./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fd1b86eb4bd4da10127873e4ddea09cb0ce3be9adebe9545b8e8b0c5a6a02d7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:18:06,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:18:06,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:18:06,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:18:06,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:18:06,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:18:06,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:18:06,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:18:06,451 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:18:06,451 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:18:06,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:18:06,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:18:06,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:18:06,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:18:06,453 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:18:06,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:18:06,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:18:06,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:18:06,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:18:06,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:18:06,455 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:18:06,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:06,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:06,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:18:06,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:18:06,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:18:06,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:18:06,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:18:06,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:18:06,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:18:06,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:18:06,457 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_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd1b86eb4bd4da10127873e4ddea09cb0ce3be9adebe9545b8e8b0c5a6a02d7 [2024-11-24 01:18:06,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:18:06,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:18:06,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:18:06,768 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:18:06,768 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:18:06,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-24 01:18:09,698 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/data/d9b8b19a9/364aedf9b472448192839f415dcf2433/FLAGb4d8ca964 [2024-11-24 01:18:10,035 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:18:10,035 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-24 01:18:10,050 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/data/d9b8b19a9/364aedf9b472448192839f415dcf2433/FLAGb4d8ca964 [2024-11-24 01:18:10,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/data/d9b8b19a9/364aedf9b472448192839f415dcf2433 [2024-11-24 01:18:10,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:18:10,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:18:10,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:18:10,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:18:10,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:18:10,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cd6271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10, skipping insertion in model container [2024-11-24 01:18:10,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,126 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:18:10,373 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_91659717-e65d-4cc2-946c-315d987159c7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-24 01:18:10,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:18:10,443 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:18:10,519 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_91659717-e65d-4cc2-946c-315d987159c7/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-24 01:18:10,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:18:10,561 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:18:10,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10 WrapperNode [2024-11-24 01:18:10,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:18:10,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:18:10,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:18:10,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:18:10,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,621 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 687 [2024-11-24 01:18:10,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:18:10,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:18:10,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:18:10,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:18:10,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,641 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,665 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]. [2024-11-24 01:18:10,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,686 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:18:10,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:18:10,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:18:10,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:18:10,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2024-11-24 01:18:10,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:18:10,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:18:10,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91659717-e65d-4cc2-946c-315d987159c7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:18:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:18:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:18:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:18:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:18:10,943 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:18:10,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:18:11,803 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-24 01:18:11,803 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:18:11,823 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:18:11,823 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:18:11,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:11 BoogieIcfgContainer [2024-11-24 01:18:11,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:18:11,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:18:11,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:18:11,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:18:11,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:18:10" (1/3) ... [2024-11-24 01:18:11,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd16686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:11, skipping insertion in model container [2024-11-24 01:18:11,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (2/3) ... [2024-11-24 01:18:11,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd16686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:11, skipping insertion in model container [2024-11-24 01:18:11,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:11" (3/3) ... [2024-11-24 01:18:11,837 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-24 01:18:11,854 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:18:11,856 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c that has 1 procedures, 149 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 01:18:11,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:18:11,951 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;@63f9d3e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:18:11,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:18:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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) [2024-11-24 01:18:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 01:18:11,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:11,970 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:11,970 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:11,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1468963440, now seen corresponding path program 1 times [2024-11-24 01:18:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183311124] [2024-11-24 01:18:11,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:12,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:12,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183311124] [2024-11-24 01:18:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183311124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:12,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:12,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:12,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124680360] [2024-11-24 01:18:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:12,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:12,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:12,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:12,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:12,620 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-24 01:18:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:12,716 INFO L93 Difference]: Finished difference Result 311 states and 527 transitions. [2024-11-24 01:18:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:12,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2024-11-24 01:18:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:12,729 INFO L225 Difference]: With dead ends: 311 [2024-11-24 01:18:12,731 INFO L226 Difference]: Without dead ends: 213 [2024-11-24 01:18:12,734 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 [2024-11-24 01:18:12,740 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 150 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:12,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 432 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-24 01:18:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2024-11-24 01:18:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.5666666666666667) internal successors, (329), 210 states have internal predecessors, (329), 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) [2024-11-24 01:18:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 329 transitions. [2024-11-24 01:18:12,801 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 329 transitions. Word has length 62 [2024-11-24 01:18:12,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:12,803 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 329 transitions. [2024-11-24 01:18:12,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-24 01:18:12,803 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 329 transitions. [2024-11-24 01:18:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:18:12,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:12,805 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:12,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:18:12,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:12,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash -240910223, now seen corresponding path program 1 times [2024-11-24 01:18:12,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:12,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402928581] [2024-11-24 01:18:12,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:12,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402928581] [2024-11-24 01:18:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402928581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:13,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019556720] [2024-11-24 01:18:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:13,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:13,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:13,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:13,121 INFO L87 Difference]: Start difference. First operand 211 states and 329 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-24 01:18:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:13,187 INFO L93 Difference]: Finished difference Result 503 states and 809 transitions. [2024-11-24 01:18:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:13,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-11-24 01:18:13,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:13,193 INFO L225 Difference]: With dead ends: 503 [2024-11-24 01:18:13,193 INFO L226 Difference]: Without dead ends: 349 [2024-11-24 01:18:13,194 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 [2024-11-24 01:18:13,195 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:13,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 415 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-24 01:18:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2024-11-24 01:18:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.5953757225433527) internal successors, (552), 346 states have internal predecessors, (552), 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) [2024-11-24 01:18:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 552 transitions. [2024-11-24 01:18:13,231 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 552 transitions. Word has length 64 [2024-11-24 01:18:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:13,231 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 552 transitions. [2024-11-24 01:18:13,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-24 01:18:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 552 transitions. [2024-11-24 01:18:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 01:18:13,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:13,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:13,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:18:13,234 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:13,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1851209774, now seen corresponding path program 1 times [2024-11-24 01:18:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:13,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576580781] [2024-11-24 01:18:13,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:13,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:13,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:13,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576580781] [2024-11-24 01:18:13,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576580781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:13,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:13,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369565047] [2024-11-24 01:18:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:13,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:13,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:13,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:13,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:13,499 INFO L87 Difference]: Start difference. First operand 347 states and 552 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-24 01:18:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:13,553 INFO L93 Difference]: Finished difference Result 895 states and 1450 transitions. [2024-11-24 01:18:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:13,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-24 01:18:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:13,558 INFO L225 Difference]: With dead ends: 895 [2024-11-24 01:18:13,558 INFO L226 Difference]: Without dead ends: 605 [2024-11-24 01:18:13,563 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 [2024-11-24 01:18:13,564 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 119 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:13,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-24 01:18:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 603. [2024-11-24 01:18:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.6079734219269104) internal successors, (968), 602 states have internal predecessors, (968), 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) [2024-11-24 01:18:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 968 transitions. [2024-11-24 01:18:13,601 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 968 transitions. Word has length 66 [2024-11-24 01:18:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:13,601 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 968 transitions. [2024-11-24 01:18:13,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-24 01:18:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 968 transitions. [2024-11-24 01:18:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:18:13,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:13,604 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:13,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:18:13,604 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:13,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:13,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1666116403, now seen corresponding path program 1 times [2024-11-24 01:18:13,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:13,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410267131] [2024-11-24 01:18:13,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:13,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:13,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410267131] [2024-11-24 01:18:13,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410267131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:13,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:13,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:18:13,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595115833] [2024-11-24 01:18:13,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:13,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:18:13,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:13,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:18:13,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:13,904 INFO L87 Difference]: Start difference. First operand 603 states and 968 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-24 01:18:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:14,219 INFO L93 Difference]: Finished difference Result 3079 states and 5038 transitions. [2024-11-24 01:18:14,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:18:14,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-24 01:18:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:14,234 INFO L225 Difference]: With dead ends: 3079 [2024-11-24 01:18:14,234 INFO L226 Difference]: Without dead ends: 2533 [2024-11-24 01:18:14,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:18:14,238 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 857 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:14,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1617 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:18:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2024-11-24 01:18:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1131. [2024-11-24 01:18:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 1.6176991150442477) internal successors, (1828), 1130 states have internal predecessors, (1828), 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) [2024-11-24 01:18:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1828 transitions. [2024-11-24 01:18:14,321 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1828 transitions. Word has length 68 [2024-11-24 01:18:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:14,321 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1828 transitions. [2024-11-24 01:18:14,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-24 01:18:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1828 transitions. [2024-11-24 01:18:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 01:18:14,329 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:14,329 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:14,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:18:14,329 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:14,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:14,330 INFO L85 PathProgramCache]: Analyzing trace with hash 47496755, now seen corresponding path program 1 times [2024-11-24 01:18:14,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:14,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330800914] [2024-11-24 01:18:14,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:14,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:14,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:14,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330800914] [2024-11-24 01:18:14,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330800914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:14,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:14,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:18:14,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554042595] [2024-11-24 01:18:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:14,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:18:14,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:14,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:18:14,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:14,569 INFO L87 Difference]: Start difference. First operand 1131 states and 1828 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-24 01:18:14,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:14,710 INFO L93 Difference]: Finished difference Result 4121 states and 6711 transitions. [2024-11-24 01:18:14,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:18:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2024-11-24 01:18:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:14,724 INFO L225 Difference]: With dead ends: 4121 [2024-11-24 01:18:14,725 INFO L226 Difference]: Without dead ends: 3047 [2024-11-24 01:18:14,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:14,727 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 430 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:14,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 755 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3047 states. [2024-11-24 01:18:14,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3047 