./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.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_label42+token_ring.03.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:56:49,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:56:49,347 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:56:49,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:56:49,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:56:49,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:56:49,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:56:49,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:56:49,373 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:56:49,373 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:56:49,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:56:49,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:56:49,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:56:49,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:56:49,374 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:56:49,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:56:49,376 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:49,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:56:49,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:56:49,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:56:49,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:56:49,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:56:49,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:56:49,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:56:49,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:56:49,377 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 -> 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af [2025-03-16 19:56:49,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:56:49,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:56:49,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:56:49,595 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:56:49,595 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:56:49,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2025-03-16 19:56:50,748 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af68eb820/41109283bfa446f4b223ff2edf907a24/FLAGfbf646103 [2025-03-16 19:56:51,228 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:56:51,229 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2025-03-16 19:56:51,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af68eb820/41109283bfa446f4b223ff2edf907a24/FLAGfbf646103 [2025-03-16 19:56:51,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af68eb820/41109283bfa446f4b223ff2edf907a24 [2025-03-16 19:56:51,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:56:51,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:56:51,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:51,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:56:51,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:56:51,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:51" (1/1) ... [2025-03-16 19:56:51,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7826c68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:51, skipping insertion in model container [2025-03-16 19:56:51,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:51" (1/1) ... [2025-03-16 19:56:51,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:56:52,592 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c[378560,378573] [2025-03-16 19:56:52,629 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c[383339,383352] [2025-03-16 19:56:52,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:52,810 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:56:53,317 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c[378560,378573] [2025-03-16 19:56:53,323 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c[383339,383352] [2025-03-16 19:56:53,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:53,379 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:56:53,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53 WrapperNode [2025-03-16 19:56:53,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:53,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:53,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:56:53,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:56:53,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:53,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:53,784 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12672 [2025-03-16 19:56:53,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:53,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:56:53,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:56:53,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:56:53,794 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:53,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:53,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:53,941 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:56:53,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:53,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:54,061 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:54,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:54,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:54,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:54,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:56:54,200 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:56:54,201 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:56:54,201 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:56:54,202 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (1/1) ... [2025-03-16 19:56:54,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:54,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:56:54,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:56:54,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:56:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:56:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:56:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:56:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:56:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:56:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:56:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:56:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:56:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:56:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:56:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:56:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:56:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:56:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:56:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:56:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:56:54,318 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:56:54,320 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:57:00,245 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:57:00,245 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:57:00,246 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:57:00,246 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:57:00,246 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:57:00,246 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:57:00,246 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:57:00,584 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2025-03-16 19:57:00,585 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:57:00,639 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:57:00,639 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:57:00,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:57:00 BoogieIcfgContainer [2025-03-16 19:57:00,639 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:57:00,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:57:00,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:57:00,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:57:00,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:56:51" (1/3) ... [2025-03-16 19:57:00,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dd203b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:57:00, skipping insertion in model container [2025-03-16 19:57:00,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:53" (2/3) ... [2025-03-16 19:57:00,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dd203b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:57:00, skipping insertion in model container [2025-03-16 19:57:00,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:57:00" (3/3) ... [2025-03-16 19:57:00,650 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-2.c [2025-03-16 19:57:00,661 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:57:00,664 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.03.cil-2.c that has 7 procedures, 2268 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2025-03-16 19:57:00,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:57:00,765 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;@182efa5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:57:00,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:57:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 2268 states, 2243 states have (on average 1.8791796700847079) internal successors, (4215), 2245 states have internal predecessors, (4215), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-16 19:57:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 19:57:00,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:00,783 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] [2025-03-16 19:57:00,783 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:00,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash -441018170, now seen corresponding path program 1 times [2025-03-16 19:57:00,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:00,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273629362] [2025-03-16 19:57:00,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:00,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:00,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 19:57:00,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 