./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.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_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:39:41,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:39:41,560 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:39:41,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:39:41,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:39:41,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:39:41,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:39:41,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:39:41,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:39:41,619 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:39:41,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:39:41,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:39:41,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:39:41,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:39:41,621 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:39:41,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:39:41,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:39:41,622 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:39:41,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:39:41,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:39:41,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:39:41,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:39:41,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:39:41,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:39:41,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:39:41,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:39:41,624 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:39:41,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:39:41,624 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:39:41,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:39:41,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:39:41,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:39:41,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:41,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:39:41,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:39:41,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:39:41,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:39:41,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:41,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:39:41,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:39:41,627 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_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 [2024-11-28 03:39:41,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:39:41,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:39:41,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:39:41,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:39:41,983 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:39:41,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2024-11-28 03:39:45,150 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/data/7f266132b/3bddd9e060c7417a85f792e65f464ee3/FLAG06d57c9b9 [2024-11-28 03:39:45,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:39:45,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2024-11-28 03:39:45,532 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/data/7f266132b/3bddd9e060c7417a85f792e65f464ee3/FLAG06d57c9b9 [2024-11-28 03:39:45,570 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/data/7f266132b/3bddd9e060c7417a85f792e65f464ee3 [2024-11-28 03:39:45,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:39:45,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:39:45,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:39:45,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:39:45,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:39:45,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:45" (1/1) ... [2024-11-28 03:39:45,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b530bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:45, skipping insertion in model container [2024-11-28 03:39:45,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:45" (1/1) ... [2024-11-28 03:39:45,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:39:45,861 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_dad77785-4326-4fdd-b7d4-98960d151c67/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2024-11-28 03:39:46,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:39:46,100 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:39:46,111 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_dad77785-4326-4fdd-b7d4-98960d151c67/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2024-11-28 03:39:46,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:39:46,215 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:39:46,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46 WrapperNode [2024-11-28 03:39:46,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:39:46,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:39:46,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:39:46,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:39:46,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,304 INFO L138 Inliner]: procedures = 50, calls = 65, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 811 [2024-11-28 03:39:46,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:39:46,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:39:46,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:39:46,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:39:46,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,343 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:39:46,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,368 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:39:46,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:39:46,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:39:46,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:39:46,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (1/1) ... [2024-11-28 03:39:46,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:46,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:46,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:39:46,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dad77785-4326-4fdd-b7d4-98960d151c67/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:39:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:39:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-28 03:39:46,495 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-28 03:39:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 03:39:46,495 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 03:39:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-28 03:39:46,495 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-28 03:39:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-28 03:39:46,495 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-28 03:39:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-28 03:39:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-28 03:39:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-28 03:39:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-28 03:39:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-28 03:39:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-28 03:39:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:39:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:39:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:39:46,644 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:39:46,646 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:39:48,038 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2024-11-28 03:39:48,038 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:39:48,066 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:39:48,071 INFO L312 CfgBuilder]: Removed 28 assume(true) statements. [2024-11-28 03:39:48,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:48 BoogieIcfgContainer [2024-11-28 03:39:48,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:39:48,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:39:48,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:39:48,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:39:48,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:39:45" (1/3) ... [2024-11-28 03:39:48,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf5bc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:48, skipping insertion in model container [2024-11-28 03:39:48,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:46" (2/3) ... [2024-11-28 03:39:48,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf5bc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:48, skipping insertion in model container [2024-11-28 03:39:48,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:48" (3/3) ... [2024-11-28 03:39:48,082 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-1.c [2024-11-28 03:39:48,104 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:39:48,106 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.11.cil-1.c that has 8 procedures, 363 locations, 1 initial locations, 14 loop locations, and 1 