./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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_label43+token_ring.09.cil-1.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 fd6b20844e2c749d2220243ee5decb4640d1db1a76545071f1578ab9a21c944c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:59:33,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:59:33,776 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:59:33,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:59:33,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:59:33,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:59:33,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:59:33,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:59:33,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:59:33,802 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:59:33,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:59:33,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:59:33,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:59:33,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:59:33,803 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:59:33,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:59:33,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:59:33,805 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:59:33,805 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:59:33,805 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:59:33,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:59:33,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:59:33,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:59:33,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:59:33,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:59:33,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:59:33,806 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> fd6b20844e2c749d2220243ee5decb4640d1db1a76545071f1578ab9a21c944c [2025-03-16 19:59:34,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:59:34,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:59:34,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:59:34,037 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:59:34,037 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:59:34,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c [2025-03-16 19:59:35,164 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a436aabf/1bf0f4a94b8149eeb71f9661b4190d1d/FLAGdd132a493 [2025-03-16 19:59:35,770 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:59:35,771 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c [2025-03-16 19:59:35,820 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a436aabf/1bf0f4a94b8149eeb71f9661b4190d1d/FLAGdd132a493 [2025-03-16 19:59:35,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a436aabf/1bf0f4a94b8149eeb71f9661b4190d1d [2025-03-16 19:59:35,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:59:35,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:59:35,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:59:35,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:59:35,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:59:35,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:59:35" (1/1) ... [2025-03-16 19:59:35,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5989a0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:35, skipping insertion in model container [2025-03-16 19:59:35,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:59:35" (1/1) ... [2025-03-16 19:59:35,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:59:37,049 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_label43+token_ring.09.cil-1.c[381679,381692] [2025-03-16 19:59:37,073 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_label43+token_ring.09.cil-1.c[383339,383352] [2025-03-16 19:59:37,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:59:37,279 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:59:37,753 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_label43+token_ring.09.cil-1.c[381679,381692] [2025-03-16 19:59:37,757 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_label43+token_ring.09.cil-1.c[383339,383352] [2025-03-16 19:59:37,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:59:37,818 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:59:37,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37 WrapperNode [2025-03-16 19:59:37,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:59:37,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:59:37,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:59:37,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:59:37,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:37,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,200 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13014 [2025-03-16 19:59:38,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:59:38,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:59:38,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:59:38,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:59:38,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,305 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]. [2025-03-16 19:59:38,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,464 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:59:38,550 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:59:38,550 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:59:38,550 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:59:38,551 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (1/1) ... [2025-03-16 19:59:38,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:59:38,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:59:38,575 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) [2025-03-16 19:59:38,581 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 [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:59:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:59:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:59:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:59:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:59:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:59:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:59:38,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:59:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:59:38,684 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:59:38,685 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:59:44,324 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:59:44,324 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:59:44,325 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:59:44,325 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:59:44,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:59:44,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:59:44,326 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:59:44,514 INFO L? ?]: Removed 1725 outVars from TransFormulas that were not future-live. [2025-03-16 19:59:44,514 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:59:44,551 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:59:44,551 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:59:44,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:59:44 BoogieIcfgContainer [2025-03-16 19:59:44,551 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:59:44,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:59:44,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:59:44,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:59:44,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:59:35" (1/3) ... [2025-03-16 19:59:44,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fc8e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:59:44, skipping insertion in model container [2025-03-16 19:59:44,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:37" (2/3) ... [2025-03-16 19:59:44,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fc8e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:59:44, skipping insertion in model container [2025-03-16 19:59:44,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:59:44" (3/3) ... [2025-03-16 19:59:44,561 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-1.c [2025-03-16 19:59:44,572 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:59:44,574 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.09.cil-1.c that has 7 procedures, 2412 locations, 1 initial locations, 13 loop locations, and 2 error locations. [2025-03-16 19:59:44,669 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:59:44,678 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;@15840832, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:59:44,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:59:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 2412 states, 2381 states have (on average 1.868542629147417) internal successors, (4449), 2383 states have internal predecessors, (4449), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-16 19:59:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:44,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:44,707 