19:57:00,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:00,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:01,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:01,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273629362] [2025-03-16 19:57:01,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273629362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:01,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:01,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874184151] [2025-03-16 19:57:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:01,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:01,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:01,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:01,221 INFO L87 Difference]: Start difference. First operand has 2268 states, 2243 states have (on average 1.8791796700847079) internal successors, (4215), 2245 states have internal predecessors, (4215), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:01,711 INFO L93 Difference]: Finished difference Result 4676 states and 8720 transitions. [2025-03-16 19:57:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:57:01,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2025-03-16 19:57:01,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:01,734 INFO L225 Difference]: With dead ends: 4676 [2025-03-16 19:57:01,734 INFO L226 Difference]: Without dead ends: 2409 [2025-03-16 19:57:01,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:01,748 INFO L435 NwaCegarLoop]: 4133 mSDtfsCounter, 4335 mSDsluCounter, 8342 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 12475 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:01,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 12475 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:57:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2025-03-16 19:57:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2398. [2025-03-16 19:57:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2354 states have (on average 1.8351741716227699) internal successors, (4320), 2357 states have internal predecessors, (4320), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-03-16 19:57:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4379 transitions. [2025-03-16 19:57:01,874 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4379 transitions. Word has length 71 [2025-03-16 19:57:01,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:01,874 INFO L471 AbstractCegarLoop]: Abstraction has 2398 states and 4379 transitions. [2025-03-16 19:57:01,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4379 transitions. [2025-03-16 19:57:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 19:57:01,877 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:01,877 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] [2025-03-16 19:57:01,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:57:01,877 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:01,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2057089672, now seen corresponding path program 1 times [2025-03-16 19:57:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:01,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281337474] [2025-03-16 19:57:01,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:01,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 19:57:01,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 19:57:01,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:01,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:02,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:02,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281337474] [2025-03-16 19:57:02,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281337474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:02,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:02,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:02,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183846168] [2025-03-16 19:57:02,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:02,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:02,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:02,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:02,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:02,048 INFO L87 Difference]: Start difference. First operand 2398 states and 4379 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:02,302 INFO L93 Difference]: Finished difference Result 2690 states and 4831 transitions. [2025-03-16 19:57:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:57:02,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2025-03-16 19:57:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:02,314 INFO L225 Difference]: With dead ends: 2690 [2025-03-16 19:57:02,314 INFO L226 Difference]: Without dead ends: 2422 [2025-03-16 19:57:02,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:02,317 INFO L435 NwaCegarLoop]: 4115 mSDtfsCounter, 4228 mSDsluCounter, 8165 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 12280 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:02,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4239 Valid, 12280 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:57:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2025-03-16 19:57:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2398. [2025-03-16 19:57:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2354 states have (on average 1.8343245539507222) internal successors, (4318), 2357 states have internal predecessors, (4318), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-03-16 19:57:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4377 transitions. [2025-03-16 19:57:02,394 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4377 transitions. Word has length 71 [2025-03-16 19:57:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:02,394 INFO L471 AbstractCegarLoop]: Abstraction has 2398 states and 4377 transitions. [2025-03-16 19:57:02,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4377 transitions. [2025-03-16 19:57:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 19:57:02,396 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:02,397 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] [2025-03-16 19:57:02,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:57:02,397 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:02,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash 126470567, now seen corresponding path program 1 times [2025-03-16 19:57:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427072407] [2025-03-16 19:57:02,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:02,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:02,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 19:57:02,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 19:57:02,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:02,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:02,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:02,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427072407] [2025-03-16 19:57:02,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427072407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:02,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:02,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189903793] [2025-03-16 19:57:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:02,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:02,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:02,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:02,553 INFO L87 Difference]: Start difference. First operand 2398 states and 4377 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:03,006 INFO L93 Difference]: Finished difference Result 2830 states and 5034 transitions. [2025-03-16 19:57:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:03,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2025-03-16 19:57:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:03,016 INFO L225 Difference]: With dead ends: 2830 [2025-03-16 19:57:03,017 INFO L226 Difference]: Without dead ends: 2562 [2025-03-16 19:57:03,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:57:03,019 INFO L435 NwaCegarLoop]: 4228 mSDtfsCounter, 4313 mSDsluCounter, 12656 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 16884 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:03,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4324 Valid, 16884 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:57:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2025-03-16 19:57:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2523. [2025-03-16 19:57:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2460 states have (on average 1.8199186991869918) internal successors, (4477), 2464 states have internal predecessors, (4477), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2025-03-16 19:57:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4563 transitions. [2025-03-16 19:57:03,090 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4563 transitions. Word has length 71 [2025-03-16 19:57:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:03,090 INFO L471 AbstractCegarLoop]: Abstraction has 2523 states and 4563 transitions. [2025-03-16 19:57:03,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4563 transitions. [2025-03-16 19:57:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 19:57:03,092 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:03,092 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] [2025-03-16 19:57:03,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:57:03,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:03,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash 756929192, now seen corresponding path program 1 times [2025-03-16 19:57:03,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:03,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719230901] [2025-03-16 19:57:03,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:03,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 19:57:03,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 19:57:03,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:03,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:03,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719230901] [2025-03-16 