./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/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_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/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 64bit --witnessprinter.graph.data.programhash 16f8726a4add15d0bf2494bd44888be53eb7bc01110882b6fc03ef148c6d9055 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:11:27,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:11:27,356 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 03:11:27,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:11:27,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:11:27,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:11:27,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:11:27,422 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:11:27,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:11:27,423 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:11:27,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:11:27,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:11:27,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:11:27,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:11:27,428 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:11:27,428 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:11:27,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:11:27,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:11:27,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:11:27,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:11:27,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:11:27,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:11:27,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:11:27,430 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:11:27,430 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:11:27,430 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:11:27,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:27,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:27,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:27,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:27,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:11:27,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:27,432 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:27,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:27,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:27,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:11:27,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:11:27,434 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:11:27,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:11:27,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:11:27,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:11:27,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:11:27,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:11:27,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:11:27,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:11:27,435 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_f45ae962-f8c1-4c1e-8c1d-841042546173/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16f8726a4add15d0bf2494bd44888be53eb7bc01110882b6fc03ef148c6d9055 [2024-11-28 03:11:27,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:11:27,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:11:27,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:11:27,850 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:11:27,851 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:11:27,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2024-11-28 03:11:31,416 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data/b7c561769/4a6388ab793c400aa03317b8dac815b9/FLAG7eeaf217d [2024-11-28 03:11:31,795 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:11:31,796 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2024-11-28 03:11:31,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data/b7c561769/4a6388ab793c400aa03317b8dac815b9/FLAG7eeaf217d [2024-11-28 03:11:31,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data/b7c561769/4a6388ab793c400aa03317b8dac815b9 [2024-11-28 03:11:31,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:11:31,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:11:31,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:11:31,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:11:31,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:11:31,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:31" (1/1) ... [2024-11-28 03:11:31,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@865b9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:31, skipping insertion in model container [2024-11-28 03:11:31,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:31" (1/1) ... [2024-11-28 03:11:31,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:11:32,030 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_f45ae962-f8c1-4c1e-8c1d-841042546173/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1248,1261] [2024-11-28 03:11:32,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:11:32,156 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:11:32,168 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_f45ae962-f8c1-4c1e-8c1d-841042546173/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1248,1261] [2024-11-28 03:11:32,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:11:32,244 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:11:32,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32 WrapperNode [2024-11-28 03:11:32,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:11:32,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:11:32,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:11:32,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:11:32,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,361 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 265 [2024-11-28 03:11:32,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:11:32,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:11:32,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:11:32,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:11:32,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,434 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 03:11:32,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,461 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:11:32,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:11:32,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:11:32,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:11:32,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2024-11-28 03:11:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:32,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:11:32,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:11:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:11:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:11:32,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:11:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:11:32,723 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:11:32,726 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:11:33,504 INFO L? ?]: Removed 152 outVars from TransFormulas that were not future-live. [2024-11-28 03:11:33,505 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:11:33,523 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:11:33,525 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:11:33,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:33 BoogieIcfgContainer [2024-11-28 03:11:33,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:11:33,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:11:33,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:11:33,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:11:33,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:31" (1/3) ... [2024-11-28 03:11:33,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62057b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:33, skipping insertion in model container [2024-11-28 03:11:33,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (2/3) ... [2024-11-28 03:11:33,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62057b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:33, skipping insertion in model container [2024-11-28 03:11:33,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:33" (3/3) ... [2024-11-28 03:11:33,542 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal.c [2024-11-28 03:11:33,559 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:11:33,561 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.diagonal.c that has 1 procedures, 72 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:11:33,630 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:11:33,646 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;@2462bfda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:11:33,646 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:11:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:33,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:11:33,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:33,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:33,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:33,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:33,666 INFO L85 PathProgramCache]: Analyzing trace with hash -829897697, now seen corresponding path program 1 times [2024-11-28 03:11:33,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:33,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040241054] [2024-11-28 03:11:33,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:33,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:34,337 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 03:11:34,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:34,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040241054] [2024-11-28 03:11:34,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040241054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:34,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:34,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:11:34,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990390269] [2024-11-28 03:11:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:34,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:11:34,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:34,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:11:34,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:11:34,380 INFO L87 Difference]: Start difference. First operand has 72 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:34,461 INFO L93 Difference]: Finished difference Result 133 states and 193 transitions. [2024-11-28 03:11:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:11:34,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:11:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:34,472 INFO L225 Difference]: With dead ends: 133 [2024-11-28 03:11:34,472 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 03:11:34,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:11:34,481 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:34,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:34,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 03:11:34,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 03:11:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4428571428571428) internal successors, (101), 70 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 101 transitions. [2024-11-28 03:11:34,522 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 101 transitions. Word has length 13 [2024-11-28 03:11:34,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:34,524 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 101 transitions. [2024-11-28 03:11:34,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 101 transitions. [2024-11-28 03:11:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:11:34,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:34,526 