to 2080. [2024-11-24 01:18:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2079 states have (on average 1.618085618085618) internal successors, (3364), 2079 states have internal predecessors, (3364), 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) [2024-11-24 01:18:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 3364 transitions. [2024-11-24 01:18:14,804 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 3364 transitions. Word has length 69 [2024-11-24 01:18:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:14,805 INFO L471 AbstractCegarLoop]: Abstraction has 2080 states and 3364 transitions. [2024-11-24 01:18:14,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-24 01:18:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 3364 transitions. [2024-11-24 01:18:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:18:14,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:14,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:14,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:18:14,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:14,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:14,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1156873170, now seen corresponding path program 1 times [2024-11-24 01:18:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:14,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181443336] [2024-11-24 01:18:14,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181443336] [2024-11-24 01:18:14,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181443336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:14,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:14,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:14,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204994864] [2024-11-24 01:18:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:14,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:14,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:14,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:14,957 INFO L87 Difference]: Start difference. First operand 2080 states and 3364 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:18:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:15,025 INFO L93 Difference]: Finished difference Result 4970 states and 8089 transitions. [2024-11-24 01:18:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:15,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-24 01:18:15,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:15,036 INFO L225 Difference]: With dead ends: 4970 [2024-11-24 01:18:15,037 INFO L226 Difference]: Without dead ends: 2947 [2024-11-24 01:18:15,042 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 [2024-11-24 01:18:15,046 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:15,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 512 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2024-11-24 01:18:15,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2945. [2024-11-24 01:18:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 1.6246603260869565) internal successors, (4783), 2944 states have internal predecessors, (4783), 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) [2024-11-24 01:18:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 4783 transitions. [2024-11-24 01:18:15,121 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 4783 transitions. Word has length 70 [2024-11-24 01:18:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:15,122 INFO L471 AbstractCegarLoop]: Abstraction has 2945 states and 4783 transitions. [2024-11-24 01:18:15,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:18:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 4783 transitions. [2024-11-24 01:18:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:18:15,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:15,124 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:15,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:18:15,124 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:15,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1843763252, now seen corresponding path program 1 times [2024-11-24 01:18:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:15,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129717437] [2024-11-24 01:18:15,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:15,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:15,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129717437] [2024-11-24 01:18:15,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129717437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:15,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:15,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:15,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062740038] [2024-11-24 01:18:15,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:15,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:15,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:15,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:15,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:15,253 INFO L87 Difference]: Start difference. First operand 2945 states and 4783 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:18:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:15,310 INFO L93 Difference]: Finished difference Result 5677 states and 9250 transitions. [2024-11-24 01:18:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:15,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-24 01:18:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:15,327 INFO L225 Difference]: With dead ends: 5677 [2024-11-24 01:18:15,327 INFO L226 Difference]: Without dead ends: 4055 [2024-11-24 01:18:15,329 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 [2024-11-24 01:18:15,331 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 126 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:15,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 498 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:15,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4055 states. [2024-11-24 01:18:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4055 to 4053. [2024-11-24 01:18:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4053 states, 4052 states have (on average 1.6187068114511352) internal successors, (6559), 4052 states have internal predecessors, (6559), 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) [2024-11-24 01:18:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 6559 transitions. [2024-11-24 01:18:15,453 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 6559 transitions. Word has length 70 [2024-11-24 01:18:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:15,453 INFO L471 AbstractCegarLoop]: Abstraction has 4053 states and 6559 transitions. [2024-11-24 01:18:15,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:18:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 6559 transitions. [2024-11-24 01:18:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:18:15,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:15,456 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:15,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:18:15,456 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:15,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1414453242, now seen corresponding path program 1 times [2024-11-24 01:18:15,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:15,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324493885] [2024-11-24 01:18:15,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:15,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:15,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:15,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324493885] [2024-11-24 01:18:15,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324493885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:15,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:15,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:18:15,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224891369] [2024-11-24 01:18:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:15,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:18:15,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:15,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:18:15,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:15,655 INFO L87 Difference]: Start difference. First operand 4053 states and 6559 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-24 01:18:15,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:15,825 INFO L93 Difference]: Finished difference Result 12839 states and 20847 transitions. [2024-11-24 01:18:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:18:15,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2024-11-24 01:18:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:15,857 INFO L225 Difference]: With dead ends: 12839 [2024-11-24 01:18:15,857 INFO L226 Difference]: Without dead ends: 8861 [2024-11-24 01:18:15,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:15,863 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 429 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:15,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 747 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8861 states. [2024-11-24 01:18:16,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8861 to 6434. [2024-11-24 01:18:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 6433 states have (on average 1.61168972485621) internal successors, (10368), 6433 states have internal predecessors, (10368), 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) [2024-11-24 01:18:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 10368 transitions. [2024-11-24 01:18:16,064 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 10368 transitions. Word has length 70 [2024-11-24 01:18:16,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:16,064 INFO L471 AbstractCegarLoop]: Abstraction has 6434 states and 10368 transitions. [2024-11-24 01:18:16,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-24 01:18:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 10368 transitions. [2024-11-24 01:18:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:18:16,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:16,068 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:16,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:18:16,068 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:16,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1510229994, now seen corresponding path program 1 times [2024-11-24 01:18:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:16,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810021741] [2024-11-24 01:18:16,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810021741] [2024-11-24 01:18:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810021741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:16,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132635587] [2024-11-24 01:18:16,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:16,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:16,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:16,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:16,178 