error locations. [2024-11-28 03:39:48,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:39:48,201 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;@2ab2b101, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:39:48,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:39:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 328 states have (on average 1.6646341463414633) internal successors, (546), 331 states have internal predecessors, (546), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 03:39:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:48,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:48,220 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:48,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:48,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1043514288, now seen corresponding path program 1 times [2024-11-28 03:39:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:48,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479735458] [2024-11-28 03:39:48,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479735458] [2024-11-28 03:39:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479735458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:39:48,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020698730] [2024-11-28 03:39:48,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:48,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:39:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:48,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:39:48,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:39:48,899 INFO L87 Difference]: Start difference. First operand has 363 states, 328 states have (on average 1.6646341463414633) internal successors, (546), 331 states have internal predecessors, (546), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:49,031 INFO L93 Difference]: Finished difference Result 716 states and 1187 transitions. [2024-11-28 03:39:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:39:49,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:39:49,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:49,048 INFO L225 Difference]: With dead ends: 716 [2024-11-28 03:39:49,048 INFO L226 Difference]: Without dead ends: 357 [2024-11-28 03:39:49,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:39:49,060 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 560 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:49,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 566 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:49,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-28 03:39:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-28 03:39:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 323 states have (on average 1.5820433436532508) internal successors, (511), 325 states have internal predecessors, (511), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 03:39:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 563 transitions. [2024-11-28 03:39:49,163 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 563 transitions. Word has length 165 [2024-11-28 03:39:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:49,164 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 563 transitions. [2024-11-28 03:39:49,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:49,165 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 563 transitions. [2024-11-28 03:39:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:49,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:49,173 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:49,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:39:49,174 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:49,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:49,175 INFO L85 PathProgramCache]: Analyzing trace with hash 62559474, now seen corresponding path program 1 times [2024-11-28 03:39:49,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:49,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572298206] [2024-11-28 03:39:49,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:49,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:49,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572298206] [2024-11-28 03:39:49,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572298206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:49,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:49,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:39:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864830538] [2024-11-28 03:39:49,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:49,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:39:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:49,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:39:49,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:39:49,434 INFO L87 Difference]: Start difference. First operand 357 states and 563 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:49,494 INFO L93 Difference]: Finished difference Result 698 states and 1099 transitions. [2024-11-28 03:39:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:39:49,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:39:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:49,500 INFO L225 Difference]: With dead ends: 698 [2024-11-28 03:39:49,500 INFO L226 Difference]: Without dead ends: 357 [2024-11-28 03:39:49,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:39:49,506 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 547 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:49,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 561 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:49,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-28 03:39:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-28 03:39:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 323 states have (on average 1.5789473684210527) internal successors, (510), 325 states have internal predecessors, (510), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 03:39:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 562 transitions. [2024-11-28 03:39:49,564 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 562 transitions. Word has length 165 [2024-11-28 03:39:49,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:49,566 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 562 transitions. [2024-11-28 03:39:49,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 562 transitions. [2024-11-28 03:39:49,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:49,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:49,574 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:49,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:39:49,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:49,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 327206964, now seen corresponding path program 1 times [2024-11-28 03:39:49,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:49,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891771024] [2024-11-28 03:39:49,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:50,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:50,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891771024] [2024-11-28 03:39:50,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891771024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:50,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:50,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:39:50,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408659314] [2024-11-28 03:39:50,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:50,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:39:50,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:50,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:39:50,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:39:50,009 INFO L87 Difference]: Start difference. First operand 357 states and 562 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:51,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:51,049 INFO L93 Difference]: Finished difference Result 1077 states and 1714 transitions. [2024-11-28 03:39:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:39:51,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:39:51,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:51,057 INFO L225 Difference]: With dead ends: 1077 [2024-11-28 03:39:51,057 INFO L226 Difference]: Without dead ends: 739 [2024-11-28 03:39:51,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:51,060 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 1077 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:51,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1552 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:39:51,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-11-28 03:39:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 710. [2024-11-28 03:39:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 649 states have (on average 1.5916795069337442) internal successors, (1033), 652 states have internal predecessors, (1033), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2024-11-28 03:39:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1126 