./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:05:45,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:05:45,443 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:05:45,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:05:45,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:05:45,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:05:45,478 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:05:45,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:05:45,479 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:05:45,481 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:05:45,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:05:45,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:05:45,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:05:45,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:05:45,484 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:05:45,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:05:45,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:05:45,485 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:05:45,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:05:45,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:05:45,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:05:45,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:05:45,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:05:45,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:05:45,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:05:45,491 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:05:45,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:05:45,492 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:05:45,492 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:05:45,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:05:45,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:05:45,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:05:45,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:05:45,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:05:45,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:05:45,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:05:45,494 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:05:45,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:05:45,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:05:45,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:05:45,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:05:45,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:05:45,496 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 [2024-11-16 09:05:45,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:05:45,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:05:45,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:05:45,746 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:05:45,747 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:05:45,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2024-11-16 09:05:47,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:05:47,798 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:05:47,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2024-11-16 09:05:47,843 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd7fd82e/66f179a283034eb4a1d1bfef248ddcf9/FLAGa96f9f695 [2024-11-16 09:05:47,860 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd7fd82e/66f179a283034eb4a1d1bfef248ddcf9 [2024-11-16 09:05:47,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:05:47,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:05:47,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:05:47,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:05:47,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:05:47,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:05:47" (1/1) ... [2024-11-16 09:05:47,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae3f85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:47, skipping insertion in model container [2024-11-16 09:05:47,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:05:47" (1/1) ... [2024-11-16 09:05:48,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:05:49,577 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2024-11-16 09:05:49,608 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2024-11-16 09:05:49,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:05:49,791 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:05:50,508 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2024-11-16 09:05:50,515 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2024-11-16 09:05:50,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:05:50,584 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:05:50,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50 WrapperNode [2024-11-16 09:05:50,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:05:50,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:05:50,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:05:50,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:05:50,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:50,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,025 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12633 [2024-11-16 09:05:51,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:05:51,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:05:51,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:05:51,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:05:51,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,316 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]. [2024-11-16 09:05:51,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,531 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:05:51,651 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:05:51,652 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:05:51,652 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:05:51,653 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (1/1) ... [2024-11-16 09:05:51,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:05:51,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:51,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:05:51,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:05:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:05:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-16 09:05:51,737 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-16 09:05:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-16 09:05:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-16 09:05:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-16 09:05:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-16 09:05:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 09:05:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 09:05:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-16 09:05:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-16 09:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-16 09:05:51,740 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-16 09:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-16 09:05:51,740 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-16 09:05:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:05:51,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:05:51,853 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:05:51,855 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:05:59,172 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2024-11-16 09:05:59,172 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2024-11-16 09:05:59,173 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2024-11-16 09:05:59,174 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2024-11-16 09:05:59,174 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2024-11-16 09:05:59,174 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2024-11-16 09:05:59,174 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2024-11-16 09:05:59,415 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2024-11-16 09:05:59,415 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:05:59,469 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:05:59,469 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:05:59,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:05:59 BoogieIcfgContainer [2024-11-16 09:05:59,470 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:05:59,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:05:59,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:05:59,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:05:59,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:05:47" (1/3) ... [2024-11-16 09:05:59,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ad23d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:05:59, skipping insertion in model container [2024-11-16 09:05:59,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:05:50" (2/3) ... [2024-11-16 09:05:59,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ad23d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:05:59, skipping insertion in model container [2024-11-16 09:05:59,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:05:59" (3/3) ... [2024-11-16 09:05:59,480 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.02.cil-2.c [2024-11-16 09:05:59,496 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:05:59,496 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:05:59,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:05:59,619 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;@38e77625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:05:59,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:05:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 2349 states, 2321 states have (on average 1.8479103834554071) internal successors, (4289), 2326 states have internal predecessors, (4289), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-16 09:05:59,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 09:05:59,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:59,644 INFO L215 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] [2024-11-16 09:05:59,645 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:59,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:59,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1351742159, now