./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.04.cil-1.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_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/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_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/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_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/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 d4710f8f3a918a0191222414f5c33a367ff98c09c2e8598fa3213223c4c35dba --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:35:52,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:35:52,898 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:35:52,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:35:52,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:35:52,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:35:52,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:35:52,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:35:52,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:35:52,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:35:52,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:35:52,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:35:52,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:35:52,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:35:52,942 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:35:52,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:35:52,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:35:52,943 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:35:52,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:35:52,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:35:52,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:35:52,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:35:52,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:35:52,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:35:52,944 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:35:52,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:35:52,944 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:35:52,945 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:35:52,945 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:35:52,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:35:52,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:35:52,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:35:52,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:35:52,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:35:52,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:35:52,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:35:52,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:35:52,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:35:52,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:35:52,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:35:52,947 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:35:52,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:35:52,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:35:52,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:35:52,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:35:52,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:35:52,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:35:52,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:35:52,948 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_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/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 -> d4710f8f3a918a0191222414f5c33a367ff98c09c2e8598fa3213223c4c35dba [2024-11-24 01:35:53,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:35:53,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:35:53,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:35:53,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:35:53,313 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:35:53,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/systemc/token_ring.04.cil-1.c [2024-11-24 01:35:57,000 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/data/e18f6e3c4/b5a29f22552e47e9a1a99bec0ddc50f1/FLAG77cd9e424 [2024-11-24 01:35:57,305 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:35:57,305 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/sv-benchmarks/c/systemc/token_ring.04.cil-1.c [2024-11-24 01:35:57,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/data/e18f6e3c4/b5a29f22552e47e9a1a99bec0ddc50f1/FLAG77cd9e424 [2024-11-24 01:35:57,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/data/e18f6e3c4/b5a29f22552e47e9a1a99bec0ddc50f1 [2024-11-24 01:35:57,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:35:57,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:35:57,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:35:57,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:35:57,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:35:57,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2dc4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57, skipping insertion in model container [2024-11-24 01:35:57,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:35:57,603 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_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/sv-benchmarks/c/systemc/token_ring.04.cil-1.c[671,684] [2024-11-24 01:35:57,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:35:57,748 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:35:57,760 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_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/sv-benchmarks/c/systemc/token_ring.04.cil-1.c[671,684] [2024-11-24 01:35:57,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:35:57,825 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:35:57,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57 WrapperNode [2024-11-24 01:35:57,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:35:57,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:35:57,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:35:57,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:35:57,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,910 INFO L138 Inliner]: procedures = 36, calls = 43, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 392 [2024-11-24 01:35:57,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:35:57,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:35:57,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:35:57,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:35:57,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,950 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 01:35:57,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,959 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:35:57,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:35:57,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:35:57,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:35:57,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (1/1) ... [2024-11-24 01:35:57,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:35:58,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:58,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:35:58,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26c7fa9c-e3cf-49bc-a3e3-9117b7e7297b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:35:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:35:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-24 01:35:58,069 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-24 01:35:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-24 01:35:58,069 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-24 01:35:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-24 01:35:58,070 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-24 01:35:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-24 01:35:58,070 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-24 01:35:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-24 01:35:58,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-24 01:35:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:35:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-24 01:35:58,071 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-24 01:35:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:35:58,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:35:58,202 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:35:58,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:35:59,017 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-11-24 01:35:59,018 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:35:59,042 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:35:59,045 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-24 01:35:59,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:35:59 BoogieIcfgContainer [2024-11-24 01:35:59,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:35:59,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:35:59,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:35:59,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:35:59,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:35:57" (1/3) ... [2024-11-24 