./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i -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 bb431c15a53fac0c4e22be07227ce83ff2546829e87bec0102c153438eba00d8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 16:53:28,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 16:53:28,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 16:53:28,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 16:53:28,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 16:53:28,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 16:53:28,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 16:53:28,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 16:53:28,453 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 16:53:28,453 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 16:53:28,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 16:53:28,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 16:53:28,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 16:53:28,454 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 16:53:28,454 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 16:53:28,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 16:53:28,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 16:53:28,456 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 16:53:28,456 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 16:53:28,456 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 16:53:28,456 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 16:53:28,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 16:53:28,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 16:53:28,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:53:28,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 16:53:28,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 16:53:28,457 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 16:53:28,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 16:53:28,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 16:53:28,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 16:53:28,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 16:53:28,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 16:53:28,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 16:53:28,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 16:53:28,457 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 -> bb431c15a53fac0c4e22be07227ce83ff2546829e87bec0102c153438eba00d8 [2025-03-08 16:53:28,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 16:53:28,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 16:53:28,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 16:53:28,706 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 16:53:28,707 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 16:53:28,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i [2025-03-08 16:53:29,902 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e14cc63a/c8aac331ab074d52bc837b18d4621d43/FLAGef9dd8120 [2025-03-08 16:53:30,135 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 16:53:30,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i [2025-03-08 16:53:30,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e14cc63a/c8aac331ab074d52bc837b18d4621d43/FLAGef9dd8120 [2025-03-08 16:53:30,476 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e14cc63a/c8aac331ab074d52bc837b18d4621d43 [2025-03-08 16:53:30,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 16:53:30,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 16:53:30,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 16:53:30,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 16:53:30,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 16:53:30,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465d24fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30, skipping insertion in model container [2025-03-08 16:53:30,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,499 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 16:53:30,602 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/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i[916,929] [2025-03-08 16:53:30,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:53:30,646 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 16:53:30,653 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/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i[916,929] [2025-03-08 16:53:30,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:53:30,690 INFO L204 MainTranslator]: Completed translation [2025-03-08 16:53:30,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30 WrapperNode [2025-03-08 16:53:30,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 16:53:30,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 16:53:30,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 16:53:30,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 16:53:30,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,736 INFO L138 Inliner]: procedures = 27, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 320 [2025-03-08 16:53:30,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 16:53:30,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 16:53:30,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 16:53:30,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 16:53:30,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,760 INFO L175 MemorySlicer]: Split 88 memory accesses to 2 slices as follows [2, 86]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 25 writes are split as follows [0, 25]. [2025-03-08 16:53:30,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,772 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 16:53:30,782 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 16:53:30,785 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 16:53:30,785 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 16:53:30,786 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (1/1) ... [2025-03-08 16:53:30,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:53:30,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:30,810 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) [2025-03-08 16:53:30,814 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 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 16:53:30,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 16:53:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 16:53:30,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 16:53:30,902 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 16:53:30,904 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 16:53:31,188 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L104: havoc property_#t~mem40#1;havoc property_#t~mem41#1;havoc property_#t~ite48#1;havoc property_#t~mem42#1;havoc property_#t~mem47#1;havoc property_#t~mem43#1;havoc property_#t~ite46#1;havoc property_#t~mem44#1;havoc property_#t~mem45#1;havoc property_#t~short49#1;havoc property_#t~mem50#1;havoc property_#t~mem51#1;havoc property_#t~ite59#1;havoc property_#t~mem52#1;havoc property_#t~ite58#1;havoc property_#t~mem53#1;havoc property_#t~mem54#1;havoc property_#t~ite57#1;havoc property_#t~mem56#1;havoc property_#t~mem55#1;havoc property_#t~short60#1;havoc property_#t~mem61#1;havoc property_#t~ite75#1;havoc property_#t~mem62#1;havoc property_#t~ite71#1;havoc property_#t~mem65#1;havoc property_#t~mem63#1;havoc property_#t~mem64#1;havoc property_#t~mem66#1;havoc property_#t~ite70#1;havoc property_#t~mem67#1;havoc property_#t~mem69#1;havoc property_#t~mem68#1;havoc property_#t~mem74#1;havoc property_#t~mem72#1;havoc property_#t~mem73#1;havoc property_#t~short76#1;havoc property_#t~mem78#1;havoc property_#t~mem77#1;havoc property_#t~short79#1;havoc property_#t~mem81#1;havoc property_#t~mem80#1;havoc property_#t~short82#1; [2025-03-08 16:53:31,222 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2025-03-08 16:53:31,222 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 16:53:31,235 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 16:53:31,236 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 16:53:31,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:53:31 BoogieIcfgContainer [2025-03-08 16:53:31,236 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 