transitions. [2024-11-28 03:39:51,123 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1126 transitions. Word has length 165 [2024-11-28 03:39:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:51,124 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 1126 transitions. [2024-11-28 03:39:51,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1126 transitions. [2024-11-28 03:39:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:51,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:51,127 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:51,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:39:51,127 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:51,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:51,128 INFO L85 PathProgramCache]: Analyzing trace with hash 913641008, now seen corresponding path program 1 times [2024-11-28 03:39:51,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:51,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923273921] [2024-11-28 03:39:51,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:51,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:51,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923273921] [2024-11-28 03:39:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923273921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:51,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:51,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053201008] [2024-11-28 03:39:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:51,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:51,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:51,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:51,588 INFO L87 Difference]: Start difference. First operand 710 states and 1126 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:52,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:52,974 INFO L93 Difference]: Finished difference Result 1854 states and 2975 transitions. [2024-11-28 03:39:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:52,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:39:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:52,987 INFO L225 Difference]: With dead ends: 1854 [2024-11-28 03:39:52,987 INFO L226 Difference]: Without dead ends: 1163 [2024-11-28 03:39:52,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:52,993 INFO L435 NwaCegarLoop]: 740 mSDtfsCounter, 1084 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:52,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 3004 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:39:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2024-11-28 03:39:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1038. [2024-11-28 03:39:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 950 states have (on average 1.585263157894737) internal successors, (1506), 954 states have internal predecessors, (1506), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2024-11-28 03:39:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1642 transitions. [2024-11-28 03:39:53,092 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1642 transitions. Word has length 165 [2024-11-28 03:39:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:53,092 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1642 transitions. [2024-11-28 03:39:53,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1642 transitions. [2024-11-28 03:39:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:53,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:53,096 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:53,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:39:53,096 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:53,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1340195506, now seen corresponding path program 1 times [2024-11-28 03:39:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:53,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523747095] [2024-11-28 03:39:53,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:53,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:53,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523747095] [2024-11-28 03:39:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523747095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:53,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:53,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:53,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045517555] [2024-11-28 03:39:53,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:53,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:53,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:53,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:53,431 INFO L87 Difference]: Start difference. First operand 1038 states and 1642 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:54,749 INFO L93 Difference]: Finished difference Result 2902 states and 4650 transitions. [2024-11-28 03:39:54,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:54,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:39:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:54,762 INFO L225 Difference]: With dead ends: 2902 [2024-11-28 03:39:54,763 INFO L226 Difference]: Without dead ends: 1883 [2024-11-28 03:39:54,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:54,767 INFO L435 NwaCegarLoop]: 736 mSDtfsCounter, 1079 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:54,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 2988 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:39:54,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2024-11-28 03:39:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1739. [2024-11-28 03:39:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1595 states have (on average 1.5893416927899686) internal successors, (2535), 1603 states have internal predecessors, (2535), 107 states have call successors, (107), 31 states have call predecessors, (107), 36 states have return successors, (121), 108 states have call predecessors, (121), 105 states have call successors, (121) [2024-11-28 03:39:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2763 transitions. [2024-11-28 03:39:54,896 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2763 transitions. Word has length 165 [2024-11-28 03:39:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:54,897 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 2763 transitions. [2024-11-28 03:39:54,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2763 transitions. [2024-11-28 03:39:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:54,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:54,900 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:54,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:39:54,900 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:54,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash 799766000, now seen corresponding path program 1 times [2024-11-28 03:39:54,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:54,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003496197] [2024-11-28 03:39:54,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:55,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:55,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003496197] [2024-11-28 03:39:55,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003496197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:55,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:55,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:55,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887708544] [2024-11-28 03:39:55,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:55,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:55,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:55,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:55,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:55,171 INFO L87 Difference]: Start difference. First operand 1739 states and 2763 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:56,495 INFO L93 Difference]: Finished difference Result 5173 states and 8353 transitions. [2024-11-28 03:39:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:39:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:56,517 INFO L225 Difference]: With dead ends: 5173 [2024-11-28 03:39:56,517 INFO L226 Difference]: Without dead ends: 3453 [2024-11-28 03:39:56,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:56,526 INFO L435 NwaCegarLoop]: 733 mSDtfsCounter, 1074 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:56,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 2976 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:39:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2024-11-28 03:39:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3270. [2024-11-28 03:39:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3008 states have (on average 1.6060505319148937) internal successors, (4831), 3030 states have internal predecessors, (4831), 187 states have call successors, (187), 55 states have call predecessors, (187), 74 states have return successors, (249), 192 states have call predecessors, (249), 185 states have call successors, (249) [2024-11-28 