01:35:59,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ed01ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:35:59, skipping insertion in model container [2024-11-24 01:35:59,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:35:57" (2/3) ... [2024-11-24 01:35:59,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ed01ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:35:59, skipping insertion in model container [2024-11-24 01:35:59,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:35:59" (3/3) ... [2024-11-24 01:35:59,063 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-1.c [2024-11-24 01:35:59,081 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:35:59,084 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.04.cil-1.c that has 7 procedures, 180 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-24 01:35:59,220 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:35:59,239 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;@51025c9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:35:59,240 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:35:59,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 155 states have (on average 1.6064516129032258) internal successors, (249), 156 states have internal predecessors, (249), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 01:35:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:35:59,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:59,264 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:59,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:59,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash -684394821, now seen corresponding path program 1 times [2024-11-24 01:35:59,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:59,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197421479] [2024-11-24 01:35:59,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:59,697 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 01:35:59,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:59,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197421479] [2024-11-24 01:35:59,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197421479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:59,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:59,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:35:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971332525] [2024-11-24 01:35:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:59,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:35:59,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:59,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:35:59,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:35:59,731 INFO L87 Difference]: Start difference. First operand has 180 states, 155 states have (on average 1.6064516129032258) internal successors, (249), 156 states have internal predecessors, (249), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:35:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:59,813 INFO L93 Difference]: Finished difference Result 349 states and 553 transitions. [2024-11-24 01:35:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:35:59,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:35:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:59,827 INFO L225 Difference]: With dead ends: 349 [2024-11-24 01:35:59,828 INFO L226 Difference]: Without dead ends: 175 [2024-11-24 01:35:59,832 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 01:35:59,836 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 259 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:59,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 267 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:35:59,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-24 01:35:59,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-24 01:35:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 150 states have (on average 1.52) internal successors, (228), 151 states have internal predecessors, (228), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-24 01:35:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 264 transitions. [2024-11-24 01:35:59,907 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 264 transitions. Word has length 87 [2024-11-24 01:35:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:59,909 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 264 transitions. [2024-11-24 01:35:59,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:35:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 264 transitions. [2024-11-24 01:35:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:35:59,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:59,914 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:59,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:35:59,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:59,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:59,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1392942077, now seen corresponding path program 1 times [2024-11-24 01:35:59,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:59,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086244113] [2024-11-24 01:35:59,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:59,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:00,352 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 01:36:00,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:00,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086244113] [2024-11-24 01:36:00,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086244113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:00,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:00,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:36:00,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725695447] [2024-11-24 01:36:00,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:00,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:36:00,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:00,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:36:00,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:36:00,359 INFO L87 Difference]: Start difference. First operand 175 states and 264 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:01,173 INFO L93 Difference]: Finished difference Result 517 states and 790 transitions. [2024-11-24 01:36:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:36:01,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:01,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:01,181 INFO L225 Difference]: With dead ends: 517 [2024-11-24 01:36:01,181 INFO L226 Difference]: Without dead ends: 354 [2024-11-24 01:36:01,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:01,188 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 469 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:01,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 703 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:36:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-24 01:36:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2024-11-24 01:36:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 298 states have internal predecessors, (454), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-11-24 01:36:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 517 transitions. [2024-11-24 01:36:01,251 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 517 transitions. Word has length 87 [2024-11-24 01:36:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:01,252 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 517 transitions. [2024-11-24 01:36:01,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 517 transitions. [2024-11-24 01:36:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:01,255 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:01,255 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:01,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:36:01,256 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:01,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:01,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1405127553, now seen corresponding path program 1 times [2024-11-24 01:36:01,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:01,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241421110] [2024-11-24 01:36:01,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:01,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:01,640 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 01:36:01,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241421110] [2024-11-24 01:36:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241421110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:01,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:36:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226685770] [2024-11-24 