-12-02 06:32:56,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:56,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-12-02 06:32:56,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354828841] [2024-12-02 06:32:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354828841] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:32:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957292870] [2024-12-02 06:32:56,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:56,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:56,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:32:56,489 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:32:56,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 06:32:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:56,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 06:32:56,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:32:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 327 proven. 60 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2024-12-02 06:32:57,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:32:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 58 proven. 52 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-12-02 06:32:57,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957292870] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:32:57,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:32:57,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 14] total 33 [2024-12-02 06:32:57,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634177598] [2024-12-02 06:32:57,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:32:57,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 06:32:57,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:57,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 06:32:57,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 06:32:57,737 INFO L87 Difference]: Start difference. First operand 13964 states and 17329 transitions. Second operand has 33 states, 33 states have (on average 8.696969696969697) internal successors, (287), 28 states have internal predecessors, (287), 7 states have call successors, (49), 8 states have call predecessors, (49), 15 states have return successors, (50), 12 states have call predecessors, (50), 7 states have call successors, (50) [2024-12-02 06:33:14,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:14,274 INFO L93 Difference]: Finished difference Result 40017 states and 49128 transitions. [2024-12-02 06:33:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2024-12-02 06:33:14,275 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.696969696969697) internal successors, (287), 28 states have internal predecessors, (287), 7 states have call successors, (49), 8 states have call predecessors, (49), 15 states have return successors, (50), 12 states have call predecessors, (50), 7 states have call successors, (50) Word has length 365 [2024-12-02 06:33:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:14,334 INFO L225 Difference]: With dead ends: 40017 [2024-12-02 06:33:14,334 INFO L226 Difference]: Without dead ends: 29627 [2024-12-02 06:33:14,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26014 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=6124, Invalid=61736, Unknown=0, NotChecked=0, Total=67860 [2024-12-02 06:33:14,353 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 3568 mSDsluCounter, 10276 mSDsCounter, 0 mSdLazyCounter, 7621 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3570 SdHoareTripleChecker+Valid, 10872 SdHoareTripleChecker+Invalid, 8820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 7621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:14,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3570 Valid, 10872 Invalid, 8820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1199 Valid, 7621 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 06:33:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29627 states. [2024-12-02 06:33:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29627 to 14691. [2024-12-02 06:33:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14691 states, 11819 states have (on average 1.1907098739318047) internal successors, (14073), 11955 states have internal predecessors, (14073), 1895 states have call successors, (1895), 976 states have call predecessors, (1895), 976 states have return successors, (1895), 1759 states have call predecessors, (1895), 1895 states have call successors, (1895) [2024-12-02 06:33:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14691 states to 14691 states and 17863 transitions. [2024-12-02 06:33:17,031 INFO L78 Accepts]: Start accepts. Automaton has 14691 states and 17863 transitions. Word has length 365 [2024-12-02 06:33:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:17,031 INFO L471 AbstractCegarLoop]: Abstraction has 14691 states and 17863 transitions. [2024-12-02 06:33:17,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.696969696969697) internal successors, (287), 28 states have internal predecessors, (287), 7 states have call successors, (49), 8 states have call predecessors, (49), 15 states have return successors, (50), 12 states have call predecessors, (50), 7 states have call successors, (50) [2024-12-02 06:33:17,032 INFO L276 IsEmpty]: Start isEmpty. Operand 14691 states and 17863 transitions. [2024-12-02 06:33:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-12-02 06:33:17,042 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:17,042 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:17,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 06:33:17,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-12-02 06:33:17,242 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:17,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:17,243 INFO L85 PathProgramCache]: Analyzing trace with hash -572926366, now seen corresponding path program 1 times [2024-12-02 06:33:17,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:17,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389177535] [2024-12-02 06:33:17,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:17,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 73 proven. 28 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2024-12-02 06:33:18,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:18,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389177535] [2024-12-02 06:33:18,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389177535] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:18,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656633030] [2024-12-02 06:33:18,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:18,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:18,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:18,172 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:18,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 06:33:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:18,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 06:33:18,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 304 proven. 72 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-12-02 06:33:18,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:33:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2024-12-02 06:33:19,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656633030] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:33:19,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:33:19,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 35 [2024-12-02 06:33:19,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417942788] [2024-12-02 06:33:19,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:33:19,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 06:33:19,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:19,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 06:33:19,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 06:33:19,358 INFO L87 Difference]: Start difference. First operand 14691 states and 17863 transitions. Second operand has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 29 states have internal predecessors, (317), 8 states have call successors, (52), 9 states have call predecessors, (52), 17 states have return successors, (53), 14 states have call predecessors, (53), 8 states have call successors, (53) [2024-12-02 06:33:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:40,900 INFO L93 Difference]: Finished difference Result 45186 states and 53689 transitions. [2024-12-02 