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:34,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:11:34,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:34,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash 44670374, now seen corresponding path program 1 times [2024-11-28 03:11:34,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774627814] [2024-11-28 03:11:34,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:34,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:34,786 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 03:11:34,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:34,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774627814] [2024-11-28 03:11:34,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774627814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:34,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:34,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:11:34,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214165095] [2024-11-28 03:11:34,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:34,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:11:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:34,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:11:34,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:11:34,789 INFO L87 Difference]: Start difference. First operand 71 states and 101 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:34,859 INFO L93 Difference]: Finished difference Result 134 states and 191 transitions. [2024-11-28 03:11:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:11:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 03:11:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:34,860 INFO L225 Difference]: With dead ends: 134 [2024-11-28 03:11:34,861 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 03:11:34,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:11:34,862 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:34,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 281 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:34,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 03:11:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-28 03:11:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 72 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2024-11-28 03:11:34,883 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 14 [2024-11-28 03:11:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:34,883 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2024-11-28 03:11:34,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2024-11-28 03:11:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:11:34,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:34,884 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:34,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:11:34,885 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:34,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash 286815704, now seen corresponding path program 1 times [2024-11-28 03:11:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:34,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729787194] [2024-11-28 03:11:34,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:35,392 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 03:11:35,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:35,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729787194] [2024-11-28 03:11:35,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729787194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:35,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:35,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:11:35,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586624703] [2024-11-28 03:11:35,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:35,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:11:35,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:35,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:11:35,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:35,397 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:35,581 INFO L93 Difference]: Finished difference Result 185 states and 262 transitions. [2024-11-28 03:11:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:11:35,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:11:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:35,585 INFO L225 Difference]: With dead ends: 185 [2024-11-28 03:11:35,585 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 03:11:35,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:35,586 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 76 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:35,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 420 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:35,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 03:11:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 75. [2024-11-28 03:11:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 74 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2024-11-28 03:11:35,605 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 15 [2024-11-28 03:11:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:35,606 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2024-11-28 03:11:35,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2024-11-28 03:11:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 03:11:35,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:35,608 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:35,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:11:35,608 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:35,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:35,609 INFO L85 PathProgramCache]: Analyzing trace with hash 668881346, now seen corresponding path program 1 times [2024-11-28 03:11:35,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:35,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115036291] [2024-11-28 03:11:35,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:35,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115036291] [2024-11-28 03:11:36,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115036291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:36,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:36,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:11:36,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775983907] [2024-11-28 03:11:36,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:36,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:11:36,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:36,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:11:36,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:36,772 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:36,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:36,800 INFO L93 Difference]: Finished difference Result 138 states and 194 transitions. [2024-11-28 03:11:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:11:36,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-28 03:11:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:36,802 INFO L225 Difference]: With dead ends: 138 [2024-11-28 03:11:36,802 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 03:11:36,803 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 03:11:36,803 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 2 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:36,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 185 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 03:11:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-28 03:11:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 74 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 104 transitions. [2024-11-28 03:11:36,821 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 104 transitions. Word has length 46 [2024-11-28 03:11:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:36,821 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 104 transitions. [2024-11-28 03:11:36,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 104 transitions. [2024-11-28 03:11:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:11:36,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:36,826 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:36,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:11:36,826 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:36,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:36,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1964229841, now seen corresponding path program 1 times [2024-11-28 03:11:36,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:36,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380752472] [2024-11-28 03:11:36,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:36,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380752472] [2024-11-28 03:11:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380752472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:37,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:37,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:11:37,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861479267] [2024-11-28 03:11:37,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:37,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:11:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:37,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:11:37,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:37,377 INFO L87 Difference]: Start difference. First operand 75 states and 104 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:37,646 INFO L93 Difference]: Finished difference Result 193 states and 270 transitions. [2024-11-28 03:11:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:11:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 03:11:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:37,650 INFO L225 Difference]: With dead ends: 193 [2024-11-28 03:11:37,651 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 03:11:37,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:11:37,655 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 59 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:37,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 583 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:11:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 03:11:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-28 03:11:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.394736842105263) internal successors, (106), 76 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 106 transitions. [2024-11-28 03:11:37,671 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 106 transitions. Word has length 47 [2024-11-28 03:11:37,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:37,672 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 106 transitions. [2024-11-28 03:11:37,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 106 transitions. [2024-11-28 03:11:37,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:11:37,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:37,677 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:37,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:11:37,677 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:37,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash -560587831, now seen corresponding path program 1 times [2024-11-28 03:11:37,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:37,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102245622] [2024-11-28 03:11:37,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:37,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:38,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:38,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102245622] [2024-11-28 03:11:38,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102245622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:38,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:38,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:11:38,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510995207] [2024-11-28 