INFO L87 Difference]: Start difference. First operand 6434 states and 10368 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:18:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:16,252 INFO L93 Difference]: Finished difference Result 12442 states and 20091 transitions. [2024-11-24 01:18:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-24 01:18:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:16,332 INFO L225 Difference]: With dead ends: 12442 [2024-11-24 01:18:16,332 INFO L226 Difference]: Without dead ends: 8786 [2024-11-24 01:18:16,335 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 [2024-11-24 01:18:16,336 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 120 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:16,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 475 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2024-11-24 01:18:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 8784. [2024-11-24 01:18:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8784 states, 8783 states have (on average 1.6019583285893202) internal successors, (14070), 8783 states have internal predecessors, (14070), 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) [2024-11-24 01:18:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8784 states to 8784 states and 14070 transitions. [2024-11-24 01:18:16,574 INFO L78 Accepts]: Start accepts. Automaton has 8784 states and 14070 transitions. Word has length 70 [2024-11-24 01:18:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:16,574 INFO L471 AbstractCegarLoop]: Abstraction has 8784 states and 14070 transitions. [2024-11-24 01:18:16,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:18:16,574 INFO L276 IsEmpty]: Start isEmpty. Operand 8784 states and 14070 transitions. [2024-11-24 01:18:16,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-24 01:18:16,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:16,575 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:16,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:18:16,576 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:16,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash 844989402, now seen corresponding path program 1 times [2024-11-24 01:18:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208761111] [2024-11-24 01:18:16,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:16,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:16,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208761111] [2024-11-24 01:18:16,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208761111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:16,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:16,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:18:16,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627317442] [2024-11-24 01:18:16,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:16,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:18:16,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:16,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:18:16,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:16,763 INFO L87 Difference]: Start difference. First operand 8784 states and 14070 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-24 01:18:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:16,967 INFO L93 Difference]: Finished difference Result 27681 states and 44433 transitions. [2024-11-24 01:18:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:18:16,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 71 [2024-11-24 01:18:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:17,019 INFO L225 Difference]: With dead ends: 27681 [2024-11-24 01:18:17,019 INFO L226 Difference]: Without dead ends: 18988 [2024-11-24 01:18:17,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:17,035 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 427 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:17,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 749 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18988 states. [2024-11-24 01:18:17,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18988 to 13833. [2024-11-24 01:18:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13833 states, 13832 states have (on average 1.5921775592828225) internal successors, (22023), 13832 states have internal predecessors, (22023), 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) [2024-11-24 01:18:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13833 states to 13833 states and 22023 transitions. [2024-11-24 01:18:17,475 INFO L78 Accepts]: Start accepts. Automaton has 13833 states and 22023 transitions. Word has length 71 [2024-11-24 01:18:17,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:17,476 INFO L471 AbstractCegarLoop]: Abstraction has 13833 states and 22023 transitions. [2024-11-24 01:18:17,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-24 01:18:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 13833 states and 22023 transitions. [2024-11-24 01:18:17,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-24 01:18:17,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:17,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:17,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:18:17,477 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:17,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1231314837, now seen corresponding path program 1 times [2024-11-24 01:18:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:17,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327798372] [2024-11-24 01:18:17,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:17,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:17,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327798372] [2024-11-24 01:18:17,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327798372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:17,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:17,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:18:17,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921504486] [2024-11-24 01:18:17,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:17,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:18:17,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:17,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:18:17,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:17,857 INFO L87 Difference]: Start difference. First operand 13833 states and 22023 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-24 01:18:18,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:18,231 INFO L93 Difference]: Finished difference Result 27577 states and 43922 transitions. [2024-11-24 01:18:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:18:18,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2024-11-24 01:18:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:18,311 INFO L225 Difference]: With dead ends: 27577 [2024-11-24 01:18:18,315 INFO L226 Difference]: Without dead ends: 13835 [2024-11-24 01:18:18,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:18:18,336 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 120 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:18,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 801 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13835 states. [2024-11-24 01:18:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13835 to 13833. [2024-11-24 01:18:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13833 states, 13832 states have (on average 1.5813331405436668) internal successors, (21873), 13832 states have internal predecessors, (21873), 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) [2024-11-24 01:18:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13833 states to 13833 states and 21873 transitions. [2024-11-24 01:18:18,640 INFO L78 Accepts]: Start accepts. Automaton has 13833 states and 21873 transitions. Word has length 73 [2024-11-24 01:18:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:18,641 INFO L471 AbstractCegarLoop]: Abstraction has 13833 states and 21873 transitions. [2024-11-24 01:18:18,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-24 01:18:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13833 states and 21873 transitions. [2024-11-24 01:18:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:18:18,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:18,642 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:18,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:18:18,643 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:18,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:18,643 INFO L85 PathProgramCache]: Analyzing trace with hash -833180180, now seen corresponding path program 1 times [2024-11-24 01:18:18,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:18,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259722112] [2024-11-24 01:18:18,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:18,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:19,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259722112] [2024-11-24 01:18:19,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259722112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:19,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:19,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:18:19,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129228324] [2024-11-24 01:18:19,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:19,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:18:19,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:19,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:18:19,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:19,011 INFO L87 Difference]: Start difference. First operand 13833 states and 21873 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-24 01:18:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:19,225 INFO L93 Difference]: Finished difference Result 39890 states and 63222 transitions. [2024-11-24 01:18:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:18:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2024-11-24 01:18:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:19,350 INFO L225 Difference]: With dead ends: 39890 [2024-11-24 01:18:19,350 INFO L226 Difference]: Without dead ends: 26148 [2024-11-24 01:18:19,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:18:19,358 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 235 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:19,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 612 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26148 states. [2024-11-24 01:18:19,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26148 to 26146. [2024-11-24 01:18:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26146 states, 26145 states have (on average 1.5704341174220693) internal successors, (41059), 26145 states have internal predecessors, (41059), 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) [2024-11-24 01:18:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26146 states to 26146 states and 