06:33:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2024-12-02 06:33:40,900 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 29 states have internal predecessors, (317), 8 states have call successors, (52), 9 states have call predecessors, (52), 17 states have return successors, (53), 14 states have call predecessors, (53), 8 states have call successors, (53) Word has length 368 [2024-12-02 06:33:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:40,966 INFO L225 Difference]: With dead ends: 45186 [2024-12-02 06:33:40,966 INFO L226 Difference]: Without dead ends: 33891 [2024-12-02 06:33:40,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28865 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=7839, Invalid=67511, Unknown=0, NotChecked=0, Total=75350 [2024-12-02 06:33:40,987 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 3005 mSDsluCounter, 13879 mSDsCounter, 0 mSdLazyCounter, 8206 mSolverCounterSat, 1088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 14713 SdHoareTripleChecker+Invalid, 9294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1088 IncrementalHoareTripleChecker+Valid, 8206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:40,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 14713 Invalid, 9294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1088 Valid, 8206 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-12-02 06:33:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33891 states. [2024-12-02 06:33:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33891 to 10635. [2024-12-02 06:33:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10635 states, 8761 states have (on average 1.1760073051021573) internal successors, (10303), 8831 states have internal predecessors, (10303), 1164 states have call successors, (1164), 709 states have call predecessors, (1164), 709 states have return successors, (1164), 1094 states have call predecessors, (1164), 1164 states have call successors, (1164) [2024-12-02 06:33:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10635 states to 10635 states and 12631 transitions. [2024-12-02 06:33:43,598 INFO L78 Accepts]: Start accepts. Automaton has 10635 states and 12631 transitions. Word has length 368 [2024-12-02 06:33:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:43,598 INFO L471 AbstractCegarLoop]: Abstraction has 10635 states and 12631 transitions. [2024-12-02 06:33:43,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 29 states have internal predecessors, (317), 8 states have call successors, (52), 9 states have call predecessors, (52), 17 states have return successors, (53), 14 states have call predecessors, (53), 8 states have call successors, (53) [2024-12-02 06:33:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 10635 states and 12631 transitions. [2024-12-02 06:33:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-12-02 06:33:43,606 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:43,606 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:43,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 06:33:43,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:43,806 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:43,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:43,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1466229555, now seen corresponding path program 1 times [2024-12-02 06:33:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:43,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939603258] [2024-12-02 06:33:43,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:43,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-12-02 06:33:44,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:44,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939603258] [2024-12-02 06:33:44,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939603258] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:44,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:44,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:33:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070982591] [2024-12-02 06:33:44,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:44,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:33:44,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:44,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:33:44,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:33:44,053 INFO L87 Difference]: Start difference. First operand 10635 states and 12631 transitions. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 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 06:33:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:48,367 INFO L93 Difference]: Finished difference Result 20377 states and 24048 transitions. [2024-12-02 06:33:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:33:48,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 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 373 [2024-12-02 06:33:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:48,398 INFO L225 Difference]: With dead ends: 20377 [2024-12-02 06:33:48,398 INFO L226 Difference]: Without dead ends: 15106 [2024-12-02 06:33:48,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:33:48,406 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 321 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:48,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 2504 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:33:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15106 states. [2024-12-02 06:33:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15106 to 10551. [2024-12-02 06:33:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10551 states, 8691 states have (on average 1.1725923369002416) internal successors, (10191), 8761 states have internal predecessors, (10191), 1150 states have call successors, (1150), 709 states have call predecessors, (1150), 709 states have return successors, (1150), 1080 states have call predecessors, (1150), 1150 states have call successors, (1150) [2024-12-02 06:33:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10551 states to 10551 states and 12491 transitions. [2024-12-02 06:33:50,877 INFO L78 Accepts]: Start accepts. Automaton has 10551 states and 12491 transitions. Word has length 373 [2024-12-02 06:33:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:50,877 INFO L471 AbstractCegarLoop]: Abstraction has 10551 states and 12491 transitions. [2024-12-02 06:33:50,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 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 06:33:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 10551 states and 12491 transitions. [2024-12-02 06:33:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-12-02 06:33:50,884 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:50,884 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:50,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-12-02 06:33:50,884 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:50,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:50,885 INFO L85 PathProgramCache]: Analyzing trace with hash -549243690, now seen corresponding path program 1 times [2024-12-02 06:33:50,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:50,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594304597] [2024-12-02 06:33:50,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:50,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2024-12-02 06:33:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:50,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594304597] [2024-12-02 06:33:50,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594304597] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:50,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:50,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771474661] [2024-12-02 06:33:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:50,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:50,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:50,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:50,984 INFO L87 Difference]: Start difference. First operand 10551 states and 12491 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:33:54,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:54,331 INFO L93 Difference]: Finished difference Result 18310 states and 21534 transitions. [2024-12-02 06:33:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:54,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 374 [2024-12-02 06:33:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:54,361 INFO L225 Difference]: With dead