03:11:38,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:38,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:11:38,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:38,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:11:38,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:11:38,365 INFO L87 Difference]: Start difference. First operand 77 states and 106 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:38,488 INFO L93 Difference]: Finished difference Result 189 states and 262 transitions. [2024-11-28 03:11:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:11:38,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-28 03:11:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:38,494 INFO L225 Difference]: With dead ends: 189 [2024-11-28 03:11:38,494 INFO L226 Difference]: Without dead ends: 124 [2024-11-28 03:11:38,494 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 03:11:38,495 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 51 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:38,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 326 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-28 03:11:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2024-11-28 03:11:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.393162393162393) internal successors, (163), 117 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 163 transitions. [2024-11-28 03:11:38,509 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 163 transitions. Word has length 48 [2024-11-28 03:11:38,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:38,510 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 163 transitions. [2024-11-28 03:11:38,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 163 transitions. [2024-11-28 03:11:38,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:11:38,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:38,512 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:38,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:11:38,512 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:38,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -601951643, now seen corresponding path program 1 times [2024-11-28 03:11:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:38,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374408242] [2024-11-28 03:11:38,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374408242] [2024-11-28 03:11:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374408242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:39,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:11:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360964384] [2024-11-28 03:11:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:39,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:11:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:39,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:11:39,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:39,450 INFO L87 Difference]: Start difference. First operand 118 states and 163 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:39,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:39,655 INFO L93 Difference]: Finished difference Result 288 states and 398 transitions. [2024-11-28 03:11:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:11:39,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-28 03:11:39,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:39,658 INFO L225 Difference]: With dead ends: 288 [2024-11-28 03:11:39,658 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 03:11:39,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:11:39,659 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 108 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:39,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 733 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 03:11:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 152. [2024-11-28 03:11:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.3841059602649006) internal successors, (209), 151 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 209 transitions. [2024-11-28 03:11:39,672 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 209 transitions. Word has length 48 [2024-11-28 03:11:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:39,672 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 209 transitions. [2024-11-28 03:11:39,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 209 transitions. [2024-11-28 03:11:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 03:11:39,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:39,674 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:39,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:11:39,674 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:39,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1286858396, now seen corresponding path program 1 times [2024-11-28 03:11:39,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:39,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312490072] [2024-11-28 03:11:39,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:39,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:40,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:40,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312490072] [2024-11-28 03:11:40,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312490072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:40,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:40,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:11:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462016100] [2024-11-28 03:11:40,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:40,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:11:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:40,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:11:40,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:11:40,086 INFO L87 Difference]: Start difference. First operand 152 states and 209 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:40,148 INFO L93 Difference]: Finished difference Result 277 states and 382 transitions. [2024-11-28 03:11:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:11:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 03:11:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:40,150 INFO L225 Difference]: With dead ends: 277 [2024-11-28 03:11:40,150 INFO L226 Difference]: Without dead ends: 152 [2024-11-28 03:11:40,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:11:40,152 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 81 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:40,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 178 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-28 03:11:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-11-28 03:11:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.3708609271523178) internal successors, (207), 151 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:40,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 207 transitions. [2024-11-28 03:11:40,161 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 207 transitions. Word has length 49 [2024-11-28 03:11:40,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:40,162 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 207 transitions. [2024-11-28 03:11:40,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:40,162 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 207 transitions. [2024-11-28 03:11:40,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 03:11:40,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:40,163 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:40,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:11:40,164 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:40,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:40,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1600250730, now seen corresponding path program 1 times [2024-11-28 03:11:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:40,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418333246] [2024-11-28 03:11:40,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:40,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:40,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418333246] [2024-11-28 03:11:40,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418333246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703944889] [2024-11-28 03:11:40,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:40,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:40,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:40,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:40,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:11:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:41,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:11:41,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:41,733 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:41,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703944889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:41,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:11:41,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-28 03:11:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67430527] [2024-11-28 03:11:41,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:41,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:11:41,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:41,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:11:41,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:11:41,740 INFO L87 Difference]: Start difference. First operand 152 states and 207 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:42,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:42,159 INFO L93 Difference]: Finished difference Result 285 states and 390 transitions. [2024-11-28 03:11:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:11:42,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-28 03:11:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:42,161 INFO L225 Difference]: With dead ends: 285 [2024-11-28 03:11:42,162 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 03:11:42,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:11:42,163 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 60 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:42,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 205 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:11:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 03:11:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2024-11-28 03:11:42,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 154 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 209 transitions. [2024-11-28 03:11:42,183 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 209 transitions. Word has length 50 [2024-11-28 03:11:42,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:42,183 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 209 transitions. [2024-11-28 03:11:42,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 209 transitions. [2024-11-28 03:11:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:11:42,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:42,185 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:42,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:11:42,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:42,386 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:42,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash 749947663, now seen corresponding path program 1 times [2024-11-28 03:11:42,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:42,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113513310] [2024-11-28 