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:44,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:44,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash -838048785, now seen corresponding path program 1 times [2025-03-16 19:59:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:44,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078121998] [2025-03-16 19:59:44,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:44,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:44,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:44,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:44,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:44,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078121998] [2025-03-16 19:59:45,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078121998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:45,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:45,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:45,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406815537] [2025-03-16 19:59:45,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:45,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:45,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:45,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:45,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:45,195 INFO L87 Difference]: Start difference. First operand has 2412 states, 2381 states have (on average 1.868542629147417) internal successors, (4449), 2383 states have internal predecessors, (4449), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:45,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:45,765 INFO L93 Difference]: Finished difference Result 5120 states and 9482 transitions. [2025-03-16 19:59:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:59:45,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:45,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:45,790 INFO L225 Difference]: With dead ends: 5120 [2025-03-16 19:59:45,790 INFO L226 Difference]: Without dead ends: 2715 [2025-03-16 19:59:45,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:45,804 INFO L435 NwaCegarLoop]: 4325 mSDtfsCounter, 4827 mSDsluCounter, 8846 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4844 SdHoareTripleChecker+Valid, 13171 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:45,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4844 Valid, 13171 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:59:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2025-03-16 19:59:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2692. [2025-03-16 19:59:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2636 states have (on average 1.8163884673748103) internal successors, (4788), 2639 states have internal predecessors, (4788), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2025-03-16 19:59:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4871 transitions. [2025-03-16 19:59:45,988 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4871 transitions. Word has length 131 [2025-03-16 19:59:45,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:45,989 INFO L471 AbstractCegarLoop]: Abstraction has 2692 states and 4871 transitions. [2025-03-16 19:59:45,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4871 transitions. [2025-03-16 19:59:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:45,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:45,997 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:45,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:59:45,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:45,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1792194191, now seen corresponding path program 1 times [2025-03-16 19:59:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:45,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989296548] [2025-03-16 19:59:45,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:45,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:46,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:46,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:46,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:46,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:46,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:46,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989296548] [2025-03-16 19:59:46,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989296548] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:46,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:46,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:46,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265173472] [2025-03-16 19:59:46,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:46,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:46,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:46,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:46,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:46,261 INFO L87 Difference]: Start difference. First operand 2692 states and 4871 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:46,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:46,924 INFO L93 Difference]: Finished difference Result 3610 states and 6360 transitions. [2025-03-16 19:59:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:46,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:46,939 INFO L225 Difference]: With dead ends: 3610 [2025-03-16 19:59:46,939 INFO L226 Difference]: Without dead ends: 3054 [2025-03-16 19:59:46,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:46,943 INFO L435 NwaCegarLoop]: 4559 mSDtfsCounter, 4822 mSDsluCounter, 13704 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 18263 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:46,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4839 Valid, 18263 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2025-03-16 19:59:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2955. [2025-03-16 19:59:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2874 states have (on average 1.7967988865692415) internal successors, (5164), 2878 states have internal predecessors, (5164), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (63), 60 states have call predecessors, (63), 59 states have call successors, (63) [2025-03-16 19:59:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 5286 transitions. [2025-03-16 19:59:47,035 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 5286 transitions. Word has length 131 [2025-03-16 19:59:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:47,035 INFO L471 AbstractCegarLoop]: Abstraction has 2955 states and 5286 transitions. [2025-03-16 19:59:47,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 5286 transitions. [2025-03-16 19:59:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:47,037 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:47,037 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:47,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:59:47,038 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:47,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1679091634, now seen corresponding path program 1 times [2025-03-16 19:59:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874264229] [2025-03-16 19:59:47,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:47,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:47,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:47,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:47,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:47,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:47,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874264229] [2025-03-16 19:59:47,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874264229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:47,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:47,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:47,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947108987] [2025-03-16 19:59:47,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:47,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:47,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:47,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:47,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:47,217 INFO L87 Difference]: Start difference. First operand 2955 states and 5286 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:47,843 INFO L93 Difference]: Finished difference Result 4448 states and 7702 transitions. [2025-03-16 19:59:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:47,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:47,857 INFO L225 Difference]: With dead ends: 4448 [2025-03-16 19:59:47,858 INFO L226 Difference]: Without dead ends: 3629 [2025-03-16 19:59:47,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:47,861 INFO L435 NwaCegarLoop]: 4555 mSDtfsCounter, 4817 mSDsluCounter, 13692 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 18247 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:47,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4834 Valid, 18247 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2025-03-16 19:59:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3516. [2025-03-16 