seen corresponding path program 1 times [2024-11-16 09:05:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:59,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811741229] [2024-11-16 09:05:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:00,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:00,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:00,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:00,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:00,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:06:00,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811741229] [2024-11-16 09:06:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811741229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:00,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:06:00,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:06:00,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678766598] [2024-11-16 09:06:00,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:00,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:06:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:06:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:06:00,238 INFO L87 Difference]: Start difference. First operand has 2349 states, 2321 states have (on average 1.8479103834554071) internal successors, (4289), 2326 states have internal predecessors, (4289), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:01,050 INFO L93 Difference]: Finished difference Result 4718 states and 8695 transitions. [2024-11-16 09:06:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:06:01,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-16 09:06:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:01,084 INFO L225 Difference]: With dead ends: 4718 [2024-11-16 09:06:01,086 INFO L226 Difference]: Without dead ends: 2313 [2024-11-16 09:06:01,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:06:01,101 INFO L432 NwaCegarLoop]: 4156 mSDtfsCounter, 4367 mSDsluCounter, 16510 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 20666 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:01,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4377 Valid, 20666 Invalid, 564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 09:06:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2024-11-16 09:06:01,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2275. [2024-11-16 09:06:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 2249 states have (on average 1.8408181413961762) internal successors, (4140), 2252 states have internal predecessors, (4140), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 09:06:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 4174 transitions. [2024-11-16 09:06:01,354 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 4174 transitions. Word has length 74 [2024-11-16 09:06:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:01,354 INFO L471 AbstractCegarLoop]: Abstraction has 2275 states and 4174 transitions. [2024-11-16 09:06:01,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 4174 transitions. [2024-11-16 09:06:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 09:06:01,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:01,359 INFO L215 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] [2024-11-16 09:06:01,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:06:01,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:01,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1452654126, now seen corresponding path program 1 times [2024-11-16 09:06:01,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:01,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136162944] [2024-11-16 09:06:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:01,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:01,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:01,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:01,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:01,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:01,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:06:01,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:01,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136162944] [2024-11-16 09:06:01,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136162944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:01,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:06:01,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:06:01,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746555100] [2024-11-16 09:06:01,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:01,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:06:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:06:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:06:01,594 INFO L87 Difference]: Start difference. First operand 2275 states and 4174 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:02,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:02,649 INFO L93 Difference]: Finished difference Result 2624 states and 4687 transitions. [2024-11-16 09:06:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:06:02,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-16 09:06:02,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:02,661 INFO L225 Difference]: With dead ends: 2624 [2024-11-16 09:06:02,662 INFO L226 Difference]: Without dead ends: 2482 [2024-11-16 09:06:02,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:06:02,664 INFO L432 NwaCegarLoop]: 4209 mSDtfsCounter, 4376 mSDsluCounter, 16673 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 20882 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:02,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4385 Valid, 20882 Invalid, 1057 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:06:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2024-11-16 09:06:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2416. [2024-11-16 09:06:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2369 states have (on average 1.8201772899957789) internal successors, (4312), 2374 states have internal predecessors, (4312), 31 states have call successors, (31), 13 states have call predecessors, (31), 14 states have return successors, (36), 30 states have call predecessors, (36), 29 states have call successors, (36) [2024-11-16 09:06:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 4379 transitions. [2024-11-16 09:06:02,724 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 4379 transitions. Word has length 74 [2024-11-16 09:06:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:02,724 INFO L471 AbstractCegarLoop]: Abstraction has 2416 states and 4379 transitions. [2024-11-16 09:06:02,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 4379 transitions. [2024-11-16 09:06:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 09:06:02,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:02,727 INFO L215 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] [2024-11-16 09:06:02,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:06:02,728 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:02,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1733004015, now seen corresponding path program 1 times [2024-11-16 09:06:02,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:02,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727624651] [2024-11-16 09:06:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:02,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:02,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:02,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:02,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:02,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:06:02,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727624651] [2024-11-16 09:06:02,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727624651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:02,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:06:02,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:06:02,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135419812] [2024-11-16 09:06:02,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:02,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:06:02,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:06:02,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:06:02,911 INFO L87 Difference]: Start difference. First operand 2416 states and 4379 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:03,891 INFO L93 Difference]: Finished difference Result 3146 states and 5440 transitions. [2024-11-16 09:06:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:06:03,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-16 09:06:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:03,906 INFO L225 Difference]: With dead ends: 3146 [2024-11-16 09:06:03,906 INFO L226 Difference]: Without dead ends: 2865 [2024-11-16 09:06:03,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:06:03,909 INFO L432 NwaCegarLoop]: 4181 mSDtfsCounter, 4478 mSDsluCounter, 16613 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4490 SdHoareTripleChecker+Valid, 20794 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:03,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4490 Valid, 20794 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:06:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2024-11-16 09:06:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2673. [2024-11-16 09:06:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2592 states have (on average 1.7858796296296295) internal successors, (4629), 2599 states have internal predecessors, (4629), 51 states have call successors, (51), 25 states have call predecessors, (51), 28 states have return successors, (66), 52 states have call predecessors, (66), 49 states have call successors, (66) [2024-11-16 09:06:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 4746 transitions. [2024-11-16 09:06:03,994 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 4746 transitions. Word has length 74 [2024-11-16 09:06:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:03,995 INFO L471 AbstractCegarLoop]: Abstraction has 2673 states and 4746 transitions. [2024-11-16 