03:11:42,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:42,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:43,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:43,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113513310] [2024-11-28 03:11:43,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113513310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:43,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:11:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856076230] [2024-11-28 03:11:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:43,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:11:43,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:43,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:11:43,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:43,290 INFO L87 Difference]: Start difference. First operand 155 states and 209 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:43,565 INFO L93 Difference]: Finished difference Result 279 states and 376 transitions. [2024-11-28 03:11:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:11:43,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-28 03:11:43,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:43,568 INFO L225 Difference]: With dead ends: 279 [2024-11-28 03:11:43,568 INFO L226 Difference]: Without dead ends: 191 [2024-11-28 03:11:43,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:43,569 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 55 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:43,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 419 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:11:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-28 03:11:43,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 172. [2024-11-28 03:11:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.345029239766082) internal successors, (230), 171 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 230 transitions. [2024-11-28 03:11:43,580 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 230 transitions. Word has length 51 [2024-11-28 03:11:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:43,581 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 230 transitions. [2024-11-28 03:11:43,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 230 transitions. [2024-11-28 03:11:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:11:43,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:43,583 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:43,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:11:43,584 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:43,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash -611613326, now seen corresponding path program 1 times [2024-11-28 03:11:43,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:43,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247238965] [2024-11-28 03:11:43,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:45,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:45,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247238965] [2024-11-28 03:11:45,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247238965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:45,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:45,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:11:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311298632] [2024-11-28 03:11:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:45,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:11:45,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:45,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:11:45,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:11:45,276 INFO L87 Difference]: Start difference. First operand 172 states and 230 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:45,728 INFO L93 Difference]: Finished difference Result 315 states and 421 transitions. [2024-11-28 03:11:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:11:45,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-28 03:11:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:45,731 INFO L225 Difference]: With dead ends: 315 [2024-11-28 03:11:45,731 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 03:11:45,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:11:45,733 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 103 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:45,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 426 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:11:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 03:11:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 192. [2024-11-28 03:11:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3350785340314135) internal successors, (255), 191 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 255 transitions. [2024-11-28 03:11:45,751 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 255 transitions. Word has length 51 [2024-11-28 03:11:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:45,751 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 255 transitions. [2024-11-28 03:11:45,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 255 transitions. [2024-11-28 03:11:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:11:45,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:45,753 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:45,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:11:45,753 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:45,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1979372487, now seen corresponding path program 1 times [2024-11-28 03:11:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042311205] [2024-11-28 03:11:45,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:46,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:46,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042311205] [2024-11-28 03:11:46,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042311205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:46,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:46,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:11:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793994739] [2024-11-28 03:11:46,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:46,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:11:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:46,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:11:46,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:46,720 INFO L87 Difference]: Start difference. First operand 192 states and 255 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:46,981 INFO L93 Difference]: Finished difference Result 302 states and 406 transitions. [2024-11-28 03:11:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:11:46,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-28 03:11:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:46,983 INFO L225 Difference]: With dead ends: 302 [2024-11-28 03:11:46,983 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 03:11:46,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:46,987 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 53 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:46,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 370 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:11:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 03:11:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 190. [2024-11-28 03:11:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 189 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 255 transitions. [2024-11-28 03:11:46,997 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 255 transitions. Word has length 52 [2024-11-28 03:11:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:46,998 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 255 transitions. [2024-11-28 03:11:46,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 255 transitions. [2024-11-28 03:11:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:11:47,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:47,001 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:47,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:11:47,001 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:47,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash -849822859, now seen corresponding path program 1 times [2024-11-28 03:11:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:47,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716717766] [2024-11-28 03:11:47,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:47,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:47,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716717766] [2024-11-28 03:11:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716717766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:47,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:11:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696326509] [2024-11-28 03:11:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:47,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:11:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:47,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:11:47,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:47,866 INFO L87 Difference]: Start difference. First operand 190 states and 255 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:48,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:48,003 INFO L93 Difference]: Finished difference Result 301 states and 404 transitions. [2024-11-28 03:11:48,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:11:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-28 03:11:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:48,006 INFO L225 Difference]: With dead ends: 301 [2024-11-28 03:11:48,007 INFO L226 Difference]: Without dead ends: 212 [2024-11-28 03:11:48,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:48,009 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 50 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:48,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 495 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:48,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-28 03:11:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2024-11-28 03:11:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.3317073170731708) internal successors, (273), 205 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 273 transitions. [2024-11-28 03:11:48,022 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 273 transitions. Word has length 52 [2024-11-28 03:11:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:48,022 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 273 transitions. [2024-11-28 03:11:48,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 273 transitions. [2024-11-28 03:11:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:11:48,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:48,025 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:48,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:11:48,027 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:48,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash -934888619, now seen corresponding path program 1 times [2024-11-28 03:11:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:48,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509337664] [2024-11-28 03:11:48,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:48,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509337664] [2024-11-28 03:11:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509337664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:48,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:48,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:11:48,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059931955] [2024-11-28 03:11:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:48,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:11:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:48,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:11:48,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:48,941 