19:59:47,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3383 states have (on average 1.767366242979604) internal successors, (5979), 3391 states have internal predecessors, (5979), 95 states have call successors, (95), 30 states have call predecessors, (95), 36 states have return successors, (111), 98 states have call predecessors, (111), 95 states have call successors, (111) [2025-03-16 19:59:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 6185 transitions. [2025-03-16 19:59:47,972 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 6185 transitions. Word has length 131 [2025-03-16 19:59:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:47,973 INFO L471 AbstractCegarLoop]: Abstraction has 3516 states and 6185 transitions. [2025-03-16 19:59:47,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 6185 transitions. [2025-03-16 19:59:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:47,975 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:47,975 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:47,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:59:47,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:47,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1534067375, now seen corresponding path program 1 times [2025-03-16 19:59:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:47,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651798404] [2025-03-16 19:59:47,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:47,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:47,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:47,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:47,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:47,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651798404] [2025-03-16 19:59:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651798404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:48,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:48,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:48,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437383750] [2025-03-16 19:59:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:48,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:48,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:48,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:48,133 INFO L87 Difference]: Start difference. First operand 3516 states and 6185 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:48,756 INFO L93 Difference]: Finished difference Result 6259 states and 10659 transitions. [2025-03-16 19:59:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:48,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:48,778 INFO L225 Difference]: With dead ends: 6259 [2025-03-16 19:59:48,778 INFO L226 Difference]: Without dead ends: 4879 [2025-03-16 19:59:48,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:48,786 INFO L435 NwaCegarLoop]: 4552 mSDtfsCounter, 4812 mSDsluCounter, 13683 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4829 SdHoareTripleChecker+Valid, 18235 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:48,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4829 Valid, 18235 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2025-03-16 19:59:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4737. [2025-03-16 19:59:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 4494 states have (on average 1.7327547841566533) internal successors, (7787), 4516 states have internal predecessors, (7787), 167 states have call successors, (167), 54 states have call predecessors, (167), 74 states have return successors, (231), 174 states have call predecessors, (231), 167 states have call successors, (231) [2025-03-16 19:59:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 8185 transitions. [2025-03-16 19:59:48,928 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 8185 transitions. Word has length 131 [2025-03-16 19:59:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:48,929 INFO L471 AbstractCegarLoop]: Abstraction has 4737 states and 8185 transitions. [2025-03-16 19:59:48,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 8185 transitions. [2025-03-16 19:59:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:48,935 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:48,935 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:48,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:59:48,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:48,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2053359662, now seen corresponding path program 1 times [2025-03-16 19:59:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:48,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895654540] [2025-03-16 19:59:48,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:48,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:48,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:48,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:48,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895654540] [2025-03-16 19:59:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895654540] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:49,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048811171] [2025-03-16 19:59:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:49,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:49,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:49,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:49,114 INFO L87 Difference]: Start difference. First operand 4737 states and 8185 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:49,722 INFO L93 Difference]: Finished difference Result 10258 states and 17369 transitions. [2025-03-16 19:59:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:49,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:49,752 INFO L225 Difference]: With dead ends: 10258 [2025-03-16 19:59:49,753 INFO L226 Difference]: Without dead ends: 7657 [2025-03-16 19:59:49,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:49,763 INFO L435 NwaCegarLoop]: 4549 mSDtfsCounter, 4807 mSDsluCounter, 13674 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4824 SdHoareTripleChecker+Valid, 18223 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:49,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4824 Valid, 18223 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2025-03-16 19:59:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 7458. [2025-03-16 19:59:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 6977 states have (on average 1.706034112082557) internal successors, (11903), 7045 states have internal predecessors, (11903), 311 states have call successors, (311), 102 states have call predecessors, (311), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2025-03-16 19:59:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 12781 transitions. [2025-03-16 19:59:49,962 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 12781 transitions. Word has length 131 [2025-03-16 19:59:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:49,962 INFO L471 AbstractCegarLoop]: Abstraction has 7458 states and 12781 transitions. [2025-03-16 19:59:49,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 12781 transitions. [2025-03-16 19:59:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:49,966 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:49,966 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:49,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:59:49,966 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:49,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1255024945, now seen corresponding path program 1 times [2025-03-16 19:59:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891014804] [2025-03-16 19:59:49,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:49,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:49,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:49,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:49,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:49,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:50,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:50,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891014804] [2025-03-16 19:59:50,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891014804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:50,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:50,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:50,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642679346] [2025-03-16 19:59:50,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:50,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:50,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:50,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:50,086 INFO L87 Difference]: Start difference. First operand 7458 states and 12781 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:50,842 INFO L93 Difference]: Finished difference Result 19313 states and 33155 transitions. [2025-03-16 19:59:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:50,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:50,893 INFO L225 Difference]: With dead ends: 19313 [2025-03-16 19:59:50,893 