41059 transitions. [2024-11-24 01:18:19,765 INFO L78 Accepts]: Start accepts. Automaton has 26146 states and 41059 transitions. Word has length 76 [2024-11-24 01:18:19,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:19,766 INFO L471 AbstractCegarLoop]: Abstraction has 26146 states and 41059 transitions. [2024-11-24 01:18:19,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-24 01:18:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 26146 states and 41059 transitions. [2024-11-24 01:18:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:18:19,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:19,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:19,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:18:19,767 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:19,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash -60691096, now seen corresponding path program 1 times [2024-11-24 01:18:19,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775503090] [2024-11-24 01:18:19,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775503090] [2024-11-24 01:18:20,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775503090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:20,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:20,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:18:20,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834537646] [2024-11-24 01:18:20,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:20,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:18:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:20,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:18:20,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:20,317 INFO L87 Difference]: Start difference. First operand 26146 states and 41059 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-24 01:18:20,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:20,458 INFO L93 Difference]: Finished difference Result 26922 states and 42221 transitions. [2024-11-24 01:18:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:18:20,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2024-11-24 01:18:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:20,494 INFO L225 Difference]: With dead ends: 26922 [2024-11-24 01:18:20,494 INFO L226 Difference]: Without dead ends: 26920 [2024-11-24 01:18:20,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:20,504 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:20,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 867 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26920 states. [2024-11-24 01:18:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26920 to 26920. [2024-11-24 01:18:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26920 states, 26919 states have (on average 1.553698131431331) internal successors, (41824), 26919 states have internal predecessors, (41824), 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) [2024-11-24 01:18:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26920 states to 26920 states and 41824 transitions. [2024-11-24 01:18:21,129 INFO L78 Accepts]: Start accepts. Automaton has 26920 states and 41824 transitions. Word has length 77 [2024-11-24 01:18:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:21,129 INFO L471 AbstractCegarLoop]: Abstraction has 26920 states and 41824 transitions. [2024-11-24 01:18:21,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-24 01:18:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 26920 states and 41824 transitions. [2024-11-24 01:18:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:18:21,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:21,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:21,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:18:21,136 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:21,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1256747651, now seen corresponding path program 1 times [2024-11-24 01:18:21,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:21,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670257958] [2024-11-24 01:18:21,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:21,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:18:21,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:21,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670257958] [2024-11-24 01:18:21,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670257958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:21,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:21,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:18:21,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315511878] [2024-11-24 01:18:21,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:21,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:18:21,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:21,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:18:21,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:21,494 INFO L87 Difference]: Start difference. First operand 26920 states and 41824 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-11-24 01:18:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:21,890 INFO L93 Difference]: Finished difference Result 70172 states and 109184 transitions. [2024-11-24 01:18:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:18:21,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 101 [2024-11-24 01:18:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:21,977 INFO L225 Difference]: With dead ends: 70172 [2024-11-24 01:18:21,977 INFO L226 Difference]: Without dead ends: 54605 [2024-11-24 01:18:22,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:18:22,001 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 551 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:22,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1021 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:18:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54605 states. [2024-11-24 01:18:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54605 to 41816. [2024-11-24 01:18:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41816 states, 41815 states have (on average 1.5512615090278608) internal successors, (64866), 41815 states have internal predecessors, (64866), 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) [2024-11-24 01:18:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41816 states to 41816 states and 64866 transitions. [2024-11-24 01:18:22,812 INFO L78 Accepts]: Start accepts. Automaton has 41816 states and 64866 transitions. Word has length 101 [2024-11-24 01:18:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:22,813 INFO L471 AbstractCegarLoop]: Abstraction has 41816 states and 64866 transitions. [2024-11-24 01:18:22,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-11-24 01:18:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 41816 states and 64866 transitions. [2024-11-24 01:18:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:18:22,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:22,816 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:22,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:18:22,816 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:22,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1943637733, now seen corresponding path program 1 times [2024-11-24 01:18:22,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:22,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753333886] [2024-11-24 01:18:22,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:22,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:18:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753333886] [2024-11-24 01:18:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753333886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:23,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:23,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:18:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200465949] [2024-11-24 01:18:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:23,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:18:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:23,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:18:23,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:23,306 INFO L87 Difference]: Start difference. First operand 41816 states and 64866 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-11-24 01:18:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:24,106 INFO L93 Difference]: Finished difference Result 76827 states and 119616 transitions. [2024-11-24 01:18:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:18:24,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 101 [2024-11-24 01:18:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:24,205 INFO L225 Difference]: With dead ends: 76827 [2024-11-24 01:18:24,205 INFO L226 Difference]: Without dead ends: 64509 [2024-11-24 01:18:24,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:18:24,227 INFO L435 NwaCegarLoop]: 359 mSDtfsCounter, 547 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:24,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1061 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:18:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64509 states. [2024-11-24 01:18:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64509 to 58325. [2024-11-24 01:18:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58325 states, 58324 states have (on average 1.5503737740895687) internal successors, (90424), 58324 states have internal predecessors, (90424), 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) [2024-11-24 01:18:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58325 states to 58325 states and 90424 transitions. [2024-11-24 01:18:25,206 INFO L78 Accepts]: Start accepts. Automaton has 58325 states and 90424 transitions. Word has length 101 [2024-11-24 01:18:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:25,208 INFO L471 AbstractCegarLoop]: Abstraction has 58325 states and 90424 transitions. [2024-11-24 01:18:25,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-11-24 01:18:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 58325 states and 90424 transitions. [2024-11-24 01:18:25,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:18:25,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:25,212 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:25,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:18:25,212 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:25,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1410355513, now seen corresponding path program 1 times [2024-11-24 01:18:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:25,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100794038] [2024-11-24 01:18:25,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 01:18:25,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100794038] [2024-11-24 01:18:25,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100794038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:25,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:25,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:18:25,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279405679] [2024-11-24 