01:36:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:01,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:36:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:01,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:36:01,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:01,644 INFO L87 Difference]: Start difference. First operand 341 states and 517 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:02,576 INFO L93 Difference]: Finished difference Result 878 states and 1345 transitions. [2024-11-24 01:36:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:36:02,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:02,586 INFO L225 Difference]: With dead ends: 878 [2024-11-24 01:36:02,586 INFO L226 Difference]: Without dead ends: 549 [2024-11-24 01:36:02,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:36:02,589 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 463 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:02,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1318 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:36:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-24 01:36:02,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 496. [2024-11-24 01:36:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 431 states have (on average 1.5266821345707657) internal successors, (658), 434 states have internal predecessors, (658), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-24 01:36:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 750 transitions. [2024-11-24 01:36:02,677 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 750 transitions. Word has length 87 [2024-11-24 01:36:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:02,680 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 750 transitions. [2024-11-24 01:36:02,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:02,680 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 750 transitions. [2024-11-24 01:36:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:02,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:02,688 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:02,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:36:02,688 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:02,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:02,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1482028351, now seen corresponding path program 1 times [2024-11-24 01:36:02,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:02,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126692424] [2024-11-24 01:36:02,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:02,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:03,026 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 01:36:03,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:03,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126692424] [2024-11-24 01:36:03,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126692424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:03,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:03,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:36:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543001931] [2024-11-24 01:36:03,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:03,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:36:03,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:03,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:36:03,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:03,031 INFO L87 Difference]: Start difference. First operand 496 states and 750 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:03,776 INFO L93 Difference]: Finished difference Result 1365 states and 2087 transitions. [2024-11-24 01:36:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:36:03,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:03,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:03,784 INFO L225 Difference]: With dead ends: 1365 [2024-11-24 01:36:03,784 INFO L226 Difference]: Without dead ends: 881 [2024-11-24 01:36:03,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:36:03,789 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 474 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:03,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 919 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:36:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-24 01:36:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 823. [2024-11-24 01:36:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 716 states have (on average 1.526536312849162) internal successors, (1093), 723 states have internal predecessors, (1093), 70 states have call successors, (70), 30 states have call predecessors, (70), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2024-11-24 01:36:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1249 transitions. [2024-11-24 01:36:03,903 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1249 transitions. Word has length 87 [2024-11-24 01:36:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:03,903 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1249 transitions. [2024-11-24 01:36:03,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1249 transitions. [2024-11-24 01:36:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:03,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:03,912 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:03,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:36:03,912 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:03,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash 514677697, now seen corresponding path program 1 times [2024-11-24 01:36:03,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:03,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027102497] [2024-11-24 01:36:03,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:03,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:04,218 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 01:36:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027102497] [2024-11-24 01:36:04,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027102497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:04,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:04,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:36:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419494403] [2024-11-24 01:36:04,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:04,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:36:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:04,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:36:04,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:04,223 INFO L87 Difference]: Start difference. First operand 823 states and 1249 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:05,107 INFO L93 Difference]: Finished difference Result 2402 states and 3700 transitions. [2024-11-24 01:36:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:36:05,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:05,123 INFO L225 Difference]: With dead ends: 2402 [2024-11-24 01:36:05,123 INFO L226 Difference]: Without dead ends: 1591 [2024-11-24 01:36:05,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:36:05,128 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 453 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:05,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1290 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:36:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2024-11-24 01:36:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1522. [2024-11-24 01:36:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1325 states have (on average 1.5343396226415094) internal successors, (2033), 1346 states have internal predecessors, (2033), 122 states have call successors, (122), 54 states have call predecessors, (122), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2024-11-24 01:36:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2341 transitions. [2024-11-24 01:36:05,363 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2341 transitions. Word has length 87 [2024-11-24 01:36:05,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:05,364 INFO L471 AbstractCegarLoop]: Abstraction has 1522 states and 2341 transitions. [2024-11-24 01:36:05,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2341 transitions. [2024-11-24 01:36:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:05,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:05,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:05,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:36:05,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:05,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1871831809, now seen corresponding path program 1 times [2024-11-24 01:36:05,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10871846] [2024-11-24 01:36:05,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:05,614 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 01:36:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:05,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10871846] [2024-11-24 