INFO L226 Difference]: Without dead ends: 13991 [2025-03-16 19:59:50,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:50,906 INFO L435 NwaCegarLoop]: 4546 mSDtfsCounter, 4802 mSDsluCounter, 13665 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 18211 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:50,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 18211 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2025-03-16 19:59:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 13683. [2025-03-16 19:59:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.699100378787879) internal successors, (21531), 12886 states have internal predecessors, (21531), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:59:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23753 transitions. [2025-03-16 19:59:51,266 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23753 transitions. Word has length 131 [2025-03-16 19:59:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:51,267 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23753 transitions. [2025-03-16 19:59:51,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23753 transitions. [2025-03-16 19:59:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:51,275 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:51,275 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:51,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:59:51,275 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:51,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1963388942, now seen corresponding path program 1 times [2025-03-16 19:59:51,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:51,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450055969] [2025-03-16 19:59:51,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:51,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:51,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:51,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:51,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:51,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:51,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:51,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450055969] [2025-03-16 19:59:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450055969] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:51,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:51,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:51,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476165315] [2025-03-16 19:59:51,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:51,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:51,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:51,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:51,382 INFO L87 Difference]: Start difference. First operand 13683 states and 23753 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:51,918 INFO L93 Difference]: Finished difference Result 28660 states and 50738 transitions. [2025-03-16 19:59:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:59:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:51,964 INFO L225 Difference]: With dead ends: 28660 [2025-03-16 19:59:51,964 INFO L226 Difference]: Without dead ends: 17113 [2025-03-16 19:59:51,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:51,991 INFO L435 NwaCegarLoop]: 4295 mSDtfsCounter, 4564 mSDsluCounter, 8465 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 12760 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:51,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 12760 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:59:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17113 states. [2025-03-16 19:59:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17113 to 13683. [2025-03-16 19:59:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.6964962121212122) internal successors, (21498), 12886 states have internal predecessors, (21498), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:59:52,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23720 transitions. [2025-03-16 19:59:52,427 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23720 transitions. Word has length 131 [2025-03-16 19:59:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:52,428 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23720 transitions. [2025-03-16 19:59:52,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23720 transitions. [2025-03-16 19:59:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:52,434 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:52,434 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:52,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:59:52,434 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:52,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:52,435 INFO L85 PathProgramCache]: Analyzing trace with hash -127546095, now seen corresponding path program 1 times [2025-03-16 19:59:52,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:52,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061736528] [2025-03-16 19:59:52,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:52,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:52,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:52,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:52,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:52,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:52,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:52,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061736528] [2025-03-16 19:59:52,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061736528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:52,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:52,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:52,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134149113] [2025-03-16 19:59:52,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:52,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:52,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:52,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:52,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:52,522 INFO L87 Difference]: Start difference. First operand 13683 states and 23720 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:53,192 INFO L93 Difference]: Finished difference Result 28415 states and 50182 transitions. [2025-03-16 19:59:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:59:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:53,257 INFO L225 Difference]: With dead ends: 28415 [2025-03-16 19:59:53,257 INFO L226 Difference]: Without dead ends: 16868 [2025-03-16 19:59:53,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:53,293 INFO L435 NwaCegarLoop]: 4292 mSDtfsCounter, 4561 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 12752 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:53,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 12752 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:59:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2025-03-16 19:59:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13683. [2025-03-16 19:59:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.6938920454545454) internal successors, (21465), 12886 states have internal predecessors, (21465), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:59:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23687 transitions. [2025-03-16 19:59:53,804 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23687 transitions. Word has length 131 [2025-03-16 19:59:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:53,804 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23687 transitions. [2025-03-16 19:59:53,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23687 transitions. [2025-03-16 19:59:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:53,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:53,810 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:53,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:59:53,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:53,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash -68325358, now seen corresponding path program 1 times [2025-03-16 19:59:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:53,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993895644] [2025-03-16 19:59:53,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:53,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:53,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:53,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:53,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:53,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:53,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:53,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993895644] [2025-03-16 19:59:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993895644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:53,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500099886] [2025-03-16 19:59:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:53,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:53,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:53,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:53,919 