ends: 18310 [2024-12-02 06:33:54,362 INFO L226 Difference]: Without dead ends: 13116 [2024-12-02 06:33:54,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:54,370 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 124 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:54,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 531 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13116 states. [2024-12-02 06:33:56,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13116 to 10523. [2024-12-02 06:33:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10523 states, 8663 states have (on average 1.1650698372388317) internal successors, (10093), 8733 states have internal predecessors, (10093), 1150 states have call successors, (1150), 709 states have call predecessors, (1150), 709 states have return successors, (1150), 1080 states have call predecessors, (1150), 1150 states have call successors, (1150) [2024-12-02 06:33:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10523 states to 10523 states and 12393 transitions. [2024-12-02 06:33:56,858 INFO L78 Accepts]: Start accepts. Automaton has 10523 states and 12393 transitions. Word has length 374 [2024-12-02 06:33:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:56,859 INFO L471 AbstractCegarLoop]: Abstraction has 10523 states and 12393 transitions. [2024-12-02 06:33:56,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:33:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 10523 states and 12393 transitions. [2024-12-02 06:33:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-12-02 06:33:56,866 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:56,866 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:56,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-12-02 06:33:56,866 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:56,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash 501425866, now seen corresponding path program 1 times [2024-12-02 06:33:56,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:56,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223961616] [2024-12-02 06:33:56,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:56,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-12-02 06:33:57,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:57,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223961616] [2024-12-02 06:33:57,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223961616] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:57,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570714089] [2024-12-02 06:33:57,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:57,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:57,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:57,098 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:57,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 06:33:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:57,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 06:33:57,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 236 proven. 10 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-12-02 06:33:57,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:33:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-12-02 06:33:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570714089] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:33:57,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:33:57,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 21 [2024-12-02 06:33:57,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473496477] [2024-12-02 06:33:57,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:33:57,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 06:33:57,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:57,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 06:33:57,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:33:57,677 INFO L87 Difference]: Start difference. First operand 10523 states and 12393 transitions. Second operand has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 17 states have internal predecessors, (185), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2024-12-02 06:34:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:03,359 INFO L93 Difference]: Finished difference Result 22265 states and 26180 transitions. [2024-12-02 06:34:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:34:03,360 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 17 states have internal predecessors, (185), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) Word has length 375 [2024-12-02 06:34:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:03,394 INFO L225 Difference]: With dead ends: 22265 [2024-12-02 06:34:03,394 INFO L226 Difference]: Without dead ends: 16896 [2024-12-02 06:34:03,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:34:03,403 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 779 mSDsluCounter, 4870 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:03,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 5259 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 06:34:03,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16896 states. [2024-12-02 06:34:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16896 to 10432. [2024-12-02 06:34:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10432 states, 8586 states have (on average 1.1567668297228046) internal successors, (9932), 8656 states have internal predecessors, (9932), 1136 states have call successors, (1136), 709 states have call predecessors, (1136), 709 states have return successors, (1136), 1066 states have call predecessors, (1136), 1136 states have call successors, (1136) [2024-12-02 06:34:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 12204 transitions. [2024-12-02 06:34:05,898 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 12204 transitions. Word has length 375 [2024-12-02 06:34:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:05,898 INFO L471 AbstractCegarLoop]: Abstraction has 10432 states and 12204 transitions. [2024-12-02 06:34:05,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 17 states have internal predecessors, (185), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2024-12-02 06:34:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 12204 transitions. [2024-12-02 06:34:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-12-02 06:34:05,906 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:05,906 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:05,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 06:34:06,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da71058e-695f-441e-8cb8-5c5d84e087ef/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-12-02 06:34:06,107 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:06,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:06,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1492718840, now seen corresponding path program 1 times [2024-12-02 06:34:06,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:06,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611589389] [2024-12-02 06:34:06,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:06,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-12-02 06:34:06,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:06,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611589389] [2024-12-02 06:34:06,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611589389] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:06,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:06,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:34:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522675421] [2024-12-02 06:34:06,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:06,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:34:06,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:06,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:34:06,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:34:06,345 INFO L87 Difference]: Start difference. First operand 10432 states and 12204 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 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 06:34:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:10,392 INFO L93 Difference]: Finished difference Result 18802 states and 21920 transitions. [2024-12-02 06:34:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 06:34:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 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 375 [2024-12-02 06:34:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:10,422 