./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/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_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/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 64bit --witnessprinter.graph.data.programhash ad00ea9d1d41cfebfc868ffc993c03755244c0b2041f4f1e6b0137835fa268e5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:01:00,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:01:00,692 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:01:00,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:01:00,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:01:00,757 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:01:00,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:01:00,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:01:00,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:01:00,761 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:01:00,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:01:00,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:01:00,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:01:00,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:01:00,763 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:01:00,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:01:00,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:01:00,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:01:00,766 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:01:00,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:01:00,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:01:00,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:01:00,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:01:00,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:01:00,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:01:00,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:01:00,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:01:00,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:01:00,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:01:00,767 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:01:00,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:01:00,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:01:00,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:01:00,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:01:00,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:01:00,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:01:00,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:01:00,768 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_d74de127-99b3-4ed1-9f04-a98f00e9af0c/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad00ea9d1d41cfebfc868ffc993c03755244c0b2041f4f1e6b0137835fa268e5 [2024-11-24 00:01:01,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:01:01,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:01:01,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:01:01,127 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:01:01,128 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:01:01,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.3.prop1-func-interl.c [2024-11-24 00:01:04,964 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/data/57ff40642/732942bb9afc4bafb51c7487ecf6595c/FLAG7cd115329 [2024-11-24 00:01:05,846 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:01:05,846 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.3.prop1-func-interl.c [2024-11-24 00:01:05,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/data/57ff40642/732942bb9afc4bafb51c7487ecf6595c/FLAG7cd115329 [2024-11-24 00:01:06,038 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/data/57ff40642/732942bb9afc4bafb51c7487ecf6595c [2024-11-24 00:01:06,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:01:06,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:01:06,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:01:06,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:01:06,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:01:06,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:01:06" (1/1) ... [2024-11-24 00:01:06,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d61f483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:06, skipping insertion in model container [2024-11-24 00:01:06,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:01:06" (1/1) ... [2024-11-24 00:01:06,291 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:01:06,700 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_d74de127-99b3-4ed1-9f04-a98f00e9af0c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.3.prop1-func-interl.c[1174,1187] [2024-11-24 00:01:08,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:01:08,342 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:01:08,357 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_d74de127-99b3-4ed1-9f04-a98f00e9af0c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synapse.3.prop1-func-interl.c[1174,1187] [2024-11-24 00:01:09,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:01:09,458 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:01:09,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09 WrapperNode [2024-11-24 00:01:09,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:01:09,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:01:09,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:01:09,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:01:09,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:09,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:13,698 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32238 [2024-11-24 00:01:13,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:01:13,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:01:13,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:01:13,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:01:13,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:13,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:14,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:15,324 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 00:01:15,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:15,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:16,367 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:16,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:16,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:16,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:16,982 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:17,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:01:17,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:01:17,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:01:17,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:01:17,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (1/1) ... [2024-11-24 00:01:17,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:01:17,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:01:17,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:01:17,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d74de127-99b3-4ed1-9f04-a98f00e9af0c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:01:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:01:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:01:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:01:17,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:01:20,166 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:01:20,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:03:37,835 INFO L? ?]: Removed 18845 outVars from TransFormulas that were not future-live. [2024-11-24 00:03:37,836 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:03:38,042 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:03:38,042 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:03:38,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:03:38 BoogieIcfgContainer [2024-11-24 00:03:38,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:03:38,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:03:38,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:03:38,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:03:38,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:01:06" (1/3) ... [2024-11-24 00:03:38,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18346121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:03:38, skipping insertion in model container [2024-11-24 00:03:38,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:01:09" (2/3) ... [2024-11-24 00:03:38,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18346121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:03:38, skipping insertion in model container [2024-11-24 00:03:38,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:03:38" (3/3) ... [2024-11-24 00:03:38,060 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synapse.3.prop1-func-interl.c [2024-11-24 00:03:38,080 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:03:38,084 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.synapse.3.prop1-func-interl.c that has 1 procedures, 11019 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:03:38,411 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:03:38,432 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;@49745c70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:03:38,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:03:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 