09:06:03,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 4746 transitions. [2024-11-16 09:06:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 09:06:03,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:03,999 INFO L215 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] [2024-11-16 09:06:03,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:06:03,999 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:04,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash -197615090, now seen corresponding path program 1 times [2024-11-16 09:06:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:04,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370984216] [2024-11-16 09:06:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:06:04,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370984216] [2024-11-16 09:06:04,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370984216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:04,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:06:04,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:06:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893467155] [2024-11-16 09:06:04,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:04,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:06:04,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:04,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:06:04,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:06:04,152 INFO L87 Difference]: Start difference. First operand 2673 states and 4746 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:04,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:04,742 INFO L93 Difference]: Finished difference Result 3318 states and 5695 transitions. [2024-11-16 09:06:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:06:04,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-16 09:06:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:04,757 INFO L225 Difference]: With dead ends: 3318 [2024-11-16 09:06:04,757 INFO L226 Difference]: Without dead ends: 2778 [2024-11-16 09:06:04,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:06:04,761 INFO L432 NwaCegarLoop]: 4087 mSDtfsCounter, 4344 mSDsluCounter, 12185 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4354 SdHoareTripleChecker+Valid, 16272 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:04,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4354 Valid, 16272 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 09:06:04,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2024-11-16 09:06:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2673. [2024-11-16 09:06:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2592 states have (on average 1.7839506172839505) internal successors, (4624), 2599 states have internal predecessors, (4624), 51 states have call successors, (51), 25 states have call predecessors, (51), 28 states have return successors, (66), 52 states have call predecessors, (66), 49 states have call successors, (66) [2024-11-16 09:06:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 4741 transitions. [2024-11-16 09:06:04,869 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 4741 transitions. Word has length 74 [2024-11-16 09:06:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:04,870 INFO L471 AbstractCegarLoop]: Abstraction has 2673 states and 4741 transitions. [2024-11-16 09:06:04,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:04,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 4741 transitions. [2024-11-16 09:06:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 09:06:04,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:04,872 INFO L215 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] [2024-11-16 09:06:04,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:06:04,873 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:04,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash 432843535, now seen corresponding path program 1 times [2024-11-16 09:06:04,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:04,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334293934] [2024-11-16 09:06:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:04,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:04,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:05,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:05,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:06:05,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:05,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334293934] [2024-11-16 09:06:05,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334293934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:05,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:06:05,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:06:05,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444714804] [2024-11-16 09:06:05,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:05,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:06:05,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:05,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:06:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:06:05,017 INFO L87 Difference]: Start difference. First operand 2673 states and 4741 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:05,994 INFO L93 Difference]: Finished difference Result 3973 states and 6606 transitions. [2024-11-16 09:06:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:06:05,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-16 09:06:05,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:06,011 INFO L225 Difference]: With dead ends: 3973 [2024-11-16 09:06:06,012 INFO L226 Difference]: Without dead ends: 3435 [2024-11-16 09:06:06,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:06:06,017 INFO L432 NwaCegarLoop]: 4190 mSDtfsCounter, 4392 mSDsluCounter, 16626 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 20816 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:06,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4404 Valid, 20816 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:06:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2024-11-16 09:06:06,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3187. [2024-11-16 09:06:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 3040 states have (on average 1.7292763157894737) internal successors, (5257), 3051 states have internal predecessors, (5257), 89 states have call successors, (89), 49 states have call predecessors, (89), 56 states have return successors, (130), 94 states have call predecessors, (130), 87 states have call successors, (130) [2024-11-16 09:06:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 5476 transitions. [2024-11-16 09:06:06,182 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 5476 transitions. Word has length 74 [2024-11-16 09:06:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:06,182 INFO L471 AbstractCegarLoop]: Abstraction has 3187 states and 5476 transitions. [2024-11-16 09:06:06,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 5476 transitions. [2024-11-16 09:06:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 09:06:06,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:06,186 INFO L215 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] [2024-11-16 09:06:06,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:06:06,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:06,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash 453180910, now seen corresponding path program 1 times [2024-11-16 09:06:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:06,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612977618] [2024-11-16 09:06:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:06,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:06,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:06,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:06,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:06,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:06:06,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:06,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612977618] [2024-11-16 09:06:06,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612977618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:06,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:06:06,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:06:06,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784516973] [2024-11-16 09:06:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:06,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:06:06,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:06,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:06:06,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:06:06,309 INFO L87 Difference]: Start difference. First operand 3187 states and 5476 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:07,203 INFO L93 Difference]: Finished difference Result 5538 states and 8826 transitions. [2024-11-16 09:06:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:06:07,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-16 09:06:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:07,229 INFO L225 Difference]: With dead ends: 5538 [2024-11-16 09:06:07,229 INFO L226 Difference]: Without dead ends: 4486 [2024-11-16 09:06:07,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-16 09:06:07,239 INFO L432 NwaCegarLoop]: 4217 mSDtfsCounter, 4536 mSDsluCounter, 12371 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 16588 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:07,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 16588 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:06:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2024-11-16 09:06:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4136. [2024-11-16 09:06:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 3852 states have (on average 1.6503115264797508) internal successors, (6357), 3879 states have internal predecessors, (6357), 170 states have call successors, (170), 97 states have call predecessors, (170), 112 states have return successors, (245), 167 states have call predecessors, (245), 168 states have call successors, (245) [2024-11-16 09:06:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 