01:36:05,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10871846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:05,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:36:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172707286] [2024-11-24 01:36:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:05,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:36:05,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:05,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:36:05,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:05,619 INFO L87 Difference]: Start difference. First operand 1522 states and 2341 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:06,642 INFO L93 Difference]: Finished difference Result 4637 states and 7290 transitions. [2024-11-24 01:36:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:36:06,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:06,665 INFO L225 Difference]: With dead ends: 4637 [2024-11-24 01:36:06,665 INFO L226 Difference]: Without dead ends: 3127 [2024-11-24 01:36:06,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:36:06,672 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 448 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:06,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1278 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:36:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2024-11-24 01:36:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 3037. [2024-11-24 01:36:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 2642 states have (on average 1.5476911430734293) internal successors, (4089), 2709 states have internal predecessors, (4089), 226 states have call successors, (226), 102 states have call predecessors, (226), 168 states have return successors, (482), 241 states have call predecessors, (482), 226 states have call successors, (482) [2024-11-24 01:36:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4797 transitions. [2024-11-24 01:36:07,012 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4797 transitions. Word has length 87 [2024-11-24 01:36:07,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:07,013 INFO L471 AbstractCegarLoop]: Abstraction has 3037 states and 4797 transitions. [2024-11-24 01:36:07,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:07,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4797 transitions. [2024-11-24 01:36:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:07,017 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:07,018 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:07,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:36:07,018 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:07,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:07,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1930509313, now seen corresponding path program 1 times [2024-11-24 01:36:07,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:07,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210761260] [2024-11-24 01:36:07,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:07,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:07,211 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 01:36:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210761260] [2024-11-24 01:36:07,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210761260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:07,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:07,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:36:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391143833] [2024-11-24 01:36:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:07,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:36:07,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:07,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:36:07,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:07,214 INFO L87 Difference]: Start difference. First operand 3037 states and 4797 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:08,605 INFO L93 Difference]: Finished difference Result 10044 states and 16325 transitions. [2024-11-24 01:36:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:36:08,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:08,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:08,661 INFO L225 Difference]: With dead ends: 10044 [2024-11-24 01:36:08,661 INFO L226 Difference]: Without dead ends: 7019 [2024-11-24 01:36:08,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:36:08,675 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 577 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:08,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1253 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:36:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2024-11-24 01:36:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 6316. [2024-11-24 01:36:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6316 states, 5487 states have (on average 1.5660652451248405) internal successors, (8593), 5700 states have internal predecessors, (8593), 418 states have call successors, (418), 198 states have call predecessors, (418), 410 states have return successors, (1442), 449 states have call predecessors, (1442), 418 states have call successors, (1442) [2024-11-24 01:36:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6316 states to 6316 states and 10453 transitions. [2024-11-24 01:36:09,430 INFO L78 Accepts]: Start accepts. Automaton has 6316 states and 10453 transitions. Word has length 87 [2024-11-24 01:36:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:09,431 INFO L471 AbstractCegarLoop]: Abstraction has 6316 states and 10453 transitions. [2024-11-24 01:36:09,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6316 states and 10453 transitions. [2024-11-24 01:36:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:09,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:09,442 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:09,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:36:09,442 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:09,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1410517825, now seen corresponding path program 1 times [2024-11-24 01:36:09,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631473518] [2024-11-24 01:36:09,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:09,648 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 01:36:09,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631473518] [2024-11-24 01:36:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631473518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:09,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:36:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988960667] [2024-11-24 01:36:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:09,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:36:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:09,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:36:09,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:09,654 INFO L87 Difference]: Start difference. First operand 6316 states and 10453 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:11,530 INFO L93 Difference]: Finished difference Result 20943 states and 36323 transitions. [2024-11-24 01:36:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:36:11,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:11,666 INFO L225 Difference]: With dead ends: 20943 [2024-11-24 01:36:11,666 INFO L226 Difference]: Without dead ends: 14639 [2024-11-24 01:36:11,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:36:11,696 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 470 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:11,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1237 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:36:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14639 states. [2024-11-24 01:36:13,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14639 to 13427. [2024-11-24 01:36:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 11584 states have (on average 1.5798515193370166) internal successors, (18301), 12251 states have internal predecessors, (18301), 786 states have call successors, (786), 390 states have call predecessors, (786), 1056 states have return successors, (4882), 849 states have call predecessors, (4882), 786 states have call successors, (4882) [2024-11-24 01:36:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 23969 transitions. [2024-11-24 01:36:13,579 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 23969 transitions. Word has length 87 [2024-11-24 01:36:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:13,580 INFO L471 AbstractCegarLoop]: Abstraction has 13427 states and 23969 transitions. [2024-11-24 01:36:13,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 23969 transitions. [2024-11-24 01:36:13,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:13,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:13,595 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:13,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:36:13,596 