03:39:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 5267 transitions. [2024-11-28 03:39:56,763 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 5267 transitions. Word has length 165 [2024-11-28 03:39:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:56,763 INFO L471 AbstractCegarLoop]: Abstraction has 3270 states and 5267 transitions. [2024-11-28 03:39:56,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 5267 transitions. [2024-11-28 03:39:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:56,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:56,771 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:56,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:39:56,772 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:56,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash 643785458, now seen corresponding path program 1 times [2024-11-28 03:39:56,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:56,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759741558] [2024-11-28 03:39:56,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:56,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:57,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759741558] [2024-11-28 03:39:57,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759741558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:57,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:57,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253583664] [2024-11-28 03:39:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:57,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:57,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:57,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:57,055 INFO L87 Difference]: Start difference. First operand 3270 states and 5267 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:58,495 INFO L93 Difference]: Finished difference Result 10212 states and 16795 transitions. [2024-11-28 03:39:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:58,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:39:58,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:58,535 INFO L225 Difference]: With dead ends: 10212 [2024-11-28 03:39:58,535 INFO L226 Difference]: Without dead ends: 6961 [2024-11-28 03:39:58,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:58,547 INFO L435 NwaCegarLoop]: 730 mSDtfsCounter, 1069 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:58,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 2964 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:39:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2024-11-28 03:39:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 6701. [2024-11-28 03:39:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6701 states, 6185 states have (on average 1.6334680679062248) internal successors, (10103), 6253 states have internal predecessors, (10103), 347 states have call successors, (347), 103 states have call predecessors, (347), 168 states have return successors, (601), 360 states have call predecessors, (601), 345 states have call successors, (601) [2024-11-28 03:39:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6701 states to 6701 states and 11051 transitions. [2024-11-28 03:39:58,927 INFO L78 Accepts]: Start accepts. Automaton has 6701 states and 11051 transitions. Word has length 165 [2024-11-28 03:39:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:58,928 INFO L471 AbstractCegarLoop]: Abstraction has 6701 states and 11051 transitions. [2024-11-28 03:39:58,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 6701 states and 11051 transitions. [2024-11-28 03:39:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:39:58,934 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:58,934 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:58,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:39:58,935 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:58,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:58,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1054395824, now seen corresponding path program 1 times [2024-11-28 03:39:58,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129235754] [2024-11-28 03:39:58,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:58,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:59,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129235754] [2024-11-28 03:39:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129235754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:59,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:59,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632557120] [2024-11-28 03:39:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:59,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:59,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:59,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:59,203 INFO L87 Difference]: Start difference. First operand 6701 states and 11051 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:00,978 INFO L93 Difference]: Finished difference Result 21707 states and 36765 transitions. [2024-11-28 03:40:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:40:00,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:40:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:01,081 INFO L225 Difference]: With dead ends: 21707 [2024-11-28 03:40:01,082 INFO L226 Difference]: Without dead ends: 15025 [2024-11-28 03:40:01,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:40:01,110 INFO L435 NwaCegarLoop]: 727 mSDtfsCounter, 1064 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:01,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 2952 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:40:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15025 states. [2024-11-28 03:40:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15025 to 14616. [2024-11-28 03:40:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14616 states, 13538 states have (on average 1.6681193677057173) internal successors, (22583), 13752 states have internal predecessors, (22583), 667 states have call successors, (667), 199 states have call predecessors, (667), 410 states have return successors, (1689), 696 states have call predecessors, (1689), 665 states have call successors, (1689) [2024-11-28 03:40:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14616 states to 14616 states and 24939 transitions. [2024-11-28 03:40:01,991 INFO L78 Accepts]: Start accepts. Automaton has 14616 states and 24939 transitions. Word has length 165 [2024-11-28 03:40:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:01,992 INFO L471 AbstractCegarLoop]: Abstraction has 14616 states and 24939 transitions. [2024-11-28 03:40:01,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 14616 states and 24939 transitions. [2024-11-28 03:40:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:40:02,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:02,012 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:02,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:40:02,012 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:02,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash -733473998, now seen corresponding path program 1 times [2024-11-28 03:40:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:02,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010406185] [2024-11-28 03:40:02,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:02,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:02,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010406185] [2024-11-28 03:40:02,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010406185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:02,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:02,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:40:02,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582524452] [2024-11-28 03:40:02,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:02,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:40:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:02,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:40:02,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:02,259 INFO L87 Difference]: Start difference. First operand 14616 states and 24939 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:04,702 INFO L93 Difference]: Finished difference Result 48456 states and 85471 transitions. [2024-11-28 03:40:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:40:04,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:40:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:04,959 INFO L225 Difference]: With dead ends: 48456 [2024-11-28 03:40:04,959 INFO L226 Difference]: Without dead ends: 33859 [2024-11-28 03:40:05,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:40:05,016 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 1056 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:05,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2926 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:40:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33859 states. [2024-11-28 03:40:06,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33859 