6772 transitions. [2024-11-16 09:06:07,471 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 6772 transitions. Word has length 74 [2024-11-16 09:06:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:07,471 INFO L471 AbstractCegarLoop]: Abstraction has 4136 states and 6772 transitions. [2024-11-16 09:06:07,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:06:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 6772 transitions. [2024-11-16 09:06:07,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-16 09:06:07,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:07,478 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:07,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:06:07,478 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:07,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:07,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1922802632, now seen corresponding path program 1 times [2024-11-16 09:06:07,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:07,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437000925] [2024-11-16 09:06:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:07,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:06:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:06:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:06:07,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:07,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437000925] [2024-11-16 09:06:07,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437000925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:07,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093878085] [2024-11-16 09:06:07,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:07,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:07,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:07,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:07,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:06:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:07,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:06:07,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:06:07,823 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093878085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:07,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:07,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 09:06:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678417687] [2024-11-16 09:06:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:07,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:07,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:07,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:07,825 INFO L87 Difference]: Start difference. First operand 4136 states and 6772 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:06:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:08,045 INFO L93 Difference]: Finished difference Result 8064 states and 12308 transitions. [2024-11-16 09:06:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:08,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 122 [2024-11-16 09:06:08,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:08,074 INFO L225 Difference]: With dead ends: 8064 [2024-11-16 09:06:08,075 INFO L226 Difference]: Without dead ends: 6063 [2024-11-16 09:06:08,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:08,084 INFO L432 NwaCegarLoop]: 4169 mSDtfsCounter, 4127 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4127 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:08,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4127 Valid, 4356 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:08,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2024-11-16 09:06:08,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 5994. [2024-11-16 09:06:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5994 states, 5444 states have (on average 1.5732916972814108) internal successors, (8565), 5495 states have internal predecessors, (8565), 324 states have call successors, (324), 193 states have call predecessors, (324), 224 states have return successors, (467), 313 states have call predecessors, (467), 322 states have call successors, (467) [2024-11-16 09:06:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 9356 transitions. [2024-11-16 09:06:08,491 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 9356 transitions. Word has length 122 [2024-11-16 09:06:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:08,492 INFO L471 AbstractCegarLoop]: Abstraction has 5994 states and 9356 transitions. [2024-11-16 09:06:08,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:06:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 9356 transitions. [2024-11-16 09:06:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-16 09:06:08,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:08,502 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:08,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:06:08,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:08,707 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:08,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:08,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1115252558, now seen corresponding path program 1 times [2024-11-16 09:06:08,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:08,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71534489] [2024-11-16 09:06:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:06:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:06:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:06:08,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:08,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71534489] [2024-11-16 09:06:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71534489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:08,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413594421] [2024-11-16 09:06:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:08,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:08,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:08,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:08,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:06:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:08,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:06:08,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 09:06:08,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:08,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413594421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:08,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 09:06:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442994531] [2024-11-16 09:06:08,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:08,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:08,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:08,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:08,998 INFO L87 Difference]: Start difference. First operand 5994 states and 9356 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:06:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:09,346 INFO L93 Difference]: Finished difference Result 13566 states and 20014 transitions. [2024-11-16 09:06:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:09,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 122 [2024-11-16 09:06:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:09,397 INFO L225 Difference]: With dead ends: 13566 [2024-11-16 09:06:09,397 INFO L226 Difference]: Without dead ends: 9707 [2024-11-16 09:06:09,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:09,414 INFO L432 NwaCegarLoop]: 4169 mSDtfsCounter, 4133 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:09,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4356 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2024-11-16 09:06:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 9574. [2024-11-16 09:06:09,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9574 states, 8500 states have (on average 1.5064705882352942) internal successors, (12805), 8599 states have internal predecessors, (12805), 624 states have call successors, (624), 385 states have call predecessors, (624), 448 states have return successors, (903), 597 states have call predecessors, (903), 622 states have call successors, (903) [2024-11-16 09:06:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9574 states to 9574 states and 14332 transitions. [2024-11-16 09:06:09,877 INFO L78 Accepts]: Start accepts. Automaton has 9574 states and 14332 transitions. Word has length 122 [2024-11-16 09:06:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:09,878 INFO L471 AbstractCegarLoop]: Abstraction has 9574 states and 14332 transitions. [2024-11-16 09:06:09,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:06:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9574 states and 14332 transitions. [2024-11-16 09:06:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-16 09:06:09,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:09,891 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:09,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 09:06:10,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 09:06:10,095 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:10,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:10,096 INFO L85 PathProgramCache]: Analyzing trace with hash 138145364, now seen corresponding path program 1 times [2024-11-16 09:06:10,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:10,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181516601] [2024-11-16 09:06:10,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:10,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:06:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:06:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:06:10,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:10,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181516601] [2024-11-16 09:06:10,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181516601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:10,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323873621] [2024-11-16 