01:18:25,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:25,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:18:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:25,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:18:25,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:18:25,445 INFO L87 Difference]: Start difference. First operand 58325 states and 90424 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-24 01:18:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:26,187 INFO L93 Difference]: Finished difference Result 81715 states and 127240 transitions. [2024-11-24 01:18:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:18:26,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 101 [2024-11-24 01:18:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:26,299 INFO L225 Difference]: With dead ends: 81715 [2024-11-24 01:18:26,299 INFO L226 Difference]: Without dead ends: 69397 [2024-11-24 01:18:26,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:18:26,317 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 558 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:26,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1024 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69397 states. [2024-11-24 01:18:26,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69397 to 66939. [2024-11-24 01:18:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66939 states, 66938 states have (on average 1.5520631031700978) internal successors, (103892), 66938 states have internal predecessors, (103892), 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) [2024-11-24 01:18:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66939 states to 66939 states and 103892 transitions. [2024-11-24 01:18:27,161 INFO L78 Accepts]: Start accepts. Automaton has 66939 states and 103892 transitions. Word has length 101 [2024-11-24 01:18:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:27,161 INFO L471 AbstractCegarLoop]: Abstraction has 66939 states and 103892 transitions. [2024-11-24 01:18:27,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-24 01:18:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 66939 states and 103892 transitions. [2024-11-24 01:18:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:18:27,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:27,164 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:27,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:18:27,164 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:27,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash -366975703, now seen corresponding path program 1 times [2024-11-24 01:18:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457502425] [2024-11-24 01:18:27,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:18:27,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:27,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457502425] [2024-11-24 01:18:27,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457502425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:27,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:27,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:18:27,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416825847] [2024-11-24 01:18:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:27,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:18:27,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:27,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:18:27,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:27,315 INFO L87 Difference]: Start difference. First operand 66939 states and 103892 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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) [2024-11-24 01:18:27,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:27,941 INFO L93 Difference]: Finished difference Result 115185 states and 179337 transitions. [2024-11-24 01:18:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:18:27,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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) Word has length 102 [2024-11-24 01:18:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:28,092 INFO L225 Difference]: With dead ends: 115185 [2024-11-24 01:18:28,093 INFO L226 Difference]: Without dead ends: 89714 [2024-11-24 01:18:28,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:28,129 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 241 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:28,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 769 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89714 states. [2024-11-24 01:18:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89714 to 87258. [2024-11-24 01:18:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87258 states, 87257 states have (on average 1.5500418304548633) internal successors, (135252), 87257 states have internal predecessors, (135252), 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) [2024-11-24 01:18:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87258 states to 87258 states and 135252 transitions. [2024-11-24 01:18:29,655 INFO L78 Accepts]: Start accepts. Automaton has 87258 states and 135252 transitions. Word has length 102 [2024-11-24 01:18:29,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:29,656 INFO L471 AbstractCegarLoop]: Abstraction has 87258 states and 135252 transitions. [2024-11-24 01:18:29,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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) [2024-11-24 01:18:29,657 INFO L276 IsEmpty]: Start isEmpty. Operand 87258 states and 135252 transitions. [2024-11-24 01:18:29,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:18:29,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:29,660 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:29,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:18:29,660 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:29,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:29,661 INFO L85 PathProgramCache]: Analyzing trace with hash -715663657, now seen corresponding path program 1 times [2024-11-24 01:18:29,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:29,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406342994] [2024-11-24 01:18:29,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:29,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:18:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406342994] [2024-11-24 01:18:30,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406342994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:30,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:30,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38368537] [2024-11-24 01:18:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:30,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:30,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:30,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:30,023 INFO L87 Difference]: Start difference. First operand 87258 states and 135252 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) [2024-11-24 01:18:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:30,608 INFO L93 Difference]: Finished difference Result 199896 states and 310160 transitions. [2024-11-24 01:18:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:30,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) Word has length 102 [2024-11-24 01:18:30,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:31,202 INFO L225 Difference]: With dead ends: 199896 [2024-11-24 01:18:31,203 INFO L226 Difference]: Without dead ends: 154174 [2024-11-24 01:18:31,249 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 [2024-11-24 01:18:31,250 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 110 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:31,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 405 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154174 states. [2024-11-24 01:18:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154174 to 153896. [2024-11-24 01:18:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153896 states, 153895 states have (on average 1.5477370934728223) internal successors, (238189), 153895 states have internal predecessors, (238189), 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) [2024-11-24 01:18:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153896 states to 153896 states and 238189 transitions. [2024-11-24 01:18:33,267 INFO L78 Accepts]: Start accepts. Automaton has 153896 states and 238189 transitions. Word has length 102 [2024-11-24 01:18:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:33,268 INFO L471 AbstractCegarLoop]: Abstraction has 153896 states and 238189 transitions. [2024-11-24 01:18:33,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) [2024-11-24 01:18:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 153896 states and 238189 transitions. [2024-11-24 01:18:33,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:18:33,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:33,270 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:33,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:18:33,271 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:33,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1807507562, now seen corresponding path program 1 times [2024-11-24 01:18:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:33,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596679054] [2024-11-24 01:18:33,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:33,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596679054] [2024-11-24 01:18:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596679054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:33,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648737121] [2024-11-24 01:18:33,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:33,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:33,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:33,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:33,438 INFO L87 Difference]: Start difference. First operand 153896 states and 238189 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) [2024-11-24 01:18:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:34,655 INFO L93 Difference]: Finished difference Result 283815 states and 439695 transitions. [2024-11-24 01:18:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:34,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) Word has length 103 [2024-11-24 01:18:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:34,870 INFO L225 Difference]: With dead ends: 283815 [2024-11-24 01:18:34,870 INFO L226 Difference]: Without dead ends: 130010 [2024-11-24 01:18:34,945 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 [2024-11-24 01:18:34,945 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 94 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:34,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 494 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130010 states. [2024-11-24 01:18:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130010 to 129780. [2024-11-24 