INFO L87 Difference]: Start difference. First operand 206 states and 273 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:49,127 INFO L93 Difference]: Finished difference Result 365 states and 490 transitions. [2024-11-28 03:11:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:11:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-28 03:11:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:49,129 INFO L225 Difference]: With dead ends: 365 [2024-11-28 03:11:49,129 INFO L226 Difference]: Without dead ends: 277 [2024-11-28 03:11:49,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:11:49,130 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 84 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:49,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 774 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-28 03:11:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 160. [2024-11-28 03:11:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.3270440251572326) internal successors, (211), 159 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2024-11-28 03:11:49,143 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 52 [2024-11-28 03:11:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:49,143 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2024-11-28 03:11:49,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2024-11-28 03:11:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:11:49,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:49,146 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:49,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:11:49,146 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:49,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash 440598411, now seen corresponding path program 1 times [2024-11-28 03:11:49,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:49,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980748142] [2024-11-28 03:11:49,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:49,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:50,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980748142] [2024-11-28 03:11:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980748142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:50,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:50,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:11:50,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256558398] [2024-11-28 03:11:50,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:50,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:11:50,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:50,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:11:50,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:50,024 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:50,398 INFO L93 Difference]: Finished difference Result 231 states and 307 transitions. [2024-11-28 03:11:50,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:11:50,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-28 03:11:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:50,400 INFO L225 Difference]: With dead ends: 231 [2024-11-28 03:11:50,400 INFO L226 Difference]: Without dead ends: 160 [2024-11-28 03:11:50,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:11:50,401 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 46 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:50,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 342 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:11:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-28 03:11:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-28 03:11:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.320754716981132) internal successors, (210), 159 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 210 transitions. [2024-11-28 03:11:50,415 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 210 transitions. Word has length 53 [2024-11-28 03:11:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:50,417 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 210 transitions. [2024-11-28 03:11:50,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 210 transitions. [2024-11-28 03:11:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 03:11:50,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:50,418 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:50,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:11:50,419 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:50,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:50,419 INFO L85 PathProgramCache]: Analyzing trace with hash -825456157, now seen corresponding path program 1 times [2024-11-28 03:11:50,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:50,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752928403] [2024-11-28 03:11:50,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:50,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:50,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:50,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752928403] [2024-11-28 03:11:50,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752928403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:50,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:50,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:11:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416290706] [2024-11-28 03:11:50,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:50,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:11:50,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:50,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:11:50,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:11:50,678 INFO L87 Difference]: Start difference. First operand 160 states and 210 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:50,797 INFO L93 Difference]: Finished difference Result 245 states and 324 transitions. [2024-11-28 03:11:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:11:50,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-28 03:11:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:50,799 INFO L225 Difference]: With dead ends: 245 [2024-11-28 03:11:50,799 INFO L226 Difference]: Without dead ends: 164 [2024-11-28 03:11:50,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:11:50,800 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 90 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:50,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 206 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-28 03:11:50,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-28 03:11:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.312883435582822) internal successors, (214), 163 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 214 transitions. [2024-11-28 03:11:50,814 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 214 transitions. Word has length 53 [2024-11-28 03:11:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:50,815 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 214 transitions. [2024-11-28 03:11:50,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 214 transitions. [2024-11-28 03:11:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 03:11:50,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:50,816 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:50,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:11:50,816 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:50,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:50,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2016640248, now seen corresponding path program 1 times [2024-11-28 03:11:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:50,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298587109] [2024-11-28 03:11:50,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:50,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:52,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:52,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298587109] [2024-11-28 03:11:52,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298587109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:52,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:52,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:11:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300874208] [2024-11-28 03:11:52,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:52,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:11:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:52,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:11:52,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:11:52,189 INFO L87 Difference]: Start difference. First operand 164 states and 214 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:52,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:52,731 INFO L93 Difference]: Finished difference Result 319 states and 419 transitions. [2024-11-28 03:11:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:11:52,732 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-28 03:11:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:52,733 INFO L225 Difference]: With dead ends: 319 [2024-11-28 03:11:52,733 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 03:11:52,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:11:52,735 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 182 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:52,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 728 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:11:52,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 03:11:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2024-11-28 03:11:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.309090909090909) internal successors, (216), 165 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2024-11-28 03:11:52,744 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 54 [2024-11-28 03:11:52,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:52,744 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2024-11-28 03:11:52,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2024-11-28 03:11:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:11:52,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:52,746 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:52,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:11:52,746 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:52,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2082331348, now seen corresponding path program 1 times [2024-11-28 03:11:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:52,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602945994] [2024-11-28 03:11:52,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:53,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602945994] [2024-11-28 03:11:53,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602945994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:53,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:53,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:11:53,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546027976] [2024-11-28 03:11:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:53,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:11:53,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:53,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:11:53,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:53,394 INFO L87 Difference]: Start difference. First operand 166 states and 216 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:53,674 INFO L93 Difference]: Finished difference Result 272 states and 355 transitions. [2024-11-28 03:11:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:11:53,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-28 03:11:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:53,676 INFO L225 Difference]: With dead ends: 272 [2024-11-28 03:11:53,676 INFO L226 Difference]: Without