09:06:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:10,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:10,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:10,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:10,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:06:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:10,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:06:10,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:06:10,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:10,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323873621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:10,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:10,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:10,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044844422] [2024-11-16 09:06:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:10,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:10,344 INFO L87 Difference]: Start difference. First operand 9574 states and 14332 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-16 09:06:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:10,964 INFO L93 Difference]: Finished difference Result 23511 states and 34066 transitions. [2024-11-16 09:06:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:10,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 122 [2024-11-16 09:06:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:11,031 INFO L225 Difference]: With dead ends: 23511 [2024-11-16 09:06:11,032 INFO L226 Difference]: Without dead ends: 16074 [2024-11-16 09:06:11,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:11,062 INFO L432 NwaCegarLoop]: 4337 mSDtfsCounter, 162 mSDsluCounter, 4166 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 8503 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:11,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 8503 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16074 states. [2024-11-16 09:06:11,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16074 to 16074. [2024-11-16 09:06:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16074 states, 14067 states have (on average 1.45176654581645) internal successors, (20422), 14231 states have internal predecessors, (20422), 1145 states have call successors, (1145), 733 states have call predecessors, (1145), 860 states have return successors, (1839), 1125 states have call predecessors, (1839), 1143 states have call successors, (1839) [2024-11-16 09:06:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16074 states to 16074 states and 23406 transitions. [2024-11-16 09:06:11,863 INFO L78 Accepts]: Start accepts. Automaton has 16074 states and 23406 transitions. Word has length 122 [2024-11-16 09:06:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:11,864 INFO L471 AbstractCegarLoop]: Abstraction has 16074 states and 23406 transitions. [2024-11-16 09:06:11,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-16 09:06:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 16074 states and 23406 transitions. [2024-11-16 09:06:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:06:11,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:11,902 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:11,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 09:06:12,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:12,103 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:12,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1250452814, now seen corresponding path program 1 times [2024-11-16 09:06:12,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:12,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059825582] [2024-11-16 09:06:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:12,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:06:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:06:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:06:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:06:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 09:06:12,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059825582] [2024-11-16 09:06:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059825582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925882705] [2024-11-16 09:06:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:12,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:12,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:12,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:12,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:06:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:12,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:06:12,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 09:06:12,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925882705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:12,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:12,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493871849] [2024-11-16 09:06:12,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:12,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:12,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:12,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:12,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:12,498 INFO L87 Difference]: Start difference. First operand 16074 states and 23406 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:06:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:13,278 INFO L93 Difference]: Finished difference Result 25049 states and 36336 transitions. [2024-11-16 09:06:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:13,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 180 [2024-11-16 09:06:13,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:13,336 INFO L225 Difference]: With dead ends: 25049 [2024-11-16 09:06:13,337 INFO L226 Difference]: Without dead ends: 14352 [2024-11-16 09:06:13,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:13,370 INFO L432 NwaCegarLoop]: 4166 mSDtfsCounter, 4094 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:13,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 4200 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:13,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14352 states. [2024-11-16 09:06:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14352 to 14288. [2024-11-16 09:06:14,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14288 states, 12573 states have (on average 1.428616877435775) internal successors, (17962), 12699 states have internal predecessors, (17962), 967 states have call successors, (967), 651 states have call predecessors, (967), 746 states have return successors, (1467), 947 states have call predecessors, (1467), 965 states have call successors, (1467) [2024-11-16 09:06:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14288 states to 14288 states and 20396 transitions. [2024-11-16 09:06:14,293 INFO L78 Accepts]: Start accepts. Automaton has 14288 states and 20396 transitions. Word has length 180 [2024-11-16 09:06:14,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:14,294 INFO L471 AbstractCegarLoop]: Abstraction has 14288 states and 20396 transitions. [2024-11-16 09:06:14,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:06:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand 14288 states and 20396 transitions. [2024-11-16 09:06:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:06:14,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:14,326 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:14,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 09:06:14,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:14,528 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:14,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash 642294832, now seen corresponding path program 1 times [2024-11-16 09:06:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969457251] [2024-11-16 09:06:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:14,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:06:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:06:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:06:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:06:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-16 09:06:14,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:14,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969457251] [2024-11-16 09:06:14,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969457251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:14,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095283263] [2024-11-16 09:06:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:14,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:14,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:14,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 09:06:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:14,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:06:14,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-16 09:06:14,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:14,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095283263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:14,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:14,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133358031] [2024-11-16 09:06:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:14,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:14,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:14,874 INFO L87 Difference]: Start difference. First operand 14288 states and 20396 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:06:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:15,633 INFO L93 Difference]: Finished difference Result 27597 states and 38714 transitions. [2024-11-16 09:06:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 180 [2024-11-16 09:06:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:15,689 INFO L225 Difference]: With dead ends: 27597 [2024-11-16 09:06:15,689 INFO L226 Difference]: Without dead ends: 15454 [2024-11-16 09:06:15,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:15,722 INFO L432 NwaCegarLoop]: 4170 mSDtfsCounter, 4144 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4144 SdHoareTripleChecker+Valid, 4203 