01:18:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129780 states, 129779 states have (on average 1.5411969579053622) internal successors, (200015), 129779 states have internal predecessors, (200015), 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) [2024-11-24 01:18:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129780 states to 129780 states and 200015 transitions. [2024-11-24 01:18:37,204 INFO L78 Accepts]: Start accepts. Automaton has 129780 states and 200015 transitions. Word has length 103 [2024-11-24 01:18:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:37,204 INFO L471 AbstractCegarLoop]: Abstraction has 129780 states and 200015 transitions. [2024-11-24 01:18:37,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) [2024-11-24 01:18:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 129780 states and 200015 transitions. [2024-11-24 01:18:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:18:37,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:37,207 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:37,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:18:37,207 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:37,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1546485684, now seen corresponding path program 1 times [2024-11-24 01:18:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324767857] [2024-11-24 01:18:37,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:37,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:37,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:37,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324767857] [2024-11-24 01:18:37,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324767857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:37,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:37,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:37,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324295494] [2024-11-24 01:18:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:37,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:37,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:37,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:37,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:37,350 INFO L87 Difference]: Start difference. First operand 129780 states and 200015 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) [2024-11-24 01:18:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:38,361 INFO L93 Difference]: Finished difference Result 184008 states and 283768 transitions. [2024-11-24 01:18:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:38,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) Word has length 103 [2024-11-24 01:18:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:38,444 INFO L225 Difference]: With dead ends: 184008 [2024-11-24 01:18:38,444 INFO L226 Difference]: Without dead ends: 54320 [2024-11-24 01:18:38,474 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 [2024-11-24 01:18:38,475 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 81 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:38,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 445 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54320 states. [2024-11-24 01:18:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54320 to 54250. [2024-11-24 01:18:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54250 states, 54249 states have (on average 1.5344983317664842) internal successors, (83245), 54249 states have internal predecessors, (83245), 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) [2024-11-24 01:18:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54250 states to 54250 states and 83245 transitions. [2024-11-24 01:18:39,271 INFO L78 Accepts]: Start accepts. Automaton has 54250 states and 83245 transitions. Word has length 103 [2024-11-24 01:18:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:39,272 INFO L471 AbstractCegarLoop]: Abstraction has 54250 states and 83245 transitions. [2024-11-24 01:18:39,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) [2024-11-24 01:18:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 54250 states and 83245 transitions. [2024-11-24 01:18:39,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:18:39,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:39,273 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:39,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:18:39,274 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:39,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1424886830, now seen corresponding path program 1 times [2024-11-24 01:18:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:39,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720075207] [2024-11-24 01:18:39,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:39,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:39,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720075207] [2024-11-24 01:18:39,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720075207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:39,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238192948] [2024-11-24 01:18:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:39,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:39,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:39,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:39,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:39,788 INFO L87 Difference]: Start difference. First operand 54250 states and 83245 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) [2024-11-24 01:18:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:39,996 INFO L93 Difference]: Finished difference Result 82288 states and 126362 transitions. [2024-11-24 01:18:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:39,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) Word has length 103 [2024-11-24 01:18:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:40,036 INFO L225 Difference]: With dead ends: 82288 [2024-11-24 01:18:40,036 INFO L226 Difference]: Without dead ends: 28130 [2024-11-24 01:18:40,061 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 [2024-11-24 01:18:40,063 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 68 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:40,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 396 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28130 states. [2024-11-24 01:18:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28130 to 27320. [2024-11-24 01:18:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27320 states, 27319 states have (on average 1.533877521139134) internal successors, (41904), 27319 states have internal predecessors, (41904), 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) [2024-11-24 01:18:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27320 states to 27320 states and 41904 transitions. [2024-11-24 01:18:40,399 INFO L78 Accepts]: Start accepts. Automaton has 27320 states and 41904 transitions. Word has length 103 [2024-11-24 01:18:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:40,400 INFO L471 AbstractCegarLoop]: Abstraction has 27320 states and 41904 transitions. [2024-11-24 01:18:40,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) [2024-11-24 01:18:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 27320 states and 41904 transitions. [2024-11-24 01:18:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 01:18:40,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:40,401 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:40,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:18:40,402 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:40,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash -242609529, now seen corresponding path program 1 times [2024-11-24 01:18:40,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:40,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289709092] [2024-11-24 01:18:40,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:40,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:18:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289709092] [2024-11-24 01:18:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289709092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:18:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362591387] [2024-11-24 01:18:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:40,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:18:40,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:40,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:18:40,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:40,778 INFO L87 Difference]: Start difference. First operand 27320 states and 41904 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-11-24 01:18:40,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:40,979 INFO L93 Difference]: Finished difference Result 68783 states and 105414 transitions. [2024-11-24 01:18:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:18:41,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 104 [2024-11-24 01:18:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:41,247 INFO L225 Difference]: With dead ends: 68783 [2024-11-24 01:18:41,248 INFO L226 Difference]: Without dead ends: 51622 [2024-11-24 01:18:41,260 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 [2024-11-24 01:18:41,263 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 409 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:41,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 634 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:41,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51622 states. [2024-11-24 01:18:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51622 to 43593. [2024-11-24 01:18:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43593 states, 43592 states have (on average 1.5334235639566893) internal successors, (66845), 43592 states have internal predecessors, (66845), 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) [2024-11-24 01:18:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43593 states to 43593 states and 66845 transitions. [2024-11-24 01:18:41,976 INFO L78 Accepts]: Start accepts. Automaton has 43593 states and 66845 transitions. Word has length 104 [2024-11-24 01:18:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:41,976 INFO L471 AbstractCegarLoop]: Abstraction has 43593 states and 66845 transitions. [2024-11-24 01:18:41,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-11-24 01:18:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 43593 states and 66845 transitions. [2024-11-24 01:18:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 01:18:41,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:41,978 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:41,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:18:41,978 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:41,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1432295037, now seen corresponding path program 1 times [2024-11-24 01:18:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:41,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455020820] [2024-11-24 