dead ends: 152 [2024-11-28 03:11:53,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:11:53,677 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 52 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:53,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 522 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:11:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-28 03:11:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-11-28 03:11:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.2913907284768211) internal successors, (195), 151 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 195 transitions. [2024-11-28 03:11:53,685 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 195 transitions. Word has length 55 [2024-11-28 03:11:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:53,686 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 195 transitions. [2024-11-28 03:11:53,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 195 transitions. [2024-11-28 03:11:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:11:53,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:53,687 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:53,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:11:53,687 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:53,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1046448359, now seen corresponding path program 1 times [2024-11-28 03:11:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:53,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842183889] [2024-11-28 03:11:53,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:53,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:53,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842183889] [2024-11-28 03:11:53,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842183889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:53,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:53,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:11:53,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859356783] [2024-11-28 03:11:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:53,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:11:53,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:53,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:11:53,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:11:53,965 INFO L87 Difference]: Start difference. First operand 152 states and 195 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:54,103 INFO L93 Difference]: Finished difference Result 272 states and 352 transitions. [2024-11-28 03:11:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:11:54,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-28 03:11:54,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:54,106 INFO L225 Difference]: With dead ends: 272 [2024-11-28 03:11:54,107 INFO L226 Difference]: Without dead ends: 156 [2024-11-28 03:11:54,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:11:54,107 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:54,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-28 03:11:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-28 03:11:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.2838709677419355) internal successors, (199), 155 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2024-11-28 03:11:54,117 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 55 [2024-11-28 03:11:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:54,117 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2024-11-28 03:11:54,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:11:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2024-11-28 03:11:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:11:54,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:54,118 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:54,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:11:54,119 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:54,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash 790817595, now seen corresponding path program 1 times [2024-11-28 03:11:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:54,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674103630] [2024-11-28 03:11:54,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:11:54,292 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:11:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:11:54,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:11:54,539 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:11:54,541 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 03:11:54,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:11:54,547 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:54,626 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:11:54,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:54 BoogieIcfgContainer [2024-11-28 03:11:54,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:11:54,632 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:11:54,632 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:11:54,632 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:11:54,633 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:33" (3/4) ... [2024-11-28 03:11:54,637 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 03:11:54,638 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:11:54,639 INFO L158 Benchmark]: Toolchain (without parser) took 22812.13ms. Allocated memory was 142.6MB in the beginning and 654.3MB in the end (delta: 511.7MB). Free memory was 98.9MB in the beginning and 588.9MB in the end (delta: -490.0MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2024-11-28 03:11:54,639 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:11:54,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.38ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 84.6MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:11:54,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.67ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 78.4MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:11:54,641 INFO L158 Benchmark]: Boogie Preprocessor took 132.68ms. Allocated memory is still 142.6MB. Free memory was 78.1MB in the beginning and 74.2MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:11:54,641 INFO L158 Benchmark]: RCFGBuilder took 1026.10ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 38.2MB in the end (delta: 36.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 03:11:54,642 INFO L158 Benchmark]: TraceAbstraction took 21102.35ms. Allocated memory was 142.6MB in the beginning and 654.3MB in the end (delta: 511.7MB). Free memory was 37.6MB in the beginning and 589.1MB in the end (delta: -551.5MB). Peak memory consumption was 254.2MB. Max. memory is 16.1GB. [2024-11-28 03:11:54,642 INFO L158 Benchmark]: Witness Printer took 6.11ms. Allocated memory is still 654.3MB. Free memory was 589.1MB in the beginning and 588.9MB in the end (delta: 175.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:11:54,644 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.38ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 84.6MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.67ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 78.4MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 132.68ms. Allocated memory is still 142.6MB. Free memory was 78.1MB in the beginning and 74.2MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1026.10ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 38.2MB in the end (delta: 36.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 21102.35ms. Allocated memory was 142.6MB in the beginning and 654.3MB in the end (delta: 511.7MB). Free memory was 37.6MB in the beginning and 589.1MB in the end (delta: -551.5MB). Peak memory consumption was 254.2MB. Max. memory is 16.1GB. * Witness Printer took 6.11ms. Allocated memory is still 654.3MB. Free memory was 589.1MB in the beginning and 588.9MB in the end (delta: 175.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftRight at line 78, overapproximation of bitwiseOr at line 134, overapproximation of bitwiseAnd at line 147, overapproximation of bitwiseAnd at line 135, overapproximation of bitwiseAnd at line 113. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_4 var_5 = 0; [L33] const SORT_1 var_14 = 1; [L34] const SORT_4 var_19 = 1; [L35] const SORT_4 var_22 = 15; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L40] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=15, var_14=1, var_19=1, var_22=15, var_5=0] [L40] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L41] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=15, var_14=1, var_19=1, var_22=15, var_5=0] [L41] SORT_4 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L43] SORT_4 init_7_arg_1 = var_5; [L44] state_6 = init_7_arg_1 [L45] SORT_4 init_9_arg_1 = var_5; [L46] state_8 = init_9_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15] [L49] input_2 = __VERIFIER_nondet_uchar() [L50] input_3 = __VERIFIER_nondet_uchar() [L53] SORT_4 var_10_arg_0 = state_6; [L54] SORT_4 var_10_arg_1 = state_8; [L55] SORT_1 var_10 = var_10_arg_0 < var_10_arg_1; [L56] SORT_1 var_11_arg_0 = var_10; [L57] SORT_1 var_11 = ~var_11_arg_0; [L58] SORT_1 var_15_arg_0 = var_11; [L59] SORT_1 var_15 = ~var_15_arg_0; [L60] SORT_1 var_16_arg_0 = var_14; [L61] SORT_1 var_16_arg_1 = var_15; VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_16_arg_0=1, var_16_arg_1=-256, var_19=1, var_22=15] [L62] EXPR var_16_arg_0 & var_16_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15] [L62] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L63] EXPR var_16 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15] [L63] var_16 = var_16 & mask_SORT_1 [L64] SORT_1 bad_17_arg_0 = var_16; [L65] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND FALSE !(!(cond)) [L65] RET __VERIFIER_assert(!(bad_17_arg_0)) [L67] SORT_1 var_31_arg_0 = input_3; [L68] SORT_1 var_31 = ~var_31_arg_0; [L69] SORT_4 var_32_arg_0 = state_6; [L70] SORT_4 var_32_arg_1 = state_8; [L71] SORT_1 var_32 = var_32_arg_0 > var_32_arg_1; [L72] SORT_1 var_33_arg_0 = var_31; [L73] SORT_1 var_33_arg_1 = var_32; VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_33_arg_0=-256, var_33_arg_1=0] [L74] EXPR var_33_arg_0 & var_33_arg_1 VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15] [L74] SORT_1 var_33 = var_33_arg_0 & var_33_arg_1; [L75] EXPR var_33 & mask_SORT_1 VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15] [L75] var_33 = var_33 & mask_SORT_1 [L76] SORT_4 var_28_arg_0 = var_22; [L77] SORT_4 var_28_arg_1 = var_19; VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_28_arg_0=15, var_28_arg_1=1, var_33=0] [L78] EXPR var_28_arg_0 >> var_28_arg_1 VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_33=0] [L78] SORT_4 var_28 = var_28_arg_0 >> var_28_arg_1; [L79] SORT_4 var_29_arg_0 = state_6; [L80] SORT_4 var_29_arg_1 = var_19; VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_28=-255, var_29_arg_0=0, var_29_arg_1=1, var_33=0] [L81] EXPR var_29_arg_0 >> var_29_arg_1 VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_28=-255, var_33=0] [L81] SORT_4 var_29 = var_29_arg_0 >> var_29_arg_1; [L82] SORT_4 var_30_arg_0 = var_28; [L83] SORT_4 var_30_arg_1 = var_29; [L84] SORT_4 var_30 = var_30_arg_0 + var_30_arg_1; [L85] SORT_4 var_26_arg_0 = state_6; [L86] SORT_4 var_26_arg_1 = state_8; [L87] SORT_1 var_26 = var_26_arg_0 < var_26_arg_1; [L88] SORT_4 var_21_arg_0 = state_8; [L89] SORT_4 var_21_arg_1 = state_6; [L90] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L91] SORT_4 var_23_arg_0 = state_6; [L92] SORT_4 var_23_arg_1 = var_22; [L93] SORT_1 var_23 = var_23_arg_0 != var_23_arg_1; [L94] SORT_1 var_24_arg_0 = var_21; [L95] SORT_1 var_24_arg_1 = var_23; VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_24_arg_0=1, var_24_arg_1=1, var_26=0, var_30=1, var_33=0] [L96] EXPR var_24_arg_0 | var_24_arg_1 VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_26=0, var_30=1, var_33=0] [L96] SORT_1 var_24 = var_24_arg_0 | var_24_arg_1; [L97] EXPR var_24 & mask_SORT_1 VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_26=0, var_30=1, var_33=0] [L97] var_24 = var_24 & mask_SORT_1 [L98] SORT_4 var_20_arg_0 = state_6; [L99] SORT_4 var_20_arg_1 = var_19; [L100] SORT_4 var_20 = var_20_arg_0 + var_20_arg_1; [L101] SORT_1 var_25_arg_0 = var_24; [L102] SORT_4 var_25_arg_1 = var_20; [L103] SORT_4 var_25_arg_2 = state_8; [L104] SORT_4 var_25 = var_25_arg_0 ? var_25_arg_1 : var_25_arg_2; [L105] SORT_1 var_27_arg_0 = var_26; [L106] SORT_4 var_27_arg_1 = state_6; [L107] SORT_4 var_27_arg_2 = var_25; [L108] SORT_4 var_27 = var_27_arg_0 ? var_27_arg_1 : var_27_arg_2; [L109] SORT_1 var_34_arg_0 = var_33; [L110] SORT_4 var_34_arg_1 = var_30; [L111] SORT_4 var_34_arg_2 = var_27; [L112] SORT_4 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_34=1] [L113] EXPR var_34 & mask_SORT_4 VAL [input_3=255, mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15] [L113] var_34 = var_34 & mask_SORT_4 [L114] SORT_4 next_35_arg_1 = var_34; [L115] SORT_1 var_42_arg_0 = input_3; [L116] SORT_1 var_42 = ~var_42_arg_0; [L117] SORT_4 var_43_arg_0 = state_6; [L118] SORT_4 var_43_arg_1 = state_8; [L119] SORT_1 var_43 = var_43_arg_0 > var_43_arg_1; [L120] SORT_1 var_44_arg_0 = var_42; [L121] SORT_1 var_44_arg_1 = var_43; VAL [mask_SORT_1=1, mask_SORT_4=15, next_35_arg_1=0, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_44_arg_0=-256, var_44_arg_1=0] [L122] EXPR var_44_arg_0 & var_44_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=15, next_35_arg_1=0, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15] [L122] SORT_1 var_44 = var_44_arg_0 & var_44_arg_1; [L123] EXPR var_44 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, next_35_arg_1=0, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15] [L123] var_44 = var_44 & mask_SORT_1 [L124] SORT_4 var_37_arg_0 = state_6; [L125] SORT_4 var_37_arg_1 = state_8; [L126] SORT_1 var_37 = var_37_arg_0 > var_37_arg_1; [L127] SORT_1 var_38_arg_0 = var_37; [L128] SORT_1 var_38 = ~var_38_arg_0; [L129] SORT_4 var_39_arg_0 = state_6; [L130] SORT_4 var_39_arg_1 = var_22; [L131] SORT_1 var_39 = var_39_arg_0 != var_39_arg_1; [L132] SORT_1 var_40_arg_0 = var_38; [L133] SORT_1 var_40_arg_1 = var_39; VAL [mask_SORT_1=1, mask_SORT_4=15, next_35_arg_1=0, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_40_arg_0=-1, var_40_arg_1=1, var_44=0] [L134] EXPR var_40_arg_0 | var_40_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=15, next_35_arg_1=0, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_44=0] [L134] SORT_1 var_40 = var_40_arg_0 | var_40_arg_1; [L135] EXPR var_40 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, next_35_arg_1=0, state_6=0, state_8=0, var_14=1, var_19=1, var_22=15, var_44=0] [L135] var_40 = var_40 & mask_SORT_1 [L136] SORT_4 var_36_arg_0 = state_8; [L137] SORT_4 var_36_arg_1 = var_19; [L138] SORT_4 var_36 = var_36_arg_0 + var_36_arg_1; [L139] SORT_1 var_41_arg_0 = var_40; [L140] SORT_4 var_41_arg_1 = var_36; [L141] SORT_4 var_41_arg_2 = state_6; [L142] SORT_4 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L143] SORT_1 var_45_arg_0 = var_44; [L144] SORT_4 var_45_arg_1 = state_8; [L145] SORT_4 var_45_arg_2 = var_41; [L146] SORT_4 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; VAL [mask_SORT_1=1, mask_SORT_4=15, next_35_arg_1=0, var_14=1, var_19=1, var_22=15, var_45=1] [L147] EXPR var_45 & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=15, next_35_arg_1=0, var_14=1, var_19=1, var_22=15] [L147] var_45 = var_45 & mask_SORT_4 [L148] SORT_4 next_46_arg_1 = var_45; [L150] state_6 = next_35_arg_1 [L151] state_8 = next_46_arg_1 [L49] input_2 = __VERIFIER_nondet_uchar() [L50] input_3 = __VERIFIER_nondet_uchar() [L53] SORT_4 var_10_arg_0 = state_6; [L54] SORT_4 var_10_arg_1 = state_8; [L55] SORT_1 var_10 = var_10_arg_0 < var_10_arg_1; [L56] SORT_1 var_11_arg_0 = var_10; [L57] SORT_1 var_11 = ~var_11_arg_0; [L58] SORT_1 var_15_arg_0 = var_11; [L59] SORT_1 var_15 = ~var_15_arg_0; [L60] SORT_1 var_16_arg_0 = var_14; [L61] SORT_1 var_16_arg_1 = var_15; VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=1, var_14=1, var_16_arg_0=1, var_16_arg_1=-255, var_19=1, var_22=15] [L62] EXPR var_16_arg_0 & var_16_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=1, var_14=1, var_19=1, var_22=15] [L62] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L63] EXPR var_16 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=0, state_8=1, var_14=1, var_19=1, var_22=15] [L63] var_16 = var_16 & mask_SORT_1 [L64] SORT_1 bad_17_arg_0 = var_16; [L65] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.9s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1152 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1152 mSDsluCounter, 7818 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6065 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2122 IncrementalHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1753 mSDtfsCounter, 2122 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=13, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 320 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 964 NumberOfCodeBlocks, 964 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 888 ConstructedInterpolants, 0 QuantifiedInterpolants, 4181 SizeOfPredicates, 1 NumberOfNonLiveVariables, 338 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 20 InterpolantComputations, 19 PerfectInterpolantSequences, 98/102 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 03:11:54,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/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_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/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 64bit --witnessprinter.graph.data.programhash 16f8726a4add15d0bf2494bd44888be53eb7bc01110882b6fc03ef148c6d9055 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:11:57,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:11:58,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-28 03:11:58,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:11:58,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:11:58,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:11:58,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:11:58,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:11:58,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:11:58,073 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:11:58,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:11:58,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:11:58,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:11:58,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:11:58,075 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:11:58,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:11:58,076 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:11:58,077 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:11:58,077 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:11:58,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:58,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:58,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:58,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:58,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:11:58,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:58,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:58,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:58,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:58,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:11:58,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:11:58,081 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:11:58,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:11:58,081 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:11:58,081 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:11:58,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:11:58,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:11:58,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:11:58,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:11:58,082 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_f45ae962-f8c1-4c1e-8c1d-841042546173/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16f8726a4add15d0bf2494bd44888be53eb7bc01110882b6fc03ef148c6d9055 [2024-11-28 03:11:58,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:11:58,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:11:58,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:11:58,491 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:11:58,494 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:11:58,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2024-11-28 03:12:02,246 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data/f7111f245/c1a1555c66c347558686aecfd4b3e590/FLAG915918fa0 [2024-11-28 03:12:02,641 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:12:02,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c [2024-11-28 03:12:02,660 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data/f7111f245/c1a1555c66c347558686aecfd4b3e590/FLAG915918fa0 [2024-11-28 03:12:02,690 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/data/f7111f245/c1a1555c66c347558686aecfd4b3e590 [2024-11-28 03:12:02,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:12:02,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:12:02,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:12:02,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:12:02,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:12:02,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:02" (1/1) ... [2024-11-28 03:12:02,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c61e115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:02, skipping insertion in model container [2024-11-28 03:12:02,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:02" (1/1) ... [2024-11-28 03:12:02,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:12:02,958 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_f45ae962-f8c1-4c1e-8c1d-841042546173/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1248,1261] [2024-11-28 03:12:03,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:12:03,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:12:03,096 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_f45ae962-f8c1-4c1e-8c1d-841042546173/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal.c[1248,1261] [2024-11-28 03:12:03,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:12:03,153 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:12:03,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03 WrapperNode [2024-11-28 03:12:03,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:12:03,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:12:03,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:12:03,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:12:03,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,210 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 141 [2024-11-28 03:12:03,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:12:03,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:12:03,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:12:03,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:12:03,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,266 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 03:12:03,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,285 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:12:03,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:12:03,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:12:03,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:12:03,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (1/1) ... [2024-11-28 03:12:03,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:12:03,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:03,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:12:03,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:12:03,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:12:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:12:03,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:12:03,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:12:03,578 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:12:03,581 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:12:03,904 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-28 03:12:03,905 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:12:03,916 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:12:03,916 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:12:03,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:03 BoogieIcfgContainer [2024-11-28 03:12:03,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:12:03,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:12:03,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:12:03,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:12:03,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:02" (1/3) ... [2024-11-28 03:12:03,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3da82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:03, skipping insertion in model container [2024-11-28 03:12:03,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:03" (2/3) ... [2024-11-28 03:12:03,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3da82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:03, skipping insertion in model container [2024-11-28 03:12:03,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:03" (3/3) ... [2024-11-28 03:12:03,931 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal.c [2024-11-28 03:12:03,992 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:12:03,997 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.diagonal.