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:15,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4144 Valid, 4203 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15454 states. [2024-11-16 09:06:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15454 to 15454. [2024-11-16 09:06:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15454 states, 13659 states have (on average 1.3967347536422872) internal successors, (19078), 13785 states have internal predecessors, (19078), 981 states have call successors, (981), 717 states have call predecessors, (981), 812 states have return successors, (1481), 961 states have call predecessors, (1481), 979 states have call successors, (1481) [2024-11-16 09:06:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15454 states to 15454 states and 21540 transitions. [2024-11-16 09:06:16,334 INFO L78 Accepts]: Start accepts. Automaton has 15454 states and 21540 transitions. Word has length 180 [2024-11-16 09:06:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:16,334 INFO L471 AbstractCegarLoop]: Abstraction has 15454 states and 21540 transitions. [2024-11-16 09:06:16,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:06:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15454 states and 21540 transitions. [2024-11-16 09:06:16,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:06:16,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:16,361 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:16,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 09:06:16,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 09:06:16,562 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:16,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 127184948, now seen corresponding path program 1 times [2024-11-16 09:06:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:16,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203257586] [2024-11-16 09:06:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:16,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:06:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:06:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:06:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:06:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 09:06:16,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203257586] [2024-11-16 09:06:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203257586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786816539] [2024-11-16 09:06:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:16,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:16,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:16,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:16,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 09:06:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:16,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:06:16,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 09:06:16,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:16,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786816539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:16,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:16,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:16,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065223765] [2024-11-16 09:06:16,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:16,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:16,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:16,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:16,893 INFO L87 Difference]: Start difference. First operand 15454 states and 21540 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:06:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:17,573 INFO L93 Difference]: Finished difference Result 26768 states and 36440 transitions. [2024-11-16 09:06:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:17,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 180 [2024-11-16 09:06:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:17,636 INFO L225 Difference]: With dead ends: 26768 [2024-11-16 09:06:17,636 INFO L226 Difference]: Without dead ends: 16266 [2024-11-16 09:06:17,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:17,663 INFO L432 NwaCegarLoop]: 4207 mSDtfsCounter, 4093 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4093 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:17,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4093 Valid, 4399 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16266 states. [2024-11-16 09:06:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16266 to 15350. [2024-11-16 09:06:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15350 states, 13555 states have (on average 1.384433788270011) internal successors, (18766), 13681 states have internal predecessors, (18766), 981 states have call successors, (981), 717 states have call predecessors, (981), 812 states have return successors, (1481), 961 states have call predecessors, (1481), 979 states have call successors, (1481) [2024-11-16 09:06:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15350 states to 15350 states and 21228 transitions. [2024-11-16 09:06:18,331 INFO L78 Accepts]: Start accepts. Automaton has 15350 states and 21228 transitions. Word has length 180 [2024-11-16 09:06:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:18,332 INFO L471 AbstractCegarLoop]: Abstraction has 15350 states and 21228 transitions. [2024-11-16 09:06:18,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:06:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 15350 states and 21228 transitions. [2024-11-16 09:06:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:06:18,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:18,363 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:18,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 09:06:18,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:18,565 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:18,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1428726534, now seen corresponding path program 1 times [2024-11-16 09:06:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:18,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645255324] [2024-11-16 09:06:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:06:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:06:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 09:06:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:06:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-16 09:06:18,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:18,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645255324] [2024-11-16 09:06:18,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645255324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:18,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338242604] [2024-11-16 09:06:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:18,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:18,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:18,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:18,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 09:06:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:18,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:06:18,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 09:06:18,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:18,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338242604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:18,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:18,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:18,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631125187] [2024-11-16 09:06:18,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:18,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:18,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:18,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:18,852 INFO L87 Difference]: Start difference. First operand 15350 states and 21228 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:06:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:19,682 INFO L93 Difference]: Finished difference Result 40930 states and 55082 transitions. [2024-11-16 09:06:19,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:19,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 181 [2024-11-16 09:06:19,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:19,786 INFO L225 Difference]: With dead ends: 40930 [2024-11-16 09:06:19,786 INFO L226 Difference]: Without dead ends: 27725 [2024-11-16 09:06:19,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:19,824 INFO L432 NwaCegarLoop]: 4346 mSDtfsCounter, 171 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 8506 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:19,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 8506 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:19,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27725 states. [2024-11-16 09:06:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27725 to 27720. [2024-11-16 09:06:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27720 states, 24219 states have (on average 1.3371320037986705) internal successors, (32384), 24469 states have internal predecessors, (32384), 1903 states have call successors, (1903), 1405 states have call predecessors, (1903), 1596 states have return successors, (3263), 1865 states have call predecessors, (3263), 1901 states have call successors, (3263) [2024-11-16 09:06:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27720 states to 27720 states and 37550 transitions. [2024-11-16 09:06:21,418 INFO L78 Accepts]: Start accepts. Automaton has 27720 states and 37550 transitions. Word has length 181 [2024-11-16 09:06:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:21,419 INFO L471 AbstractCegarLoop]: Abstraction has 27720 states and 37550 transitions. [2024-11-16 09:06:21,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:06:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 27720 states and 37550 transitions. [2024-11-16 09:06:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:06:21,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:21,462 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:21,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 