INFO L87 Difference]: Start difference. First operand 13683 states and 23687 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:54,841 INFO L93 Difference]: Finished difference Result 41402 states and 73032 transitions. [2025-03-16 19:59:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:54,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:54,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:54,950 INFO L225 Difference]: With dead ends: 41402 [2025-03-16 19:59:54,950 INFO L226 Difference]: Without dead ends: 29855 [2025-03-16 19:59:54,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:54,987 INFO L435 NwaCegarLoop]: 4527 mSDtfsCounter, 5032 mSDsluCounter, 13607 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5059 SdHoareTripleChecker+Valid, 18134 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:54,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5059 Valid, 18134 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:59:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29855 states. [2025-03-16 19:59:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29855 to 27495. [2025-03-16 19:59:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27495 states, 25294 states have (on average 1.7002846524867556) internal successors, (43007), 25962 states have internal predecessors, (43007), 1143 states have call successors, (1143), 390 states have call predecessors, (1143), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-16 19:59:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27495 states to 27495 states and 49389 transitions. [2025-03-16 19:59:55,876 INFO L78 Accepts]: Start accepts. Automaton has 27495 states and 49389 transitions. Word has length 131 [2025-03-16 19:59:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:55,877 INFO L471 AbstractCegarLoop]: Abstraction has 27495 states and 49389 transitions. [2025-03-16 19:59:55,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 27495 states and 49389 transitions. [2025-03-16 19:59:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:55,886 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:55,886 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:55,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:59:55,887 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:55,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:55,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1062461267, now seen corresponding path program 1 times [2025-03-16 19:59:55,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:55,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799097605] [2025-03-16 19:59:55,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:55,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:55,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:55,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:55,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:55,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:55,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:55,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799097605] [2025-03-16 19:59:55,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799097605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:55,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:55,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:55,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907463650] [2025-03-16 19:59:55,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:55,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:55,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:55,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:55,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:55,974 INFO L87 Difference]: Start difference. First operand 27495 states and 49389 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:56,914 INFO L93 Difference]: Finished difference Result 60164 states and 111448 transitions. [2025-03-16 19:59:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:59:56,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:59:56,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:57,058 INFO L225 Difference]: With dead ends: 60164 [2025-03-16 19:59:57,059 INFO L226 Difference]: Without dead ends: 34805 [2025-03-16 19:59:57,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:57,119 INFO L435 NwaCegarLoop]: 4285 mSDtfsCounter, 4554 mSDsluCounter, 8445 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4571 SdHoareTripleChecker+Valid, 12730 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:57,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4571 Valid, 12730 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:59:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34805 states. [2025-03-16 19:59:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34805 to 27495. [2025-03-16 19:59:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27495 states, 25294 states have (on average 1.697714873092433) internal successors, (42942), 25962 states have internal predecessors, (42942), 1143 states have call successors, (1143), 390 states have call predecessors, (1143), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-16 19:59:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27495 states to 27495 states and 49324 transitions. [2025-03-16 19:59:58,515 INFO L78 Accepts]: Start accepts. Automaton has 27495 states and 49324 transitions. Word has length 131 [2025-03-16 19:59:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:58,517 INFO L471 AbstractCegarLoop]: Abstraction has 27495 states and 49324 transitions. [2025-03-16 19:59:58,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 27495 states and 49324 transitions. [2025-03-16 19:59:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:59:58,528 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:58,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:58,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:59:58,529 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:58,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 129106930, now seen corresponding path program 1 times [2025-03-16 19:59:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:58,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300431492] [2025-03-16 19:59:58,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:58,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:58,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:59:58,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:59:58,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:58,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:58,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:58,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300431492] [2025-03-16 19:59:58,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300431492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:58,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:58,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:58,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800105581] [2025-03-16 19:59:58,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:58,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:58,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:58,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:58,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:58,661 INFO L87 Difference]: Start difference. First operand 27495 states and 49324 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:00,463 INFO L93 Difference]: Finished difference Result 88032 states and 164633 transitions. [2025-03-16 20:00:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:00,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 20:00:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:00,710 INFO L225 Difference]: With dead ends: 88032 [2025-03-16 20:00:00,710 INFO L226 Difference]: Without dead ends: 62673 [2025-03-16 20:00:00,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:00,801 INFO L435 NwaCegarLoop]: 4519 mSDtfsCounter, 4965 mSDsluCounter, 13584 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4992 SdHoareTripleChecker+Valid, 18103 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:00,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4992 Valid, 18103 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:00:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62673 states. [2025-03-16 20:00:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62673 to 58911. [2025-03-16 20:00:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7110401663078179) internal successors, (92184), 55938 states have internal predecessors, (92184), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 20:00:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112966 transitions. [2025-03-16 20:00:03,488 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112966 transitions. Word has length 131 [2025-03-16 20:00:03,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:03,488 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112966 transitions. [2025-03-16 20:00:03,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:03,488 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112966 transitions. [2025-03-16 20:00:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:00:03,505 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:03,505 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:03,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:00:03,506 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:03,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:03,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1623019379, now seen corresponding path program 1 times [2025-03-16 20:00:03,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:03,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795938295] [2025-03-16 20:00:03,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:03,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:03,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:00:03,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:00:03,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:03,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795938295] [2025-03-16 20:00:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795938295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:03,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:03,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125471627] [2025-03-16 20:00:03,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:03,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:03,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:03,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:03,592 INFO L87 Difference]: Start difference. First operand 58911 states and 112966 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:06,239 INFO L93 Difference]: Finished difference Result 133198 states and 267048 transitions. [2025-03-16 20:00:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:06,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 20:00:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:06,597 INFO L225 Difference]: With dead ends: 133198 [2025-03-16 20:00:06,597 INFO L226 Difference]: Without dead ends: 76423 [2025-03-16 20:00:06,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:06,850 INFO L435 NwaCegarLoop]: 4280 mSDtfsCounter, 4550 mSDsluCounter, 8436 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 12716 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:06,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4567 Valid, 12716 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:00:06,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76423 states. [2025-03-16 20:00:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76423 to 58911. [2025-03-16 20:00:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7086457791966738) internal successors, (92055), 55938 states have internal predecessors, (92055), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 20:00:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112837 transitions. [2025-03-16 20:00:09,706 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112837 transitions. Word has length 131 [2025-03-16 20:00:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:09,707 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112837 transitions. [2025-03-16 20:00:09,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112837 transitions. [2025-03-16 20:00:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:00:09,727 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:09,727 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:09,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:00:09,728 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:09,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:09,728 INFO L85 PathProgramCache]: Analyzing trace with hash 424284114, now seen corresponding path program 1 times [2025-03-16 20:00:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351126378] [2025-03-16 20:00:09,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:09,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:00:09,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:00:09,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:09,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351126378] [2025-03-16 20:00:09,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351126378] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:09,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:09,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275001166] [2025-03-16 20:00:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:09,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:09,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:09,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:09,832 INFO L87 Difference]: Start difference. First operand 58911 states and 112837 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:12,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:12,755 INFO L93 Difference]: Finished difference Result 131009 states and 262412 transitions. [2025-03-16 20:00:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:12,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 20:00:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:13,160 INFO L225 Difference]: With dead ends: 131009 [2025-03-16 20:00:13,160 INFO L226 Difference]: Without dead ends: 74234 [2025-03-16 20:00:13,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:13,366 INFO L435 NwaCegarLoop]: 4277 mSDtfsCounter, 4547 mSDsluCounter, 8431 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 12708 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:13,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 12708 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:00:13,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74234 states. [2025-03-16 20:00:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74234 to 58911. [2025-03-16 20:00:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7062513920855298) internal successors, (91926), 55938 states have internal predecessors, (91926), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 20:00:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112708 transitions. [2025-03-16 20:00:17,031 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112708 transitions. Word has length 131 [2025-03-16 20:00:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:17,031 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112708 transitions. [2025-03-16 20:00:17,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:17,032 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112708 transitions. [2025-03-16 20:00:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:00:17,047 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:17,047 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:17,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:00:17,047 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:17,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash 939804563, now seen corresponding path program 1 times [2025-03-16 20:00:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:17,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991371359] [2025-03-16 20:00:17,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:17,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:17,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:00:17,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:00:17,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:17,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:17,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:17,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991371359] [2025-03-16 20:00:17,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991371359] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:17,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:17,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:17,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820814002] [2025-03-16 20:00:17,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:17,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:17,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:17,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:17,139 INFO L87 Difference]: Start difference. First operand 58911 states and 112708 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:21,978 INFO L93 Difference]: Finished difference Result 189664 states and 389723 transitions. [2025-03-16 20:00:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:21,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 20:00:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:22,648 INFO L225 Difference]: With dead ends: 189664 [2025-03-16 20:00:22,649 INFO L226 Difference]: Without dead ends: 132889 [2025-03-16 20:00:22,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:22,872 INFO L435 NwaCegarLoop]: 4506 mSDtfsCounter, 4782 mSDsluCounter, 13547 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4798 SdHoareTripleChecker+Valid, 18053 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:22,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4798 Valid, 18053 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:00:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132889 states.