19:57:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719230901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:03,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374320991] [2025-03-16 19:57:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:03,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:03,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:03,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:03,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:03,207 INFO L87 Difference]: Start difference. First operand 2523 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:03,621 INFO L93 Difference]: Finished difference Result 3218 states and 5617 transitions. [2025-03-16 19:57:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:03,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2025-03-16 19:57:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:03,632 INFO L225 Difference]: With dead ends: 3218 [2025-03-16 19:57:03,632 INFO L226 Difference]: Without dead ends: 2825 [2025-03-16 19:57:03,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:57:03,636 INFO L435 NwaCegarLoop]: 4224 mSDtfsCounter, 4308 mSDsluCounter, 12644 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4319 SdHoareTripleChecker+Valid, 16868 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:03,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4319 Valid, 16868 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:57:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2025-03-16 19:57:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2784. [2025-03-16 19:57:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2681 states have (on average 1.794106676613204) internal successors, (4810), 2689 states have internal predecessors, (4810), 65 states have call successors, (65), 30 states have call predecessors, (65), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2025-03-16 19:57:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4956 transitions. [2025-03-16 19:57:03,723 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4956 transitions. Word has length 71 [2025-03-16 19:57:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:03,723 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4956 transitions. [2025-03-16 19:57:03,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4956 transitions. [2025-03-16 19:57:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 19:57:03,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:03,724 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] [2025-03-16 19:57:03,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:57:03,725 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:03,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash 777266567, now seen corresponding path program 1 times [2025-03-16 19:57:03,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:03,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853500717] [2025-03-16 19:57:03,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:03,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:03,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 19:57:03,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 19:57:03,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:03,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:03,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853500717] [2025-03-16 19:57:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853500717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:03,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844021728] [2025-03-16 19:57:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:03,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:03,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:03,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:03,852 INFO L87 Difference]: Start difference. First operand 2784 states and 4956 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:04,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:04,316 INFO L93 Difference]: Finished difference Result 4121 states and 7001 transitions. [2025-03-16 19:57:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:04,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2025-03-16 19:57:04,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:04,337 INFO L225 Difference]: With dead ends: 4121 [2025-03-16 19:57:04,337 INFO L226 Difference]: Without dead ends: 3467 [2025-03-16 19:57:04,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:57:04,343 INFO L435 NwaCegarLoop]: 4219 mSDtfsCounter, 4395 mSDsluCounter, 12624 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 16843 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:04,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4410 Valid, 16843 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:57:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2025-03-16 19:57:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 3321. [2025-03-16 19:57:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3136 states have (on average 1.7544642857142858) internal successors, (5502), 3158 states have internal predecessors, (5502), 109 states have call successors, (109), 54 states have call predecessors, (109), 74 states have return successors, (173), 116 states have call predecessors, (173), 109 states have call successors, (173) [2025-03-16 19:57:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 5784 transitions. [2025-03-16 19:57:04,546 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 5784 transitions. Word has length 71 [2025-03-16 19:57:04,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:04,547 INFO L471 AbstractCegarLoop]: Abstraction has 3321 states and 5784 transitions. [2025-03-16 19:57:04,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 5784 transitions. [2025-03-16 19:57:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 19:57:04,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:04,548 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] [2025-03-16 19:57:04,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:57:04,549 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:04,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1470659272, now seen corresponding path program 1 times [2025-03-16 19:57:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049781893] [2025-03-16 19:57:04,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:04,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:04,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 19:57:04,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 19:57:04,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:04,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:04,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:04,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049781893] [2025-03-16 19:57:04,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049781893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:04,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:04,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:04,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253069519] [2025-03-16 19:57:04,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:04,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:04,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:04,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:04,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:04,617 INFO L87 Difference]: Start difference. First operand 3321 states and 5784 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:04,824 INFO L93 Difference]: Finished difference Result 4628 states and 7824 transitions. [2025-03-16 19:57:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:57:04,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2025-03-16 19:57:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:04,837 INFO L225 Difference]: With dead ends: 4628 [2025-03-16 19:57:04,837 INFO L226 Difference]: Without dead ends: 3437 [2025-03-16 19:57:04,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:04,842 INFO L435 NwaCegarLoop]: 4106 mSDtfsCounter, 4220 mSDsluCounter, 8146 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4231 SdHoareTripleChecker+Valid, 12252 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:04,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4231 Valid, 12252 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:57:04,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2025-03-16 19:57:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 3321. [2025-03-16 19:57:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3136 states have (on average 1.7515943877551021) internal successors, (5493), 3158 states have internal predecessors, (5493), 109 states have call successors, (109), 54 states have call predecessors, (109), 74 states have return successors, (173), 116 states have call predecessors, (173), 109 states have call successors, (173) [2025-03-16 19:57:04,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 5775 transitions. [2025-03-16 19:57:04,939 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 5775 transitions. Word has length 71 [2025-03-16 19:57:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:04,939 INFO L471 AbstractCegarLoop]: Abstraction has 3321 states and 5775 transitions. [2025-03-16 19:57:04,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 5775 transitions. [2025-03-16 19:57:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 19:57:04,941 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:04,941 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] [2025-03-16 19:57:04,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:57:04,941 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:04,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1908668775, now seen corresponding path program 1 times [2025-03-16 19:57:04,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:04,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793204105] [2025-03-16 19:57:04,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:04,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 19:57:04,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 19:57:04,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:04,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:04,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:04,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793204105] [2025-03-16 19:57:04,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793204105] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:04,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:04,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:04,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128620782] [2025-03-16 19:57:04,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:04,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:04,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:04,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:04,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:04,998 INFO L87 Difference]: Start difference. First operand 3321 states and 5775 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:05,195 INFO L93 Difference]: Finished difference Result 4570 states and 7690 transitions. [2025-03-16 19:57:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:57:05,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2025-03-16 19:57:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:05,207 INFO L225 Difference]: With dead ends: 4570 [2025-03-16 19:57:05,207 INFO L226 Difference]: Without dead ends: 3379 [2025-03-16 19:57:05,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:05,212 INFO L435 NwaCegarLoop]: 4101 mSDtfsCounter, 4216 mSDsluCounter, 8137 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4227 SdHoareTripleChecker+Valid, 12238 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:05,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4227 Valid, 12238 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:57:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2025-03-16 19:57:05,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3321. [2025-03-16 19:57:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3136 states have (on average 1.7487244897959184) internal successors, (5484), 3158 states have internal predecessors, (5484), 109 states have call successors, (109), 54 states have call predecessors, (109), 74 states have return successors, (173), 116 states have call predecessors, (173), 109 states have call successors, (173) [2025-03-16 19:57:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 5766 transitions. [2025-03-16 19:57:05,332 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 5766 transitions. Word has length 71 [2025-03-16 19:57:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:05,333 INFO L471 AbstractCegarLoop]: Abstraction has 3321 states and 5766 transitions. [2025-03-16 19:57:05,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 5766 transitions. [2025-03-16 19:57:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 19:57:05,334 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:05,334 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] [2025-03-16 19:57:05,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:57:05,335 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:05,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1617128506, now seen corresponding path program 1 times [2025-03-16 19:57:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:05,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533002008] [2025-03-16 19:57:05,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:05,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 19:57:05,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 19:57:05,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:05,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:57:05,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:05,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533002008] [2025-03-16 19:57:05,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533002008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:05,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:05,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:57:05,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480578317] [2025-03-16 19:57:05,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:05,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:57:05,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:05,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:57:05,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:57:05,391 INFO L87 Difference]: Start difference. First operand 3321 states and 5766 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:05,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:05,568 INFO L93 Difference]: Finished difference Result 5662 states and 9378 transitions. [2025-03-16 19:57:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:57:05,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2025-03-16 19:57:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:05,595 INFO L225 Difference]: With dead ends: 5662 [2025-03-16 19:57:05,595 INFO L226 Difference]: Without dead ends: 4472 [2025-03-16 19:57:05,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:57:05,601 INFO L435 NwaCegarLoop]: 4347 mSDtfsCounter, 4320 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 8631 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:05,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4320 Valid, 8631 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:57:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2025-03-16 19:57:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 4463. [2025-03-16 19:57:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 4099 states have (on average 1.678702122468895) internal successors, (6881), 4150 states have internal predecessors, (6881), 214 states have call successors, (214), 108 states have call predecessors, (214), 148 states have return successors, (335), 212 states have call predecessors, (335), 214 states have call successors, (335) [2025-03-16 19:57:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 7430 transitions. [2025-03-16 19:57:05,749 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 7430 transitions. Word has length 71 [2025-03-16 19:57:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:05,749 INFO L471 AbstractCegarLoop]: Abstraction has 4463 states and 7430 transitions. [2025-03-16 19:57:05,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 7430 transitions. [2025-03-16 19:57:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:57:05,754 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:05,754 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:05,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:57:05,755 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:05,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:05,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2121085020, now seen corresponding path program 1 times [2025-03-16 19:57:05,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:05,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009716441] [2025-03-16 19:57:05,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:05,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:05,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:57:05,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:57:05,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:05,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:57:05,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:05,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009716441] [2025-03-16 19:57:05,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009716441] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:05,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772075919] [2025-03-16 19:57:05,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:05,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:05,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:05,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:05,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 19:57:05,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:57:05,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:57:05,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:05,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:05,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:05,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 19:57:05,976 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772075919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:05,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:05,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 19:57:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050734529] [2025-03-16 19:57:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:05,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:05,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:05,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:05,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:05,977 INFO L87 Difference]: Start difference. First operand 4463 states and 7430 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:57:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:06,248 INFO L93 Difference]: Finished difference Result 9036 states and 14290 transitions. [2025-03-16 19:57:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:06,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2025-03-16 19:57:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:06,275 INFO L225 Difference]: With dead ends: 9036 [2025-03-16 19:57:06,275 INFO L226 Difference]: Without dead ends: 6704 [2025-03-16 19:57:06,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:06,286 INFO L435 NwaCegarLoop]: 4166 mSDtfsCounter, 4126 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4126 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:06,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4126 Valid, 4352 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2025-03-16 19:57:06,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 6684. [2025-03-16 19:57:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6684 states, 5980 states have (on average 1.6133779264214048) internal successors, (9648), 6080 states have internal predecessors, (9648), 406 states have call successors, (406), 216 states have call predecessors, (406), 296 states have return successors, (641), 395 states have call predecessors, (641), 406 states have call successors, (641) [2025-03-16 19:57:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6684 states to 6684 states and 10695 transitions. [2025-03-16 19:57:06,525 INFO L78 Accepts]: Start accepts. Automaton has 6684 states and 10695 transitions. Word has length 115 [2025-03-16 19:57:06,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:06,526 INFO L471 AbstractCegarLoop]: Abstraction has 6684 states and 10695 transitions. [2025-03-16 19:57:06,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:57:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6684 states and 10695 transitions. [2025-03-16 19:57:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:57:06,533 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:06,533 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:06,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:06,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:06,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:06,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 276231906, now seen corresponding path program 1 times [2025-03-16 19:57:06,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:06,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313305862] [2025-03-16 19:57:06,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:06,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:57:06,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:57:06,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:06,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:57:06,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313305862] [2025-03-16 19:57:06,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313305862] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113273067] [2025-03-16 19:57:06,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:06,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:06,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:06,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:06,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 19:57:06,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:57:06,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:57:06,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:06,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:06,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:06,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 19:57:06,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113273067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:06,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:06,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 19:57:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076829918] [2025-03-16 19:57:06,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:06,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:06,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:06,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:06,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:06,990 INFO L87 Difference]: Start difference. First operand 6684 states and 10695 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:57:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:07,270 INFO L93 Difference]: Finished difference Result 15657 states and 24105 transitions. [2025-03-16 19:57:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:07,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2025-03-16 19:57:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:07,310 INFO L225 Difference]: With dead ends: 15657 [2025-03-16 19:57:07,310 INFO L226 Difference]: Without dead ends: 11104 [2025-03-16 19:57:07,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:07,328 INFO L435 NwaCegarLoop]: 4166 mSDtfsCounter, 4121 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4121 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:07,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4121 Valid, 4352 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11104 states. [2025-03-16 19:57:07,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11104 to 11066. [2025-03-16 19:57:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11066 states, 9684 states have (on average 1.5561751342420487) internal successors, (15070), 9882 states have internal predecessors, (15070), 788 states have call successors, (788), 432 states have call predecessors, (788), 592 states have return successors, (1251), 759 states have call predecessors, (1251), 788 states have call successors, (1251) [2025-03-16 19:57:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11066 states to 11066 states and 17109 transitions. [2025-03-16 19:57:07,750 INFO L78 Accepts]: Start accepts. Automaton has 11066 states and 17109 transitions. Word has length 115 [2025-03-16 19:57:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:07,751 INFO L471 AbstractCegarLoop]: Abstraction has 11066 states and 17109 transitions. [2025-03-16 19:57:07,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:57:07,751 INFO L276 IsEmpty]: Start isEmpty. Operand 11066 states and 17109 transitions. [2025-03-16 19:57:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:57:07,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:07,761 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:07,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:07,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 19:57:07,963 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:07,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:07,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1767945372, now seen corresponding path program 1 times [2025-03-16 19:57:07,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:07,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417159974] [2025-03-16 19:57:07,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:07,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:57:07,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:57:07,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:07,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:57:08,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:08,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417159974] [2025-03-16 19:57:08,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417159974] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:08,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012483391] [2025-03-16 19:57:08,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:08,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:08,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:08,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:08,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 19:57:08,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:57:08,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:57:08,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:08,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:08,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:08,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-16 19:57:08,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:08,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012483391] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:08,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:08,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 19:57:08,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667800018] [2025-03-16 19:57:08,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:08,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:08,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:08,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:08,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:08,146 INFO L87 Difference]: Start difference. First operand 11066 states and 17109 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:57:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:08,708 INFO L93 Difference]: Finished difference Result 28575 states and 43145 transitions. [2025-03-16 19:57:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:08,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2025-03-16 19:57:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:08,776 INFO L225 Difference]: With dead ends: 28575 [2025-03-16 19:57:08,776 INFO L226 Difference]: Without dead ends: 19640 [2025-03-16 19:57:08,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:08,807 INFO L435 NwaCegarLoop]: 4166 mSDtfsCounter, 4131 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:08,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 4352 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19640 states. [2025-03-16 19:57:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19640 to 19566. [2025-03-16 19:57:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19566 states, 16880 states have (on average 1.5162322274881517) internal successors, (25594), 17274 states have internal predecessors, (25594), 1500 states have call successors, (1500), 864 states have call predecessors, (1500), 1184 states have return successors, (2419), 1435 states have call predecessors, (2419), 1500 states have call successors, (2419) [2025-03-16 19:57:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19566 states to 19566 states and 29513 transitions. [2025-03-16 19:57:09,484 INFO L78 Accepts]: Start accepts. Automaton has 19566 states and 29513 transitions. Word has length 115 [2025-03-16 19:57:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:09,484 INFO L471 AbstractCegarLoop]: Abstraction has 19566 states and 29513 transitions. [2025-03-16 19:57:09,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:57:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 19566 states and 29513 transitions. [2025-03-16 19:57:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 19:57:09,499 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:09,500 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:09,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:09,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:09,706 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:09,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2032931286, now seen corresponding path program 1 times [2025-03-16 19:57:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805407303] [2025-03-16 19:57:09,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:09,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:57:09,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:57:09,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:09,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:57:09,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:09,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805407303] [2025-03-16 19:57:09,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805407303] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:09,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324023958] [2025-03-16 19:57:09,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:09,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:09,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:09,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:09,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 19:57:09,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 19:57:09,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 19:57:09,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:09,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:09,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:09,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 19:57:09,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324023958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:09,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967129573] [2025-03-16 19:57:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:09,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:09,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:09,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:09,986 INFO L87 Difference]: Start difference. First operand 19566 states and 29513 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:57:11,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:11,103 INFO L93 Difference]: Finished difference Result 53425 states and 80111 transitions. [2025-03-16 19:57:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:11,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2025-03-16 19:57:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:11,236 INFO L225 Difference]: With dead ends: 53425 [2025-03-16 19:57:11,237 INFO L226 Difference]: Without dead ends: 35991 [2025-03-16 19:57:11,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:11,283 INFO L435 NwaCegarLoop]: 4354 mSDtfsCounter, 184 mSDsluCounter, 4165 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 8519 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:11,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 8519 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35991 states. [2025-03-16 19:57:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35991 to 35991. [2025-03-16 19:57:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35991 states, 30818 states have (on average 1.4894866636381336) internal successors, (45903), 31533 states have internal predecessors, (45903), 2829 states have call successors, (2829), 1702 states have call predecessors, (2829), 2342 states have return successors, (5130), 2771 states have call predecessors, (5130), 2829 states have call successors, (5130) [2025-03-16 19:57:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35991 states to 35991 states and 53862 transitions. [2025-03-16 19:57:12,890 INFO L78 Accepts]: Start accepts. Automaton has 35991 states and 53862 transitions. Word has length 115 [2025-03-16 19:57:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:12,891 INFO L471 AbstractCegarLoop]: Abstraction has 35991 states and 53862 transitions. [2025-03-16 19:57:12,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 19:57:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 35991 states and 53862 transitions. [2025-03-16 19:57:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-16 19:57:12,971 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:12,971 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:12,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:13,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:13,176 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:13,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 222330261, now seen corresponding path program 1 times [2025-03-16 19:57:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:13,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220112425] [2025-03-16 19:57:13,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:13,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:13,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 19:57:13,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 19:57:13,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:13,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-16 19:57:13,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:13,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220112425] [2025-03-16 19:57:13,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220112425] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:13,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913123272] [2025-03-16 19:57:13,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:13,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:13,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:13,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:13,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 19:57:13,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 19:57:13,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 19:57:13,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:13,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:13,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:13,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 19:57:13,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:13,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913123272] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:13,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:13,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:13,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905249585] [2025-03-16 19:57:13,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:13,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:13,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:13,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:13,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:13,450 INFO L87 Difference]: Start difference. First operand 35991 states and 53862 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 19:57:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:14,382 INFO L93 Difference]: Finished difference Result 58683 states and 87865 transitions. [2025-03-16 19:57:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 166 [2025-03-16 19:57:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:14,515 INFO L225 Difference]: With dead ends: 58683 [2025-03-16 19:57:14,516 INFO L226 Difference]: Without dead ends: 31719 [2025-03-16 19:57:14,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:14,583 INFO L435 NwaCegarLoop]: 4163 mSDtfsCounter, 4100 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 4203 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:14,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4100 Valid, 4203 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31719 states. [2025-03-16 19:57:15,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31719 to 24287. [2025-03-16 19:57:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24287 states, 21050 states have (on average 1.456104513064133) internal successors, (30651), 21289 states have internal predecessors, (30651), 1849 states have call successors, (1849), 1194 states have call predecessors, (1849), 1386 states have return successors, (2610), 1811 states have call predecessors, (2610), 1849 states have call successors, (2610) [2025-03-16 19:57:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24287 states to 24287 states and 35110 transitions. [2025-03-16 19:57:15,625 INFO L78 Accepts]: Start accepts. Automaton has 24287 states and 35110 transitions. Word has length 166 [2025-03-16 19:57:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:15,625 INFO L471 AbstractCegarLoop]: Abstraction has 24287 states and 35110 transitions. [2025-03-16 19:57:15,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 19:57:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 24287 states and 35110 transitions. [2025-03-16 19:57:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-16 19:57:15,651 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:15,651 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:15,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:15,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 19:57:15,855 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:15,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1820960332, now seen corresponding path program 1 times [2025-03-16 19:57:15,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:15,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292751731] [2025-03-16 19:57:15,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:15,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 19:57:15,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 19:57:15,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:15,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-16 19:57:15,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:15,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292751731] [2025-03-16 19:57:15,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292751731] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:15,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102577989] [2025-03-16 19:57:15,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:15,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:15,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:15,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 19:57:15,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 19:57:16,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 19:57:16,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:16,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:16,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:16,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 19:57:16,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:16,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102577989] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:16,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:16,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:16,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034002385] [2025-03-16 19:57:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:16,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:16,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:16,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:16,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:16,203 INFO L87 Difference]: Start difference. First operand 24287 states and 35110 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 19:57:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:17,569 INFO L93 Difference]: Finished difference Result 48785 states and 70367 transitions. [2025-03-16 19:57:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:17,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 166 [2025-03-16 19:57:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:17,667 INFO L225 Difference]: With dead ends: 48785 [2025-03-16 19:57:17,667 INFO L226 Difference]: Without dead ends: 26637 [2025-03-16 19:57:17,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:17,722 INFO L435 NwaCegarLoop]: 4161 mSDtfsCounter, 4116 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4116 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:17,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4116 Valid, 4200 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26637 states. [2025-03-16 19:57:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26637 to 26637. [2025-03-16 19:57:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26637 states, 23180 states have (on average 1.4186798964624676) internal successors, (32885), 23419 states have internal predecessors, (32885), 1915 states have call successors, (1915), 1348 states have call predecessors, (1915), 1540 states have return successors, (2698), 1877 states have call predecessors, (2698), 1915 states have call successors, (2698) [2025-03-16 19:57:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26637 states to 26637 states and 37498 transitions. [2025-03-16 19:57:19,293 INFO L78 Accepts]: Start accepts. Automaton has 26637 states and 37498 transitions. Word has length 166 [2025-03-16 19:57:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:19,293 INFO L471 AbstractCegarLoop]: Abstraction has 26637 states and 37498 transitions. [2025-03-16 19:57:19,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 19:57:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 26637 states and 37498 transitions. [2025-03-16 19:57:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-16 19:57:19,328 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:19,328 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:19,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 19:57:19,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:19,529 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:19,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1606112111, now seen corresponding path program 1 times [2025-03-16 19:57:19,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:19,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023241158] [2025-03-16 19:57:19,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:19,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 19:57:19,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 19:57:19,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:19,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-16 19:57:19,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:19,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023241158] [2025-03-16 19:57:19,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023241158] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:19,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035605010] [2025-03-16 19:57:19,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:19,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:19,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:19,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:19,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 19:57:19,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 19:57:19,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 19:57:19,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:19,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:19,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 19:57:19,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-16 19:57:19,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:19,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035605010] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:19,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:19,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:19,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115363094] [2025-03-16 19:57:19,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:19,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:19,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:19,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:19,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:19,794 INFO L87 Difference]: Start difference. First operand 26637 states and 37498 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 19:57:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:20,701 INFO L93 Difference]: Finished difference Result 47360 states and 65604 transitions. [2025-03-16 19:57:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:20,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 166 [2025-03-16 19:57:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:20,815 INFO L225 Difference]: With dead ends: 47360 [2025-03-16 19:57:20,815 INFO L226 Difference]: Without dead ends: 28745 [2025-03-16 19:57:20,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:20,861 INFO L435 NwaCegarLoop]: 4219 mSDtfsCounter, 4106 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4106 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:20,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4106 Valid, 4412 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28745 states. [2025-03-16 19:57:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28745 to 28613. [2025-03-16 19:57:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28613 states, 24980 states have (on average 1.393634907926341) internal successors, (34813), 25219 states have internal predecessors, (34813), 1959 states have call successors, (1959), 1480 states have call predecessors, (1959), 1672 states have return successors, (2874), 1921 states have call predecessors, (2874), 1959 states have call successors, (2874) [2025-03-16 19:57:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28613 states to 28613 states and 39646 transitions. [2025-03-16 19:57:22,114 INFO L78 Accepts]: Start accepts. Automaton has 28613 states and 39646 transitions. Word has length 166 [2025-03-16 19:57:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:22,114 INFO L471 AbstractCegarLoop]: Abstraction has 28613 states and 39646 transitions. [2025-03-16 19:57:22,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 19:57:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 28613 states and 39646 transitions. [2025-03-16 19:57:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-16 19:57:22,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:22,142 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:22,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:22,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:22,403 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:22,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1302436547, now seen corresponding path program 1 times [2025-03-16 19:57:22,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:22,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334342739] [2025-03-16 19:57:22,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:22,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:22,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 19:57:22,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 19:57:22,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:22,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-03-16 19:57:22,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334342739] [2025-03-16 19:57:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334342739] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303290205] [2025-03-16 19:57:22,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:22,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:22,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:22,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:22,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 19:57:22,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 19:57:22,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 19:57:22,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:22,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:22,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:22,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 19:57:22,716 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:22,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303290205] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:22,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:22,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:22,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225593089] [2025-03-16 19:57:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:22,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:22,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:22,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:22,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:22,718 INFO L87 Difference]: Start difference. First operand 28613 states and 39646 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:24,487 INFO L93 Difference]: Finished difference Result 78377 states and 108092 transitions. [2025-03-16 19:57:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:24,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 167 [2025-03-16 19:57:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:24,650 INFO L225 Difference]: With dead ends: 78377 [2025-03-16 19:57:24,651 INFO L226 Difference]: Without dead ends: 51903 [2025-03-16 19:57:24,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:24,713 INFO L435 NwaCegarLoop]: 4343 mSDtfsCounter, 166 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 8500 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:24,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 8500 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51903 states. [2025-03-16 19:57:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51903 to 51901. [2025-03-16 19:57:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51901 states, 44958 states have (on average 1.3679211708705903) internal successors, (61499), 45435 states have internal predecessors, (61499), 3757 states have call successors, (3757), 2800 states have call predecessors, (3757), 3184 states have return successors, (6658), 3681 states have call predecessors, (6658), 3757 states have call successors, (6658) [2025-03-16 19:57:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51901 states to 51901 states and 71914 transitions. [2025-03-16 19:57:26,777 INFO L78 Accepts]: Start accepts. Automaton has 51901 states and 71914 transitions. Word has length 167 [2025-03-16 19:57:26,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:26,777 INFO L471 AbstractCegarLoop]: Abstraction has 51901 states and 71914 transitions. [2025-03-16 19:57:26,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 51901 states and 71914 transitions. [2025-03-16 19:57:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-16 19:57:26,847 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:26,847 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:26,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 19:57:27,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 19:57:27,048 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:27,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:27,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1406015388, now seen corresponding path program 1 times [2025-03-16 19:57:27,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:27,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342913120] [2025-03-16 19:57:27,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:27,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:27,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 19:57:27,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 19:57:27,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:27,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-16 19:57:27,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342913120] [2025-03-16 19:57:27,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342913120] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:27,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332857735] [2025-03-16 19:57:27,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:27,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:27,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:27,109 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:27,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 19:57:27,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 19:57:27,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 19:57:27,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:27,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:27,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:27,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 19:57:27,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332857735] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:27,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241439358] [2025-03-16 19:57:27,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:27,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:27,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:27,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:27,255 INFO L87 Difference]: Start difference. First operand 51901 states and 71914 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:28,995 INFO L93 Difference]: Finished difference Result 105079 states and 146903 transitions. [2025-03-16 19:57:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 168 [2025-03-16 19:57:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:29,170 INFO L225 Difference]: With dead ends: 105079 [2025-03-16 19:57:29,170 INFO L226 Difference]: Without dead ends: 55325 [2025-03-16 19:57:29,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:29,264 INFO L435 NwaCegarLoop]: 4169 mSDtfsCounter, 4124 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4124 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:29,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4124 Valid, 4207 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55325 states. [2025-03-16 19:57:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55325 to 51901. [2025-03-16 19:57:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51901 states, 44958 states have (on average 1.3419413674985543) internal successors, (60331), 45435 states have internal predecessors, (60331), 3757 states have call successors, (3757), 2800 states have call predecessors, (3757), 3184 states have return successors, (6262), 3681 states have call predecessors, (6262), 3757 states have call successors, (6262) [2025-03-16 19:57:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51901 states to 51901 states and 70350 transitions. [2025-03-16 19:57:31,808 INFO L78 Accepts]: Start accepts. Automaton has 51901 states and 70350 transitions. Word has length 168 [2025-03-16 19:57:31,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:31,809 INFO L471 AbstractCegarLoop]: Abstraction has 51901 states and 70350 transitions. [2025-03-16 19:57:31,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:31,809 INFO L276 IsEmpty]: Start isEmpty. Operand 51901 states and 70350 transitions. [2025-03-16 19:57:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-16 19:57:31,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:31,857 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:31,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-16 19:57:32,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 19:57:32,058 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:32,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash 853739394, now seen corresponding path program 1 times [2025-03-16 19:57:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13947063] [2025-03-16 19:57:32,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:32,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 19:57:32,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 19:57:32,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:32,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-16 19:57:32,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13947063] [2025-03-16 19:57:32,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13947063] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:57:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69587943] [2025-03-16 19:57:32,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:32,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:57:32,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:32,116 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:57:32,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 19:57:32,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 19:57:32,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 19:57:32,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:32,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:32,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:57:32,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:57:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-16 19:57:32,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:57:32,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69587943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:32,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:57:32,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 19:57:32,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470598331] [2025-03-16 19:57:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:32,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:57:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:32,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:57:32,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:32,249 INFO L87 Difference]: Start difference. First operand 51901 states and 70350 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 19:57:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:36,022 INFO L93 Difference]: Finished difference Result 148789 states and 201958 transitions. [2025-03-16 19:57:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:57:36,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 168 [2025-03-16 19:57:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:36,346 INFO L225 Difference]: With dead ends: 148789 [2025-03-16 19:57:36,346 INFO L226 Difference]: Without dead ends: 99035 [2025-03-16 19:57:36,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:36,442 INFO L435 NwaCegarLoop]: 4342 mSDtfsCounter, 176 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 8497 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:36,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 8497 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:57:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99035 states.