09:06:21,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:21,662 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:21,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:21,663 INFO L85 PathProgramCache]: Analyzing trace with hash 858494322, now seen corresponding path program 1 times [2024-11-16 09:06:21,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:21,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159622241] [2024-11-16 09:06:21,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:21,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:06:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:06:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:06:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:06:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 09:06:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159622241] [2024-11-16 09:06:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159622241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497526525] [2024-11-16 09:06:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:21,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:21,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:21,810 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:21,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 09:06:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:21,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:06:21,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 09:06:22,047 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:22,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497526525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:22,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:22,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99038862] [2024-11-16 09:06:22,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:22,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:22,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:22,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:22,049 INFO L87 Difference]: Start difference. First operand 27720 states and 37550 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:06:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:23,086 INFO L93 Difference]: Finished difference Result 45969 states and 62639 transitions. [2024-11-16 09:06:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:23,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 181 [2024-11-16 09:06:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:23,176 INFO L225 Difference]: With dead ends: 45969 [2024-11-16 09:06:23,176 INFO L226 Difference]: Without dead ends: 23768 [2024-11-16 09:06:23,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:23,223 INFO L432 NwaCegarLoop]: 4161 mSDtfsCounter, 4087 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:23,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 4193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23768 states. [2024-11-16 09:06:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23768 to 23480. [2024-11-16 09:06:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23480 states, 20607 states have (on average 1.315669432717038) internal successors, (27112), 20783 states have internal predecessors, (27112), 1567 states have call successors, (1567), 1177 states have call predecessors, (1567), 1304 states have return successors, (2557), 1531 states have call predecessors, (2557), 1565 states have call successors, (2557) [2024-11-16 09:06:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23480 states to 23480 states and 31236 transitions. [2024-11-16 09:06:24,196 INFO L78 Accepts]: Start accepts. Automaton has 23480 states and 31236 transitions. Word has length 181 [2024-11-16 09:06:24,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:24,196 INFO L471 AbstractCegarLoop]: Abstraction has 23480 states and 31236 transitions. [2024-11-16 09:06:24,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:06:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 23480 states and 31236 transitions. [2024-11-16 09:06:24,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:06:24,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:24,221 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:24,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 09:06:24,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 09:06:24,422 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:24,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash -460433968, now seen corresponding path program 1 times [2024-11-16 09:06:24,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:24,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600352643] [2024-11-16 09:06:24,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:24,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:06:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:06:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:06:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:06:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 09:06:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600352643] [2024-11-16 09:06:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600352643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092213197] [2024-11-16 09:06:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:24,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:24,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:24,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:24,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 09:06:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:24,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:06:24,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:06:24,714 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:24,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092213197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:24,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:24,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:24,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731198963] [2024-11-16 09:06:24,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:24,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:24,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:24,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:24,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:24,717 INFO L87 Difference]: Start difference. First operand 23480 states and 31236 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:06:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:26,316 INFO L93 Difference]: Finished difference Result 63382 states and 83078 transitions. [2024-11-16 09:06:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:26,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 181 [2024-11-16 09:06:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:26,456 INFO L225 Difference]: With dead ends: 63382 [2024-11-16 09:06:26,456 INFO L226 Difference]: Without dead ends: 42061 [2024-11-16 09:06:26,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:26,503 INFO L432 NwaCegarLoop]: 4337 mSDtfsCounter, 158 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 8492 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:26,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 8492 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:06:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42061 states. [2024-11-16 09:06:29,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42061 to 42056. [2024-11-16 09:06:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42056 states, 36539 states have (on average 1.2780864282000055) internal successors, (46700), 36889 states have internal predecessors, (46700), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:06:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42056 states to 42056 states and 55384 transitions. [2024-11-16 09:06:29,298 INFO L78 Accepts]: Start accepts. Automaton has 42056 states and 55384 transitions. Word has length 181 [2024-11-16 09:06:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:29,299 INFO L471 AbstractCegarLoop]: Abstraction has 42056 states and 55384 transitions. [2024-11-16 09:06:29,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:06:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 42056 states and 55384 transitions. [2024-11-16 09:06:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-16 09:06:29,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:29,334 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:29,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 09:06:29,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 09:06:29,535 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:29,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:29,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1386502158, now seen corresponding path program 1 times [2024-11-16 09:06:29,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:29,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058897962] [2024-11-16 09:06:29,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:29,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:06:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:06:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:06:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:06:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 09:06:29,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:29,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058897962] [2024-11-16 09:06:29,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058897962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:29,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948648850] [2024-11-16 09:06:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:29,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:29,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:29,665 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:29,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 09:06:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:29,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:06:29,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 