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:13,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:13,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1668295745, now seen corresponding path program 1 times [2024-11-24 01:36:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769933702] [2024-11-24 01:36:13,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:13,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:13,771 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 01:36:13,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:13,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769933702] [2024-11-24 01:36:13,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769933702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:13,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:13,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:36:13,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726331027] [2024-11-24 01:36:13,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:13,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:36:13,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:13,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:36:13,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:13,773 INFO L87 Difference]: Start difference. First operand 13427 states and 23969 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:16,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:16,851 INFO L93 Difference]: Finished difference Result 43242 states and 83473 transitions. [2024-11-24 01:36:16,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:36:16,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:16,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:17,125 INFO L225 Difference]: With dead ends: 43242 [2024-11-24 01:36:17,125 INFO L226 Difference]: Without dead ends: 29827 [2024-11-24 01:36:17,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:36:17,208 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 474 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:17,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1215 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:36:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29827 states. [2024-11-24 01:36:20,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29827 to 28653. [2024-11-24 01:36:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28653 states, 24328 states have (on average 1.5755919105557383) internal successors, (38331), 26389 states have internal predecessors, (38331), 1490 states have call successors, (1490), 774 states have call predecessors, (1490), 2834 states have return successors, (17874), 1617 states have call predecessors, (17874), 1490 states have call successors, (17874) [2024-11-24 01:36:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28653 states to 28653 states and 57695 transitions. [2024-11-24 01:36:20,941 INFO L78 Accepts]: Start accepts. Automaton has 28653 states and 57695 transitions. Word has length 87 [2024-11-24 01:36:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:20,944 INFO L471 AbstractCegarLoop]: Abstraction has 28653 states and 57695 transitions. [2024-11-24 01:36:20,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 28653 states and 57695 transitions. [2024-11-24 01:36:20,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:20,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:20,968 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:20,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:36:20,968 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:20,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash -17884093, now seen corresponding path program 1 times [2024-11-24 01:36:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:20,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153217737] [2024-11-24 01:36:20,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:21,147 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 01:36:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153217737] [2024-11-24 01:36:21,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153217737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:21,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:21,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:36:21,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539790586] [2024-11-24 01:36:21,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:21,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:36:21,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:21,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:36:21,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:36:21,149 INFO L87 Difference]: Start difference. First operand 28653 states and 57695 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:26,421 INFO L93 Difference]: Finished difference Result 91040 states and 209093 transitions. [2024-11-24 01:36:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:36:26,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:26,958 INFO L225 Difference]: With dead ends: 91040 [2024-11-24 01:36:26,958 INFO L226 Difference]: Without dead ends: 62399 [2024-11-24 01:36:27,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:36:27,321 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 428 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:27,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1203 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:36:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62399 states. [2024-11-24 01:36:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62399 to 61100. [2024-11-24 01:36:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61100 states, 50417 states have (on average 1.5510442906162605) internal successors, (78199), 56724 states have internal predecessors, (78199), 2834 states have call successors, (2834), 1542 states have call predecessors, (2834), 7848 states have return successors, (68370), 3089 states have call predecessors, (68370), 2834 states have call successors, (68370) [2024-11-24 01:36:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61100 states to 61100 states and 149403 transitions. [2024-11-24 01:36:36,050 INFO L78 Accepts]: Start accepts. Automaton has 61100 states and 149403 transitions. Word has length 87 [2024-11-24 01:36:36,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:36,050 INFO L471 AbstractCegarLoop]: Abstraction has 61100 states and 149403 transitions. [2024-11-24 01:36:36,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:36,051 INFO L276 IsEmpty]: Start isEmpty. Operand 61100 states and 149403 transitions. [2024-11-24 01:36:36,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:36:36,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:36,105 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:36,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:36:36,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:36,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash -72276991, now seen corresponding path program 1 times [2024-11-24 01:36:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729563687] [2024-11-24 01:36:36,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:36,229 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 01:36:36,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:36,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729563687] [2024-11-24 01:36:36,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729563687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:36,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:36,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:36:36,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630200211] [2024-11-24 01:36:36,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:36,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:36:36,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:36,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:36:36,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:36:36,231 INFO L87 Difference]: Start difference. First operand 61100 states and 149403 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-24 01:36:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:43,378 INFO L93 Difference]: Finished difference Result 156511 states and 379594 transitions. [2024-11-24 01:36:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:36:43,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2024-11-24 01:36:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:44,471 INFO L225 Difference]: With dead ends: 156511 [2024-11-24 01:36:44,471 INFO L226 Difference]: Without dead ends: 95424 [2024-11-24 01:36:44,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:36:44,887 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 449 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:44,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 909 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:36:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95424 states.