11019 states, 11017 states have (on average 1.5009530725242806) internal successors, (16536), 11018 states have internal predecessors, (16536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:03:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-24 00:03:38,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:03:38,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:38,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:03:38,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:03:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash 299467485, now seen corresponding path program 1 times [2024-11-24 00:03:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:03:38,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445891785] [2024-11-24 00:03:38,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:03:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:03:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:03:42,606 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 00:03:42,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:03:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445891785] [2024-11-24 00:03:42,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445891785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:03:42,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:03:42,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:03:42,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888843269] [2024-11-24 00:03:42,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:03:42,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:03:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:03:42,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:03:42,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:03:42,685 INFO L87 Difference]: Start difference. First operand has 11019 states, 11017 states have (on average 1.5009530725242806) internal successors, (16536), 11018 states have internal predecessors, (16536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:04,845 INFO L93 Difference]: Finished difference Result 32539 states and 48838 transitions. [2024-11-24 00:04:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:04:04,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2024-11-24 00:04:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:04,958 INFO L225 Difference]: With dead ends: 32539 [2024-11-24 00:04:04,959 INFO L226 Difference]: Without dead ends: 21770 [2024-11-24 00:04:04,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:04:04,988 INFO L435 NwaCegarLoop]: 12791 mSDtfsCounter, 16067 mSDsluCounter, 38180 mSDsCounter, 0 mSdLazyCounter, 14784 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16067 SdHoareTripleChecker+Valid, 50971 SdHoareTripleChecker+Invalid, 14785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:04:04,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16067 Valid, 50971 Invalid, 14785 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 14784 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2024-11-24 00:04:05,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21770 states. [2024-11-24 00:04:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21770 to 11659. [2024-11-24 00:04:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11659 states, 11658 states have (on average 1.500686224052153) internal successors, (17495), 11658 states have internal predecessors, (17495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11659 states to 11659 states and 17495 transitions. [2024-11-24 00:04:05,569 INFO L78 Accepts]: Start accepts. Automaton has 11659 states and 17495 transitions. Word has length 455 [2024-11-24 00:04:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:05,576 INFO L471 AbstractCegarLoop]: Abstraction has 11659 states and 17495 transitions. [2024-11-24 00:04:05,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 11659 states and 17495 transitions. [2024-11-24 00:04:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-24 00:04:05,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:05,594 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:05,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:04:05,595 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:05,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:05,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1598567354, now seen corresponding path program 1 times [2024-11-24 00:04:05,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:05,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619310686] [2024-11-24 00:04:05,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:05,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:07,572 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 00:04:07,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:07,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619310686] [2024-11-24 00:04:07,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619310686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:04:07,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:04:07,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:04:07,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904742979] [2024-11-24 00:04:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:04:07,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:04:07,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:07,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:04:07,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:04:07,581 INFO L87 Difference]: Start difference. First operand 11659 states and 17495 transitions. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:07,953 INFO L93 Difference]: Finished difference Result 11663 states and 17499 transitions. [2024-11-24 00:04:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:04:07,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 457 [2024-11-24 00:04:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:08,016 INFO L225 Difference]: With dead ends: 11663 [2024-11-24 00:04:08,018 INFO L226 Difference]: Without dead ends: 11661 [2024-11-24 00:04:08,024 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 00:04:08,025 INFO L435 NwaCegarLoop]: 16530 mSDtfsCounter, 0 mSDsluCounter, 33054 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:04:08,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49584 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:04:08,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11661 states. [2024-11-24 00:04:08,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11661 to 11661. [2024-11-24 00:04:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11661 states, 11660 states have (on average 1.5006003430531731) internal successors, (17497), 11660 states have internal predecessors, (17497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11661 states to 11661 states and 17497 transitions. [2024-11-24 00:04:08,328 INFO L78 Accepts]: Start accepts. Automaton has 11661 states and 17497 transitions. Word has length 457 [2024-11-24 00:04:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:08,329 INFO L471 AbstractCegarLoop]: Abstraction has 11661 states and 17497 transitions. [2024-11-24 00:04:08,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 11661 states and 17497 transitions. [2024-11-24 00:04:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-24 00:04:08,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:08,349 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:08,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:04:08,349 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:08,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1982321500, now seen corresponding path program 1 times [2024-11-24 00:04:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283610077] [2024-11-24 00:04:08,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:08,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:09,688 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 00:04:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:09,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283610077] [2024-11-24 00:04:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283610077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:04:09,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:04:09,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:04:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435749833] [2024-11-24 00:04:09,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:04:09,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:04:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:09,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:04:09,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:04:09,696 INFO L87 Difference]: Start difference. First operand 11661 states and 17497 transitions. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:10,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:10,026 INFO L93 Difference]: Finished difference Result 22431 states and 33660 transitions. [2024-11-24 00:04:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:04:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 458 [2024-11-24 00:04:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:10,063 INFO L225 Difference]: With dead ends: 22431 [2024-11-24 00:04:10,064 INFO L226 Difference]: Without dead ends: 11663 [2024-11-24 00:04:10,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:04:10,080 INFO L435 NwaCegarLoop]: 16530 mSDtfsCounter, 0 mSDsluCounter, 33050 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49580 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:04:10,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49580 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:04:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11663 states. [2024-11-24 00:04:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11663 to 11663. [2024-11-24 00:04:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11663 states, 11662 states have (on average 1.5005144915108901) internal successors, (17499), 11662 states have internal predecessors, (17499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:10,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11663 states to 11663 states and 17499 transitions. [2024-11-24 00:04:10,792 INFO L78 Accepts]: Start accepts. Automaton has 11663 states and 17499 transitions. Word has length 458 [2024-11-24 00:04:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:10,797 INFO L471 AbstractCegarLoop]: Abstraction has 11663 states and 17499 transitions. [2024-11-24 00:04:10,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 11663 states and 17499 transitions. [2024-11-24 00:04:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-24 00:04:10,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:10,823 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:10,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:04:10,824 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:10,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1874579923, now seen corresponding path program 1 times [2024-11-24 00:04:10,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:10,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458293453] [2024-11-24 00:04:10,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:13,495 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 00:04:13,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:13,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458293453] [2024-11-24 00:04:13,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458293453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:04:13,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:04:13,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:04:13,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708638973] [2024-11-24 00:04:13,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:04:13,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:04:13,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:13,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:04:13,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:04:13,502 INFO L87 Difference]: Start difference. First operand 11663 states and 17499 transitions. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:15,122 INFO L93 Difference]: Finished difference Result 31718 states and 47597 transitions. [2024-11-24 00:04:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:04:15,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 459 [2024-11-24 00:04:15,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:15,254 INFO L225 Difference]: With dead ends: 31718 [2024-11-24 00:04:15,254 INFO L226 Difference]: Without dead ends: 20948 [2024-11-24 00:04:15,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:04:15,295 INFO L435 NwaCegarLoop]: 16524 mSDtfsCounter, 14826 mSDsluCounter, 65711 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14826 SdHoareTripleChecker+Valid, 82235 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:04:15,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14826 Valid, 82235 Invalid, 54 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:04:15,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20948 states. [2024-11-24 00:04:15,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20948 to 11666. [2024-11-24 00:04:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11666 states, 11665 states have (on average 1.500385769395628) internal successors, (17502), 11665 states have internal predecessors, (17502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11666 states to 11666 states and 17502 transitions. [2024-11-24 00:04:16,021 INFO L78 Accepts]: Start accepts. Automaton has 11666 states and 17502 transitions. Word has length 459 [2024-11-24 00:04:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:16,026 INFO L471 AbstractCegarLoop]: Abstraction has 11666 states and 17502 transitions. [2024-11-24 00:04:16,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 11666 states and 17502 transitions. [2024-11-24 00:04:17,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5811 [2024-11-24 00:04:17,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:17,164 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:17,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:04:17,164 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:17,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:17,178 INFO L85 PathProgramCache]: Analyzing trace with hash 448085692, now seen corresponding path program 1 times [2024-11-24 00:04:17,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:17,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716519806] [2024-11-24 00:04:17,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:17,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:04:58,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:58,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716519806] [2024-11-24 00:04:58,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716519806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:04:58,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:04:58,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:04:58,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181456830] [2024-11-24 00:04:58,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:04:58,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:04:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:58,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:04:58,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:04:58,718 INFO L87 Difference]: Start difference. First operand 11666 states and 17502 transitions. Second operand has 4 states, 4 states have (on average 1452.5) internal successors, (5810), 4 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:03,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:05:05,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:05:09,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:05:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:05:11,308 INFO L93 Difference]: Finished difference Result 22436 states and 33664 transitions. [2024-11-24 00:05:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:05:11,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1452.5) internal successors, (5810), 4 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5810 [2024-11-24 00:05:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:05:11,337 INFO L225 Difference]: With dead ends: 22436 [2024-11-24 00:05:11,337 INFO L226 Difference]: Without dead ends: 11666 [2024-11-24 00:05:11,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:05:11,349 INFO L435 NwaCegarLoop]: 16516 mSDtfsCounter, 16076 mSDsluCounter, 16514 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16076 SdHoareTripleChecker+Valid, 33030 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:05:11,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16076 Valid, 33030 Invalid, 29 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2024-11-24 00:05:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11666 states. [2024-11-24 00:05:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 11666. [2024-11-24 00:05:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11666 states, 11665 states have (on average 1.5003000428632662) internal successors, (17501), 11665 states have internal predecessors, (17501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11666 states to 11666 states and 17501 transitions. [2024-11-24 00:05:11,570 INFO L78 Accepts]: Start accepts. Automaton has 11666 states and 17501 transitions. Word has length 5810 [2024-11-24 00:05:11,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:05:11,573 INFO L471 AbstractCegarLoop]: Abstraction has 11666 states and 17501 transitions. [2024-11-24 00:05:11,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1452.5) internal successors, (5810), 4 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 11666 states and 17501 transitions. [2024-11-24 00:05:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5812 [2024-11-24 00:05:11,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:05:11,862 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:11,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:05:11,863 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:05:11,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:05:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2140490534, now seen corresponding path program 1 times [2024-11-24 00:05:11,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:05:11,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076992145] [2024-11-24 00:05:11,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:05:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms