./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.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.15.cil.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 eebc57bb84d5e49c07b21e35f27ee095cb699b6ae996e22651132239fcb21755 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:59:56,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:59:56,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:59:56,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:59:56,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:59:56,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:59:56,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:59:56,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:59:56,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:59:56,703 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:59:56,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:59:56,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:59:56,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:59:56,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:59:56,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:59:56,705 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:59:56,705 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:59:56,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:59:56,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:59:56,706 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 -> eebc57bb84d5e49c07b21e35f27ee095cb699b6ae996e22651132239fcb21755 [2025-03-16 19:59:56,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:59:56,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:59:56,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:59:56,947 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:59:56,947 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:59:56,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c [2025-03-16 19:59:58,092 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ca35b1c/2eec406873834bcfa785e8b39309f2b6/FLAGe94f3ec25 [2025-03-16 19:59:58,627 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:59:58,628 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c [2025-03-16 19:59:58,673 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ca35b1c/2eec406873834bcfa785e8b39309f2b6/FLAGe94f3ec25 [2025-03-16 19:59:58,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ca35b1c/2eec406873834bcfa785e8b39309f2b6 [2025-03-16 19:59:58,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:59:58,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:59:58,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:59:58,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:59:58,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:59:58,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:59:58" (1/1) ... [2025-03-16 19:59:58,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dce2437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:58, skipping insertion in model container [2025-03-16 19:59:58,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:59:58" (1/1) ... [2025-03-16 19:59:58,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:59:59,881 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.15.cil.c[381679,381692] [2025-03-16 19:59:59,909 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.15.cil.c[383339,383352] [2025-03-16 20:00:00,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:00:00,203 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:00:00,712 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.15.cil.c[381679,381692] [2025-03-16 20:00:00,715 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.15.cil.c[383339,383352] [2025-03-16 20:00:00,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:00:00,787 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:00:00,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00 WrapperNode [2025-03-16 20:00:00,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:00:00,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:00:00,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:00:00,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:00:00,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:00,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,185 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13246 [2025-03-16 20:00:01,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:00:01,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:00:01,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:00:01,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:00:01,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,368 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 20:00:01,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,585 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:00:01,715 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:00:01,716 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:00:01,716 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:00:01,717 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (1/1) ... [2025-03-16 20:00:01,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:00:01,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:00:01,745 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 20:00:01,773 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 20:00:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:00:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:00:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:00:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:00:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:00:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:00:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:00:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-16 20:00:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-16 20:00:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:00:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:00:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:00:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:00:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:00:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:00:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:00:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:00:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:00:01,902 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:00:01,903 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:00:08,101 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:00:08,101 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:00:08,102 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:00:08,102 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:00:08,102 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:00:08,103 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:00:08,103 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:00:08,345 INFO L? ?]: Removed 1749 outVars from TransFormulas that were not future-live. [2025-03-16 20:00:08,345 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:00:08,404 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:00:08,405 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:00:08,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:00:08 BoogieIcfgContainer [2025-03-16 20:00:08,405 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:00:08,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:00:08,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:00:08,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:00:08,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:59:58" (1/3) ... [2025-03-16 20:00:08,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd917e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:00:08, skipping insertion in model container [2025-03-16 20:00:08,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:00" (2/3) ... [2025-03-16 20:00:08,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd917e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:00:08, skipping insertion in model container [2025-03-16 20:00:08,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:00:08" (3/3) ... [2025-03-16 20:00:08,412 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.15.cil.c [2025-03-16 20:00:08,425 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:00:08,428 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.15.cil.c that has 8 procedures, 2515 locations, 1 initial locations, 17 loop locations, and 2 error locations. [2025-03-16 20:00:08,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:00:08,536 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;@3b018133, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:00:08,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:00:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2477 states have (on average 1.861929753734356) internal successors, (4612), 2481 states have internal predecessors, (4612), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 20:00:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:08,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:08,558 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:08,559 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:08,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1516679337, now seen corresponding path program 1 times [2025-03-16 20:00:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:08,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497407653] [2025-03-16 20:00:08,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:08,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:08,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:08,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:08,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:08,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:09,198 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 20:00:09,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:09,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497407653] [2025-03-16 20:00:09,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497407653] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:09,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:09,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:09,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496785141] [2025-03-16 20:00:09,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:09,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:09,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:09,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:09,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:09,236 INFO L87 Difference]: Start difference. First operand has 2515 states, 2477 states have (on average 1.861929753734356) internal successors, (4612), 2481 states have internal predecessors, (4612), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:10,089 INFO L93 Difference]: Finished difference Result 5433 states and 10021 transitions. [2025-03-16 20:00:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:00:10,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:10,123 INFO L225 Difference]: With dead ends: 5433 [2025-03-16 20:00:10,124 INFO L226 Difference]: Without dead ends: 2929 [2025-03-16 20:00:10,135 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 20:00:10,137 INFO L435 NwaCegarLoop]: 4460 mSDtfsCounter, 5165 mSDsluCounter, 9199 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 13659 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:10,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 13659 Invalid, 698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:00:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2025-03-16 20:00:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2896. [2025-03-16 20:00:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2830 states have (on average 1.8063604240282685) internal successors, (5112), 2834 states have internal predecessors, (5112), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 20:00:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 5213 transitions. [2025-03-16 20:00:10,314 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 5213 transitions. Word has length 172 [2025-03-16 20:00:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:10,315 INFO L471 AbstractCegarLoop]: Abstraction has 2896 states and 5213 transitions. [2025-03-16 20:00:10,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 5213 transitions. [2025-03-16 20:00:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:10,319 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:10,319 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:10,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:00:10,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:10,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2019231975, now seen corresponding path program 1 times [2025-03-16 20:00:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:10,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130193049] [2025-03-16 20:00:10,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:10,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:10,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:10,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:10,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:10,572 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 20:00:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:10,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130193049] [2025-03-16 20:00:10,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130193049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:10,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627430607] [2025-03-16 20:00:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:10,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:10,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:10,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:10,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:10,578 INFO L87 Difference]: Start difference. First operand 2896 states and 5213 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:10,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:10,995 INFO L93 Difference]: Finished difference Result 3736 states and 6599 transitions. [2025-03-16 20:00:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:10,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:11,013 INFO L225 Difference]: With dead ends: 3736 [2025-03-16 20:00:11,014 INFO L226 Difference]: Without dead ends: 2980 [2025-03-16 20:00:11,017 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 20:00:11,018 INFO L435 NwaCegarLoop]: 4442 mSDtfsCounter, 4807 mSDsluCounter, 8715 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 13157 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:11,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4828 Valid, 13157 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2025-03-16 20:00:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2896. [2025-03-16 20:00:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2830 states have (on average 1.8056537102473498) internal successors, (5110), 2834 states have internal predecessors, (5110), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 20:00:11,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 5211 transitions. [2025-03-16 20:00:11,115 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 5211 transitions. Word has length 172 [2025-03-16 20:00:11,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:11,116 INFO L471 AbstractCegarLoop]: Abstraction has 2896 states and 5211 transitions. [2025-03-16 20:00:11,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:11,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 5211 transitions. [2025-03-16 20:00:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:11,121 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:11,121 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:11,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:00:11,122 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:11,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:11,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2082804120, now seen corresponding path program 1 times [2025-03-16 20:00:11,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:11,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419025612] [2025-03-16 20:00:11,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:11,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:11,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:11,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:11,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:11,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:11,357 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 20:00:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419025612] [2025-03-16 20:00:11,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419025612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:11,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:11,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071192240] [2025-03-16 20:00:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:11,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:11,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:11,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:11,361 INFO L87 Difference]: Start difference. First operand 2896 states and 5211 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:12,170 INFO L93 Difference]: Finished difference Result 4151 states and 7270 transitions. [2025-03-16 20:00:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:12,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:12,185 INFO L225 Difference]: With dead ends: 4151 [2025-03-16 20:00:12,185 INFO L226 Difference]: Without dead ends: 3395 [2025-03-16 20:00:12,189 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 20:00:12,189 INFO L435 NwaCegarLoop]: 4792 mSDtfsCounter, 5162 mSDsluCounter, 14433 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5183 SdHoareTripleChecker+Valid, 19225 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:12,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5183 Valid, 19225 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:00:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2025-03-16 20:00:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3254. [2025-03-16 20:00:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 3159 states have (on average 1.783792339347895) internal successors, (5635), 3164 states have internal predecessors, (5635), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (75), 72 states have call predecessors, (75), 71 states have call successors, (75) [2025-03-16 20:00:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 5783 transitions. [2025-03-16 20:00:12,281 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 5783 transitions. Word has length 172 [2025-03-16 20:00:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:12,282 INFO L471 AbstractCegarLoop]: Abstraction has 3254 states and 5783 transitions. [2025-03-16 20:00:12,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 5783 transitions. [2025-03-16 20:00:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:12,284 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:12,284 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:12,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:00:12,285 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:12,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2079839431, now seen corresponding path program 1 times [2025-03-16 20:00:12,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:12,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796357155] [2025-03-16 20:00:12,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:12,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:12,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:12,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:12,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:12,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:12,431 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 20:00:12,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:12,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796357155] [2025-03-16 20:00:12,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796357155] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:12,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:12,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:12,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157010115] [2025-03-16 20:00:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:12,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:12,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:12,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:12,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:12,434 INFO L87 Difference]: Start difference. First operand 3254 states and 5783 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:13,227 INFO L93 Difference]: Finished difference Result 5290 states and 9115 transitions. [2025-03-16 20:00:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:13,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:13,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:13,250 INFO L225 Difference]: With dead ends: 5290 [2025-03-16 20:00:13,250 INFO L226 Difference]: Without dead ends: 4176 [2025-03-16 20:00:13,256 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 20:00:13,257 INFO L435 NwaCegarLoop]: 4784 mSDtfsCounter, 5154 mSDsluCounter, 14411 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5175 SdHoareTripleChecker+Valid, 19195 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:13,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5175 Valid, 19195 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:00:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2025-03-16 20:00:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 4018. [2025-03-16 20:00:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 3863 states have (on average 1.753559409785141) internal successors, (6774), 3872 states have internal predecessors, (6774), 117 states have call successors, (117), 31 states have call predecessors, (117), 36 states have return successors, (131), 118 states have call predecessors, (131), 115 states have call successors, (131) [2025-03-16 20:00:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 7022 transitions. [2025-03-16 20:00:13,368 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 7022 transitions. Word has length 172 [2025-03-16 20:00:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:13,368 INFO L471 AbstractCegarLoop]: Abstraction has 4018 states and 7022 transitions. [2025-03-16 20:00:13,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 7022 transitions. [2025-03-16 20:00:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:13,374 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:13,374 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:13,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:00:13,374 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:13,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1418249958, now seen corresponding path program 1 times [2025-03-16 20:00:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:13,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118102620] [2025-03-16 20:00:13,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:13,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:13,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:13,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:13,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:13,532 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 20:00:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118102620] [2025-03-16 20:00:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118102620] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:13,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:13,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478848524] [2025-03-16 20:00:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:13,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:13,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:13,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:13,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:13,534 INFO L87 Difference]: Start difference. First operand 4018 states and 7022 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:14,289 INFO L93 Difference]: Finished difference Result 7766 states and 13204 transitions. [2025-03-16 20:00:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:14,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:14,312 INFO L225 Difference]: With dead ends: 7766 [2025-03-16 20:00:14,312 INFO L226 Difference]: Without dead ends: 5888 [2025-03-16 20:00:14,320 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 20:00:14,323 INFO L435 NwaCegarLoop]: 4781 mSDtfsCounter, 5149 mSDsluCounter, 14402 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 19183 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:14,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5170 Valid, 19183 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:00:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2025-03-16 20:00:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5687. [2025-03-16 20:00:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5406 states have (on average 1.7229004809470958) internal successors, (9314), 5429 states have internal predecessors, (9314), 205 states have call successors, (205), 55 states have call predecessors, (205), 74 states have return successors, (267), 210 states have call predecessors, (267), 203 states have call successors, (267) [2025-03-16 20:00:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 9786 transitions. [2025-03-16 20:00:14,485 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 9786 transitions. Word has length 172 [2025-03-16 20:00:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:14,485 INFO L471 AbstractCegarLoop]: Abstraction has 5687 states and 9786 transitions. [2025-03-16 20:00:14,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 9786 transitions. [2025-03-16 20:00:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:14,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:14,490 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:14,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:00:14,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:14,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1928227609, now seen corresponding path program 1 times [2025-03-16 20:00:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:14,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540336771] [2025-03-16 20:00:14,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:14,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:14,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:14,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:14,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:14,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:14,644 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 20:00:14,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540336771] [2025-03-16 20:00:14,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540336771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:14,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:14,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725735024] [2025-03-16 20:00:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:14,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:14,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:14,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:14,646 INFO L87 Difference]: Start difference. First operand 5687 states and 9786 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:15,479 INFO L93 Difference]: Finished difference Result 13263 states and 22514 transitions. [2025-03-16 20:00:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:15,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:15,522 INFO L225 Difference]: With dead ends: 13263 [2025-03-16 20:00:15,522 INFO L226 Difference]: Without dead ends: 9716 [2025-03-16 20:00:15,536 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 20:00:15,537 INFO L435 NwaCegarLoop]: 4778 mSDtfsCounter, 5144 mSDsluCounter, 14393 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5165 SdHoareTripleChecker+Valid, 19171 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:15,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5165 Valid, 19171 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:00:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9716 states. [2025-03-16 20:00:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9716 to 9430. [2025-03-16 20:00:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7058227277846605) internal successors, (15146), 8948 states have internal predecessors, (15146), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:00:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16162 transitions. [2025-03-16 20:00:15,777 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16162 transitions. Word has length 172 [2025-03-16 20:00:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:15,778 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16162 transitions. [2025-03-16 20:00:15,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16162 transitions. [2025-03-16 20:00:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:15,783 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:15,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:15,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:00:15,783 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:15,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:15,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1759083834, now seen corresponding path program 1 times [2025-03-16 20:00:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065993608] [2025-03-16 20:00:15,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:15,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:15,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:15,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:15,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:15,900 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 20:00:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065993608] [2025-03-16 20:00:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065993608] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:15,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:15,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:15,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820213492] [2025-03-16 20:00:15,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:15,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:15,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:15,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:15,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:15,902 INFO L87 Difference]: Start difference. First operand 9430 states and 16162 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:16,423 INFO L93 Difference]: Finished difference Result 18546 states and 32026 transitions. [2025-03-16 20:00:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:16,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:16,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:16,456 INFO L225 Difference]: With dead ends: 18546 [2025-03-16 20:00:16,456 INFO L226 Difference]: Without dead ends: 11256 [2025-03-16 20:00:16,471 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 20:00:16,472 INFO L435 NwaCegarLoop]: 4429 mSDtfsCounter, 4799 mSDsluCounter, 8690 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 13119 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:16,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4820 Valid, 13119 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11256 states. [2025-03-16 20:00:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11256 to 9430. [2025-03-16 20:00:16,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7039080977587566) internal successors, (15129), 8948 states have internal predecessors, (15129), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:00:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16145 transitions. [2025-03-16 20:00:16,708 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16145 transitions. Word has length 172 [2025-03-16 20:00:16,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:16,708 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16145 transitions. [2025-03-16 20:00:16,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16145 transitions. [2025-03-16 20:00:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:16,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:16,714 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:16,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:00:16,714 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:16,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:16,714 INFO L85 PathProgramCache]: Analyzing trace with hash 601677063, now seen corresponding path program 1 times [2025-03-16 20:00:16,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:16,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648684677] [2025-03-16 20:00:16,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:16,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:16,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:16,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:16,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:16,834 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 20:00:16,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:16,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648684677] [2025-03-16 20:00:16,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648684677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:16,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:16,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:16,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739640129] [2025-03-16 20:00:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:16,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:16,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:16,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:16,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:16,838 INFO L87 Difference]: Start difference. First operand 9430 states and 16145 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:17,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:17,294 INFO L93 Difference]: Finished difference Result 18463 states and 31826 transitions. [2025-03-16 20:00:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:17,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:17,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:17,332 INFO L225 Difference]: With dead ends: 18463 [2025-03-16 20:00:17,335 INFO L226 Difference]: Without dead ends: 11173 [2025-03-16 20:00:17,355 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 20:00:17,356 INFO L435 NwaCegarLoop]: 4426 mSDtfsCounter, 4796 mSDsluCounter, 8685 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 13111 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:17,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4817 Valid, 13111 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11173 states. [2025-03-16 20:00:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11173 to 9430. [2025-03-16 20:00:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7019934677328528) internal successors, (15112), 8948 states have internal predecessors, (15112), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:00:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16128 transitions. [2025-03-16 20:00:17,755 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16128 transitions. Word has length 172 [2025-03-16 20:00:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:17,756 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16128 transitions. [2025-03-16 20:00:17,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16128 transitions. [2025-03-16 20:00:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:17,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:17,760 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:17,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:00:17,761 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:17,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1816021338, now seen corresponding path program 1 times [2025-03-16 20:00:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:17,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527059357] [2025-03-16 20:00:17,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:17,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:17,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:17,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:17,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:17,913 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 20:00:17,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:17,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527059357] [2025-03-16 20:00:17,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527059357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:17,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774911434] [2025-03-16 20:00:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:17,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:17,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:17,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:17,915 INFO L87 Difference]: Start difference. First operand 9430 states and 16128 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:18,889 INFO L93 Difference]: Finished difference Result 25618 states and 44006 transitions. [2025-03-16 20:00:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:18,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:18,947 INFO L225 Difference]: With dead ends: 25618 [2025-03-16 20:00:18,948 INFO L226 Difference]: Without dead ends: 18328 [2025-03-16 20:00:18,973 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 20:00:18,974 INFO L435 NwaCegarLoop]: 4765 mSDtfsCounter, 5123 mSDsluCounter, 14356 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 19121 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:18,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5144 Valid, 19121 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:00:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18328 states. [2025-03-16 20:00:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18328 to 17915. [2025-03-16 20:00:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.7037567084078713) internal successors, (28572), 16985 states have internal predecessors, (28572), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:00:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 31060 transitions. [2025-03-16 20:00:19,459 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 31060 transitions. Word has length 172 [2025-03-16 20:00:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:19,459 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 31060 transitions. [2025-03-16 20:00:19,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 31060 transitions. [2025-03-16 20:00:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:19,467 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:19,467 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:19,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:00:19,468 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:19,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1894011609, now seen corresponding path program 1 times [2025-03-16 20:00:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086761521] [2025-03-16 20:00:19,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:19,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:19,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:19,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:19,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:19,579 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 20:00:19,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086761521] [2025-03-16 20:00:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086761521] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:19,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018519627] [2025-03-16 20:00:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:19,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:19,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:19,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:19,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:19,581 INFO L87 Difference]: Start difference. First operand 17915 states and 31060 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:20,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:20,293 INFO L93 Difference]: Finished difference Result 38345 states and 67794 transitions. [2025-03-16 20:00:20,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:20,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:20,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:20,371 INFO L225 Difference]: With dead ends: 38345 [2025-03-16 20:00:20,371 INFO L226 Difference]: Without dead ends: 22570 [2025-03-16 20:00:20,406 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 20:00:20,407 INFO L435 NwaCegarLoop]: 4421 mSDtfsCounter, 4792 mSDsluCounter, 8676 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 13097 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:20,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4813 Valid, 13097 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22570 states. [2025-03-16 20:00:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22570 to 17915. [2025-03-16 20:00:20,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.701788908765653) internal successors, (28539), 16985 states have internal predecessors, (28539), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:00:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 31027 transitions. [2025-03-16 20:00:20,921 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 31027 transitions. Word has length 172 [2025-03-16 20:00:20,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:20,921 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 31027 transitions. [2025-03-16 20:00:20,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:20,921 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 31027 transitions. [2025-03-16 20:00:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:20,930 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:20,930 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:20,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:00:20,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:20,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:20,931 INFO L85 PathProgramCache]: Analyzing trace with hash 458777222, now seen corresponding path program 1 times [2025-03-16 20:00:20,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:20,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93576963] [2025-03-16 20:00:20,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:20,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:21,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:21,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:21,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:21,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:21,085 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 20:00:21,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:21,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93576963] [2025-03-16 20:00:21,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93576963] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:21,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:21,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:21,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462495950] [2025-03-16 20:00:21,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:21,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:21,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:21,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:21,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:21,087 INFO L87 Difference]: Start difference. First operand 17915 states and 31027 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:21,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:21,740 INFO L93 Difference]: Finished difference Result 37855 states and 66748 transitions. [2025-03-16 20:00:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:21,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:21,815 INFO L225 Difference]: With dead ends: 37855 [2025-03-16 20:00:21,816 INFO L226 Difference]: Without dead ends: 22080 [2025-03-16 20:00:21,855 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 20:00:21,856 INFO L435 NwaCegarLoop]: 4416 mSDtfsCounter, 4788 mSDsluCounter, 8667 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 13083 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:21,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 13083 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22080 states. [2025-03-16 20:00:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22080 to 17915. [2025-03-16 20:00:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.6998211091234348) internal successors, (28506), 16985 states have internal predecessors, (28506), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:00:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 30994 transitions. [2025-03-16 20:00:22,653 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 30994 transitions. Word has length 172 [2025-03-16 20:00:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:22,656 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 30994 transitions. [2025-03-16 20:00:22,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 30994 transitions. [2025-03-16 20:00:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:22,664 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:22,665 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:22,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:00:22,665 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:22,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1538319269, now seen corresponding path program 1 times [2025-03-16 20:00:22,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:22,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32407024] [2025-03-16 20:00:22,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:22,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:22,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:22,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:22,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:22,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:22,813 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 20:00:22,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:22,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32407024] [2025-03-16 20:00:22,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32407024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:22,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:22,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:22,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533935] [2025-03-16 20:00:22,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:22,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:22,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:22,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:22,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:22,817 INFO L87 Difference]: Start difference. First operand 17915 states and 30994 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:24,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:24,341 INFO L93 Difference]: Finished difference Result 53521 states and 94534 transitions. [2025-03-16 20:00:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:24,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:24,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:24,447 INFO L225 Difference]: With dead ends: 53521 [2025-03-16 20:00:24,448 INFO L226 Difference]: Without dead ends: 37746 [2025-03-16 20:00:24,484 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 20:00:24,486 INFO L435 NwaCegarLoop]: 4748 mSDtfsCounter, 5099 mSDsluCounter, 14309 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5120 SdHoareTripleChecker+Valid, 19057 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:24,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5120 Valid, 19057 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:00:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37746 states. [2025-03-16 20:00:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37746 to 37153. [2025-03-16 20:00:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37153 states, 34658 states have (on average 1.7137745974955276) internal successors, (59396), 35327 states have internal predecessors, (59396), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 1056 states have return successors, (5531), 1498 states have call predecessors, (5531), 1435 states have call successors, (5531) [2025-03-16 20:00:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37153 states to 37153 states and 66364 transitions. [2025-03-16 20:00:25,586 INFO L78 Accepts]: Start accepts. Automaton has 37153 states and 66364 transitions. Word has length 172 [2025-03-16 20:00:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:25,586 INFO L471 AbstractCegarLoop]: Abstraction has 37153 states and 66364 transitions. [2025-03-16 20:00:25,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 37153 states and 66364 transitions. [2025-03-16 20:00:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:25,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:25,596 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:25,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:00:25,596 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:25,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1573143206, now seen corresponding path program 1 times [2025-03-16 20:00:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595407554] [2025-03-16 20:00:25,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:25,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:25,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:25,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:25,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:25,690 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 20:00:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595407554] [2025-03-16 20:00:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595407554] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:25,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670561828] [2025-03-16 20:00:25,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:25,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:25,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:25,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:25,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:25,692 INFO L87 Difference]: Start difference. First operand 37153 states and 66364 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:28,215 INFO L93 Difference]: Finished difference Result 123975 states and 228859 transitions. [2025-03-16 20:00:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:28,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:28,612 INFO L225 Difference]: With dead ends: 123975 [2025-03-16 20:00:28,613 INFO L226 Difference]: Without dead ends: 88962 [2025-03-16 20:00:28,731 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 20:00:28,732 INFO L435 NwaCegarLoop]: 4743 mSDtfsCounter, 5456 mSDsluCounter, 14289 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5491 SdHoareTripleChecker+Valid, 19032 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:28,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5491 Valid, 19032 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:00:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88962 states. [2025-03-16 20:00:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88962 to 82484. [2025-03-16 20:00:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82484 states, 76867 states have (on average 1.7387435440436079) internal successors, (133652), 78930 states have internal predecessors, (133652), 2781 states have call successors, (2781), 775 states have call predecessors, (2781), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 20:00:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82484 states to 82484 states and 155596 transitions. [2025-03-16 20:00:31,769 INFO L78 Accepts]: Start accepts. Automaton has 82484 states and 155596 transitions. Word has length 172 [2025-03-16 20:00:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:31,769 INFO L471 AbstractCegarLoop]: Abstraction has 82484 states and 155596 transitions. [2025-03-16 20:00:31,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 82484 states and 155596 transitions. [2025-03-16 20:00:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:31,787 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:31,787 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:31,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:00:31,787 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:31,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:31,788 INFO L85 PathProgramCache]: Analyzing trace with hash -365396091, now seen corresponding path program 1 times [2025-03-16 20:00:31,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:31,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995566543] [2025-03-16 20:00:31,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:31,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:31,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:31,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:31,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:31,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:31,866 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 20:00:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995566543] [2025-03-16 20:00:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995566543] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685372749] [2025-03-16 20:00:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:31,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:31,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:31,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:31,868 INFO L87 Difference]: Start difference. First operand 82484 states and 155596 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:36,186 INFO L93 Difference]: Finished difference Result 193474 states and 378568 transitions. [2025-03-16 20:00:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:00:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:36,666 INFO L225 Difference]: With dead ends: 193474 [2025-03-16 20:00:36,666 INFO L226 Difference]: Without dead ends: 113130 [2025-03-16 20:00:37,004 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 20:00:37,004 INFO L435 NwaCegarLoop]: 4409 mSDtfsCounter, 4781 mSDsluCounter, 8652 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 13061 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:37,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 13061 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:00:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113130 states. [2025-03-16 20:00:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113130 to 82484. [2025-03-16 20:00:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82484 states, 76867 states have (on average 1.737065320618731) internal successors, (133523), 78930 states have internal predecessors, (133523), 2781 states have call successors, (2781), 775 states have call predecessors, (2781), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 20:00:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82484 states to 82484 states and 155467 transitions. [2025-03-16 20:00:42,218 INFO L78 Accepts]: Start accepts. Automaton has 82484 states and 155467 transitions. Word has length 172 [2025-03-16 20:00:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:42,218 INFO L471 AbstractCegarLoop]: Abstraction has 82484 states and 155467 transitions. [2025-03-16 20:00:42,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 82484 states and 155467 transitions. [2025-03-16 20:00:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:00:42,234 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:42,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:42,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 20:00:42,235 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:42,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1813402938, now seen corresponding path program 1 times [2025-03-16 20:00:42,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:42,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049213518] [2025-03-16 20:00:42,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:42,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:42,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:00:42,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:00:42,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:42,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:42,331 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 20:00:42,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:42,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049213518] [2025-03-16 20:00:42,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049213518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:42,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:42,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:42,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639194149] [2025-03-16 20:00:42,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:42,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:42,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:42,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:42,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:42,333 INFO L87 Difference]: Start difference. First operand 82484 states and 155467 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)