09:06:29,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948648850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:29,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:29,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:29,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455768064] [2024-11-16 09:06:29,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:29,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:29,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:29,850 INFO L87 Difference]: Start difference. First operand 42056 states and 55384 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:06:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:32,075 INFO L93 Difference]: Finished difference Result 75292 states and 98310 transitions. [2024-11-16 09:06:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 182 [2024-11-16 09:06:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:32,226 INFO L225 Difference]: With dead ends: 75292 [2024-11-16 09:06:32,227 INFO L226 Difference]: Without dead ends: 42509 [2024-11-16 09:06:32,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:32,282 INFO L432 NwaCegarLoop]: 4193 mSDtfsCounter, 4114 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4114 SdHoareTripleChecker+Valid, 4378 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:32,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4114 Valid, 4378 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:32,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42509 states. [2024-11-16 09:06:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42509 to 42056. [2024-11-16 09:06:34,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42056 states, 36539 states have (on average 1.2711896877309177) internal successors, (46448), 36889 states have internal predecessors, (46448), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:06:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42056 states to 42056 states and 55132 transitions. [2024-11-16 09:06:34,829 INFO L78 Accepts]: Start accepts. Automaton has 42056 states and 55132 transitions. Word has length 182 [2024-11-16 09:06:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:34,829 INFO L471 AbstractCegarLoop]: Abstraction has 42056 states and 55132 transitions. [2024-11-16 09:06:34,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:06:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 42056 states and 55132 transitions. [2024-11-16 09:06:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-16 09:06:34,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:34,865 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:34,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 09:06:35,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 09:06:35,066 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:35,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash 249738666, now seen corresponding path program 1 times [2024-11-16 09:06:35,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:35,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107999391] [2024-11-16 09:06:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:35,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:06:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:06:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-16 09:06:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:06:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-16 09:06:35,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107999391] [2024-11-16 09:06:35,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107999391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:06:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164973650] [2024-11-16 09:06:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:35,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:06:35,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:06:35,188 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:06:35,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 09:06:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:35,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:06:35,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:06:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 09:06:35,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:06:35,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164973650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:35,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:06:35,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:06:35,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136037076] [2024-11-16 09:06:35,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:35,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:06:35,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:35,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:06:35,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:35,360 INFO L87 Difference]: Start difference. First operand 42056 states and 55132 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:06:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:37,691 INFO L93 Difference]: Finished difference Result 75576 states and 98272 transitions. [2024-11-16 09:06:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:06:37,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 182 [2024-11-16 09:06:37,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:37,839 INFO L225 Difference]: With dead ends: 75576 [2024-11-16 09:06:37,839 INFO L226 Difference]: Without dead ends: 42793 [2024-11-16 09:06:37,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:37,905 INFO L432 NwaCegarLoop]: 4213 mSDtfsCounter, 4114 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4114 SdHoareTripleChecker+Valid, 4400 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:37,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4114 Valid, 4400 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:06:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42793 states. [2024-11-16 09:06:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42793 to 41972. [2024-11-16 09:06:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41972 states, 36455 states have (on average 1.2649019338910985) internal successors, (46112), 36805 states have internal predecessors, (46112), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:06:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41972 states to 41972 states and 54796 transitions. [2024-11-16 09:06:40,316 INFO L78 Accepts]: Start accepts. Automaton has 41972 states and 54796 transitions. Word has length 182 [2024-11-16 09:06:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:06:40,317 INFO L471 AbstractCegarLoop]: Abstraction has 41972 states and 54796 transitions. [2024-11-16 09:06:40,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:06:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 41972 states and 54796 transitions. [2024-11-16 09:06:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-16 09:06:40,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:06:40,351 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:06:40,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 09:06:40,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 09:06:40,552 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:06:40,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:06:40,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1634111538, now seen corresponding path program 1 times [2024-11-16 09:06:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:06:40,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347043288] [2024-11-16 09:06:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:06:40,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:06:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:06:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:06:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:06:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:06:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:06:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:06:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:06:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:06:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:06:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:06:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:06:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-16 09:06:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:06:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347043288] [2024-11-16 09:06:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347043288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:06:40,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:06:40,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:06:40,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241515271] [2024-11-16 09:06:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:06:40,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:06:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:06:40,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:06:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:06:40,653 INFO L87 Difference]: Start difference. First operand 41972 states and 54796 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 09:06:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:06:43,048 INFO L93 Difference]: Finished difference Result 82639 states and 105906 transitions. [2024-11-16 09:06:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:06:43,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 182 [2024-11-16 09:06:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:06:43,168 INFO L225 Difference]: With dead ends: 82639 [2024-11-16 09:06:43,168 INFO L226 Difference]: Without dead ends: 42818 [2024-11-16 09:06:43,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:06:43,227 INFO L432 NwaCegarLoop]: 4105 mSDtfsCounter, 311 mSDsluCounter, 12058 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 16163 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:06:43,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 16163 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:06:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42818 states.