01:18:41,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:41,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:18:42,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:42,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455020820] [2024-11-24 01:18:42,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455020820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:42,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:18:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822166325] [2024-11-24 01:18:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:42,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:18:42,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:42,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:18:42,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:42,418 INFO L87 Difference]: Start difference. First operand 43593 states and 66845 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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) [2024-11-24 01:18:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:43,062 INFO L93 Difference]: Finished difference Result 103687 states and 158840 transitions. [2024-11-24 01:18:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:18:43,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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) Word has length 104 [2024-11-24 01:18:43,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:43,146 INFO L225 Difference]: With dead ends: 103687 [2024-11-24 01:18:43,146 INFO L226 Difference]: Without dead ends: 77563 [2024-11-24 01:18:43,159 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 [2024-11-24 01:18:43,160 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 420 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:43,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 626 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:43,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77563 states. [2024-11-24 01:18:43,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77563 to 69105. [2024-11-24 01:18:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69105 states, 69104 states have (on average 1.533847534151424) internal successors, (105995), 69104 states have internal predecessors, (105995), 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) [2024-11-24 01:18:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69105 states to 69105 states and 105995 transitions. [2024-11-24 01:18:43,736 INFO L78 Accepts]: Start accepts. Automaton has 69105 states and 105995 transitions. Word has length 104 [2024-11-24 01:18:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:43,736 INFO L471 AbstractCegarLoop]: Abstraction has 69105 states and 105995 transitions. [2024-11-24 01:18:43,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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) [2024-11-24 01:18:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 69105 states and 105995 transitions. [2024-11-24 01:18:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:18:43,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:43,738 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:43,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:18:43,738 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:43,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1024826191, now seen corresponding path program 1 times [2024-11-24 01:18:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:43,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531377822] [2024-11-24 01:18:43,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:43,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:43,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:43,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531377822] [2024-11-24 01:18:43,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531377822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:43,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:43,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402399782] [2024-11-24 01:18:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:43,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:43,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:43,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:43,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:43,815 INFO L87 Difference]: Start difference. First operand 69105 states and 105995 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-11-24 01:18:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:44,620 INFO L93 Difference]: Finished difference Result 202098 states and 309471 transitions. [2024-11-24 01:18:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:44,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) Word has length 105 [2024-11-24 01:18:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:44,761 INFO L225 Difference]: With dead ends: 202098 [2024-11-24 01:18:44,761 INFO L226 Difference]: Without dead ends: 133086 [2024-11-24 01:18:44,802 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 [2024-11-24 01:18:44,802 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 171 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:44,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 543 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133086 states. [2024-11-24 01:18:46,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133086 to 133084. [2024-11-24 01:18:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133084 states, 133083 states have (on average 1.5194126973392545) internal successors, (202208), 133083 states have internal predecessors, (202208), 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) [2024-11-24 01:18:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133084 states to 133084 states and 202208 transitions. [2024-11-24 01:18:46,801 INFO L78 Accepts]: Start accepts. Automaton has 133084 states and 202208 transitions. Word has length 105 [2024-11-24 01:18:46,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:46,801 INFO L471 AbstractCegarLoop]: Abstraction has 133084 states and 202208 transitions. [2024-11-24 01:18:46,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-11-24 01:18:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 133084 states and 202208 transitions. [2024-11-24 01:18:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 01:18:46,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:46,803 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:46,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:18:46,803 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:46,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1315253317, now seen corresponding path program 1 times [2024-11-24 01:18:46,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:46,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478100846] [2024-11-24 01:18:46,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:46,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:18:46,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:46,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478100846] [2024-11-24 01:18:46,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478100846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:46,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:46,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172993990] [2024-11-24 01:18:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:46,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:46,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:46,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:46,930 INFO L87 Difference]: Start difference. First operand 133084 states and 202208 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-11-24 01:18:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:47,933 INFO L93 Difference]: Finished difference Result 388820 states and 589602 transitions. [2024-11-24 01:18:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:47,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) Word has length 105 [2024-11-24 01:18:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:48,281 INFO L225 Difference]: With dead ends: 388820 [2024-11-24 01:18:48,282 INFO L226 Difference]: Without dead ends: 255877 [2024-11-24 01:18:48,378 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 [2024-11-24 01:18:48,379 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 152 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:48,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 514 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255877 states. [2024-11-24 01:18:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255877 to 255875. [2024-11-24 01:18:51,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255875 states, 255874 states have (on average 1.5038300100830877) internal successors, (384791), 255874 states have internal predecessors, (384791), 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) [2024-11-24 01:18:51,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255875 states to 255875 states and 384791 transitions. [2024-11-24 01:18:51,949 INFO L78 Accepts]: Start accepts. Automaton has 255875 states and 384791 transitions. Word has length 105 [2024-11-24 01:18:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:51,949 INFO L471 AbstractCegarLoop]: Abstraction has 255875 states and 384791 transitions. [2024-11-24 01:18:51,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2024-11-24 01:18:51,950 INFO L276 IsEmpty]: Start isEmpty. Operand 255875 states and 384791 transitions. [2024-11-24 01:18:51,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 01:18:51,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:51,951 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:51,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 01:18:51,951 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:51,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:51,951 INFO L85 PathProgramCache]: Analyzing trace with hash 644182188, now seen corresponding path program 1 times [2024-11-24 01:18:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:51,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021613541] [2024-11-24 01:18:51,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 01:18:52,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:52,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021613541] [2024-11-24 01:18:52,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021613541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:52,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:52,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:52,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406311417] [2024-11-24 01:18:52,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:52,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:52,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:52,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:52,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:52,025 INFO L87 Difference]: Start difference. First operand 255875 states and 384791 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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)