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:12:04,068 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:12:04,083 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;@f058d66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:12:04,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:12:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 03:12:04,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:04,093 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:12:04,094 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:04,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-28 03:12:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:04,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336119604] [2024-11-28 03:12:04,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:04,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:04,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:04,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:04,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:12:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:04,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:12:04,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:04,699 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 03:12:04,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:12:04,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:12:04,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336119604] [2024-11-28 03:12:04,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336119604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:04,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:04,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:12:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812750199] [2024-11-28 03:12:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:04,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:12:04,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:12:04,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:12:04,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:12:04,751 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:04,840 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-28 03:12:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:12:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-28 03:12:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:04,855 INFO L225 Difference]: With dead ends: 18 [2024-11-28 03:12:04,855 INFO L226 Difference]: Without dead ends: 10 [2024-11-28 03:12:04,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:12:04,865 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:04,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:12:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-28 03:12:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-28 03:12:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:04,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-28 03:12:04,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-28 03:12:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:04,912 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-28 03:12:04,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-28 03:12:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 03:12:04,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:04,916 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:04,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:12:05,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:05,117 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:05,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-28 03:12:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:05,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427265185] [2024-11-28 03:12:05,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:05,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:05,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:05,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:05,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:12:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:05,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:12:05,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:06,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:12,102 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:12:12,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427265185] [2024-11-28 03:12:12,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427265185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:12,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:12:12,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-28 03:12:12,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447254871] [2024-11-28 03:12:12,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:12,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:12:12,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:12:12,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:12:12,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:12:12,108 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:13,025 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-11-28 03:12:13,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:12:13,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 03:12:13,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:13,027 INFO L225 Difference]: With dead ends: 21 [2024-11-28 03:12:13,028 INFO L226 Difference]: Without dead ends: 19 [2024-11-28 03:12:13,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:12:13,031 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:13,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:12:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-28 03:12:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-11-28 03:12:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-11-28 03:12:13,042 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2024-11-28 03:12:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:13,043 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-11-28 03:12:13,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-11-28 03:12:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:12:13,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:13,044 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-11-28 03:12:13,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:12:13,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:13,245 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:13,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 2 times [2024-11-28 03:12:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:12:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82670559] [2024-11-28 03:12:13,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:13,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:13,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:13,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:13,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:12:13,453 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:13,454 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:13,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:12:13,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:14,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:03,156 WARN L286 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 1437 DAG size of output: 1271 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:16:07,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 03:16:07,998 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 03:16:07,999 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:16:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82670559] [2024-11-28 03:16:08,000 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 03:16:08,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:16:08,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:08,201 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:912) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2024-11-28 03:16:08,206 INFO L158 Benchmark]: Toolchain (without parser) took 245510.03ms. Allocated memory was 83.9MB in the beginning and 1.5GB in the end (delta: 1.5GB). Free memory was 60.8MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 929.2MB. Max. memory is 16.1GB. [2024-11-28 03:16:08,206 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:16:08,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.69ms. Allocated memory is still 83.9MB. Free memory was 60.5MB in the beginning and 46.8MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:16:08,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.30ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 44.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:16:08,207 INFO L158 Benchmark]: Boogie Preprocessor took 95.24ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 42.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:16:08,208 INFO L158 Benchmark]: RCFGBuilder took 609.56ms. Allocated memory is still 83.9MB. Free memory was 42.7MB in the beginning and 24.3MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:16:08,209 INFO L158 Benchmark]: TraceAbstraction took 244284.64ms. Allocated memory was 83.9MB in the beginning and 1.5GB in the end (delta: 1.5GB). Free memory was 23.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 895.7MB. Max. memory is 16.1GB. [2024-11-28 03:16:08,211 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 456.69ms. Allocated memory is still 83.9MB. Free memory was 60.5MB in the beginning and 46.8MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.30ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 44.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 95.24ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 42.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 609.56ms. Allocated memory is still 83.9MB. Free memory was 42.7MB in the beginning and 24.3MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 244284.64ms. Allocated memory was 83.9MB in the beginning and 1.5GB in the end (delta: 1.5GB). Free memory was 23.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 895.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45ae962-f8c1-4c1e-8c1d-841042546173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")