INFO L225 Difference]: With dead ends: 18802 [2024-12-02 06:34:10,422 INFO L226 Difference]: Without dead ends: 13811 [2024-12-02 06:34:10,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:34:10,429 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 333 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:10,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 2288 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:34:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13811 states. [2024-12-02 06:34:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13811 to 10404. [2024-12-02 06:34:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10404 states, 8558 states have (on average 1.1556438420191633) internal successors, (9890), 8628 states have internal predecessors, (9890), 1136 states have call successors, (1136), 709 states have call predecessors, (1136), 709 states have return successors, (1136), 1066 states have call predecessors, (1136), 1136 states have call successors, (1136) [2024-12-02 06:34:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10404 states to 10404 states and 12162 transitions. [2024-12-02 06:34:12,948 INFO L78 Accepts]: Start accepts. Automaton has 10404 states and 12162 transitions. Word has length 375 [2024-12-02 06:34:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:12,948 INFO L471 AbstractCegarLoop]: Abstraction has 10404 states and 12162 transitions. [2024-12-02 06:34:12,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 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 06:34:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10404 states and 12162 transitions. [2024-12-02 06:34:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-12-02 06:34:12,955 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:12,956 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:12,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-12-02 06:34:12,956 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:12,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:12,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1885745850, now seen corresponding path program 1 times [2024-12-02 06:34:12,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:12,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556537942] [2024-12-02 06:34:12,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:12,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2024-12-02 06:34:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556537942] [2024-12-02 06:34:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556537942] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:13,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:13,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:34:13,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674527264] [2024-12-02 06:34:13,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:13,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:34:13,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:13,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:34:13,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:34:13,135 INFO L87 Difference]: Start difference. First operand 10404 states and 12162 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 06:34:15,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:15,600 INFO L93 Difference]: Finished difference Result 15556 states and 18257 transitions. [2024-12-02 06:34:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:34:15,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 375 [2024-12-02 06:34:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:15,627 INFO L225 Difference]: With dead ends: 15556 [2024-12-02 06:34:15,628 INFO L226 Difference]: Without dead ends: 10425 [2024-12-02 06:34:15,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:34:15,635 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:15,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 653 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:34:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10425 states. [2024-12-02 06:34:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10425 to 10376. [2024-12-02 06:34:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10376 states, 8530 states have (on average 1.1528722157092615) internal successors, (9834), 8600 states have internal predecessors, (9834), 1136 states have call successors, (1136), 709 states have call predecessors, (1136), 709 states have return successors, (1136), 1066 states have call predecessors, (1136), 1136 states have call successors, (1136) [2024-12-02 06:34:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10376 states to 10376 states and 12106 transitions. [2024-12-02 06:34:18,156 INFO L78 Accepts]: Start accepts. Automaton has 10376 states and 12106 transitions. Word has length 375 [2024-12-02 06:34:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:18,156 INFO L471 AbstractCegarLoop]: Abstraction has 10376 states and 12106 transitions. [2024-12-02 06:34:18,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 06:34:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 10376 states and 12106 transitions. [2024-12-02 06:34:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-12-02 06:34:18,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:18,164 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:18,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-12-02 06:34:18,164 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:18,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 632834301, now seen corresponding path program 1 times [2024-12-02 06:34:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:18,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716878148] [2024-12-02 06:34:18,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-12-02 06:34:18,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716878148] [2024-12-02 06:34:18,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716878148] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:18,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:18,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:34:18,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375615075] [2024-12-02 06:34:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:18,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:34:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:18,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:34:18,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:34:18,461 INFO L87 Difference]: Start difference. First operand 10376 states and 12106 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 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 06:34:22,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:22,892 INFO L93 Difference]: Finished difference Result 19072 states and 22252 transitions. [2024-12-02 06:34:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:34:22,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 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 375 [2024-12-02 06:34:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:22,907 INFO L225 Difference]: With dead ends: 19072 [2024-12-02 06:34:22,907 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 06:34:22,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:34:22,921 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 241 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:22,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 3043 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:34:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 06:34:22,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 06:34:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:34:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 06:34:22,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 375 [2024-12-02 06:34:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:22,933 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 06:34:22,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 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 06:34:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 06:34:22,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 06:34:22,936 INFO L782 garLoopResultBuilder]: Registering result SAFE for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 06:34:22,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-12-02 06:34:22,939 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:22,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.