to 33200. [2024-11-28 03:40:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33200 states, 30836 states have (on average 1.7041445064210663) internal successors, (52549), 31504 states have internal predecessors, (52549), 1307 states have call successors, (1307), 391 states have call predecessors, (1307), 1056 states have return successors, (5401), 1368 states have call predecessors, (5401), 1305 states have call successors, (5401) [2024-11-28 03:40:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33200 states to 33200 states and 59257 transitions. [2024-11-28 03:40:06,679 INFO L78 Accepts]: Start accepts. Automaton has 33200 states and 59257 transitions. Word has length 165 [2024-11-28 03:40:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:06,679 INFO L471 AbstractCegarLoop]: Abstraction has 33200 states and 59257 transitions. [2024-11-28 03:40:06,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 33200 states and 59257 transitions. [2024-11-28 03:40:06,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:40:06,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:06,694 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:06,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:40:06,695 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:06,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash -663826124, now seen corresponding path program 1 times [2024-11-28 03:40:06,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:06,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623800350] [2024-11-28 03:40:06,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:06,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:06,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:06,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623800350] [2024-11-28 03:40:06,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623800350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:06,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:06,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:40:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984855159] [2024-11-28 03:40:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:06,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:40:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:06,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:40:06,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:06,899 INFO L87 Difference]: Start difference. First operand 33200 states and 59257 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:11,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:11,152 INFO L93 Difference]: Finished difference Result 112736 states and 210135 transitions. [2024-11-28 03:40:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:40:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:40:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:11,579 INFO L225 Difference]: With dead ends: 112736 [2024-11-28 03:40:11,579 INFO L226 Difference]: Without dead ends: 79555 [2024-11-28 03:40:11,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:40:11,690 INFO L435 NwaCegarLoop]: 717 mSDtfsCounter, 1051 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:11,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 2914 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:40:11,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79555 states. [2024-11-28 03:40:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79555 to 78387. [2024-11-28 03:40:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78387 states, 72965 states have (on average 1.7409579935585555) internal successors, (127029), 75027 states have internal predecessors, (127029), 2587 states have call successors, (2587), 775 states have call predecessors, (2587), 2834 states have return successors, (18969), 2712 states have call predecessors, (18969), 2585 states have call successors, (18969) [2024-11-28 03:40:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78387 states to 78387 states and 148585 transitions. [2024-11-28 03:40:16,403 INFO L78 Accepts]: Start accepts. Automaton has 78387 states and 148585 transitions. Word has length 165 [2024-11-28 03:40:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:16,403 INFO L471 AbstractCegarLoop]: Abstraction has 78387 states and 148585 transitions. [2024-11-28 03:40:16,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 78387 states and 148585 transitions. [2024-11-28 03:40:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:40:16,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:16,431 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:16,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:40:16,432 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:16,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:16,432 INFO L85 PathProgramCache]: Analyzing trace with hash -245937422, now seen corresponding path program 1 times [2024-11-28 03:40:16,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:16,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921974334] [2024-11-28 03:40:16,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:16,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921974334] [2024-11-28 03:40:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921974334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:16,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:40:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504837251] [2024-11-28 03:40:16,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:16,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:40:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:16,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:40:16,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:16,665 INFO L87 Difference]: Start difference. First operand 78387 states and 148585 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:23,490 INFO L93 Difference]: Finished difference Result 271853 states and 545369 transitions. [2024-11-28 03:40:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:40:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 165 [2024-11-28 03:40:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:24,687 INFO L225 Difference]: With dead ends: 271853 [2024-11-28 03:40:24,687 INFO L226 Difference]: Without dead ends: 193485 [2024-11-28 03:40:24,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:40:24,976 INFO L435 NwaCegarLoop]: 714 mSDtfsCounter, 1046 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:24,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 2902 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:40:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193485 states. [2024-11-28 03:40:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193485 to 191360. [2024-11-28 03:40:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191360 states, 178364 states have (on average 1.7758572357650646) internal successors, (316749), 184672 states have internal predecessors, (316749), 5147 states have call successors, (5147), 1543 states have call predecessors, (5147), 7848 states have return successors, (70681), 5400 states have call predecessors, (70681), 5145 states have call successors, (70681) [2024-11-28 03:40:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191360 states to 191360 states and 392577 transitions. [2024-11-28 03:40:36,331 INFO L78 Accepts]: Start accepts. Automaton has 191360 states and 392577 transitions. Word has length 165 [2024-11-28 03:40:36,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:36,332 INFO L471 AbstractCegarLoop]: Abstraction has 191360 states and 392577 transitions. [2024-11-28 03:40:36,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 191360 states and 392577 transitions. [2024-11-28 03:40:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:40:36,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:36,398 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:36,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:40:36,398 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:36,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1153016180, now seen corresponding path program 1 times [2024-11-28 03:40:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:36,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642093494] [2024-11-28 03:40:36,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:36,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642093494] [2024-11-28 03:40:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642093494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:36,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:36,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:40:36,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845755041] [2024-11-28 03:40:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:36,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:40:36,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:36,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:40:36,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:36,681 INFO L87 Difference]: Start difference. First operand 191360 states and 392577 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)