16:53:31,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 16:53:31,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 16:53:31,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 16:53:31,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:53:30" (1/3) ... [2025-03-08 16:53:31,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5052ec2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:53:31, skipping insertion in model container [2025-03-08 16:53:31,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:53:30" (2/3) ... [2025-03-08 16:53:31,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5052ec2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:53:31, skipping insertion in model container [2025-03-08 16:53:31,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:53:31" (3/3) ... [2025-03-08 16:53:31,246 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-62.i [2025-03-08 16:53:31,257 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 16:53:31,258 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-62.i that has 2 procedures, 72 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 16:53:31,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 16:53:31,307 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;@252555e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 16:53:31,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 16:53:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 62 states have internal predecessors, (86), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-08 16:53:31,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:31,319 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:31,319 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:31,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:31,323 INFO L85 PathProgramCache]: Analyzing trace with hash -805406177, now seen corresponding path program 1 times [2025-03-08 16:53:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:31,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908824595] [2025-03-08 16:53:31,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:31,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 16:53:31,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 16:53:31,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:31,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-08 16:53:31,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908824595] [2025-03-08 16:53:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908824595] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:31,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048626121] [2025-03-08 16:53:31,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:31,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:31,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:31,523 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) [2025-03-08 16:53:31,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 16:53:31,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 16:53:31,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 16:53:31,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:31,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:31,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 16:53:31,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:53:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-08 16:53:31,679 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:53:31,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048626121] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:31,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:53:31,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 16:53:31,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138079749] [2025-03-08 16:53:31,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:31,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 16:53:31,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:31,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 16:53:31,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:53:31,698 INFO L87 Difference]: Start difference. First operand has 72 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 62 states have internal predecessors, (86), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:31,712 INFO L93 Difference]: Finished difference Result 138 states and 207 transitions. [2025-03-08 16:53:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 16:53:31,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2025-03-08 16:53:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:31,717 INFO L225 Difference]: With dead ends: 138 [2025-03-08 16:53:31,718 INFO L226 Difference]: Without dead ends: 69 [2025-03-08 16:53:31,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:53:31,721 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:31,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:53:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-08 16:53:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-03-08 16:53:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 59 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2025-03-08 16:53:31,750 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 73 [2025-03-08 16:53:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:31,750 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2025-03-08 16:53:31,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2025-03-08 16:53:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-08 16:53:31,752 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:31,752 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:31,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 16:53:31,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 16:53:31,953 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:31,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash 208311831, now seen corresponding path program 1 times [2025-03-08 16:53:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200703274] [2025-03-08 16:53:31,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:31,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 16:53:32,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 16:53:32,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:32,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:32,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:32,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200703274] [2025-03-08 16:53:32,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200703274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:32,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:32,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 16:53:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553049326] [2025-03-08 16:53:32,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:32,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:53:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:32,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:53:32,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 16:53:32,177 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:32,215 INFO L93 Difference]: Finished difference Result 138 states and 195 transitions. [2025-03-08 16:53:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:53:32,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2025-03-08 16:53:32,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:32,217 INFO L225 Difference]: With dead ends: 138 [2025-03-08 16:53:32,218 INFO L226 Difference]: Without dead ends: 72 [2025-03-08 16:53:32,219 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 [2025-03-08 16:53:32,220 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:32,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 271 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:53:32,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-03-08 16:53:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2025-03-08 16:53:32,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2025-03-08 16:53:32,230 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 73 [2025-03-08 16:53:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:32,231 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2025-03-08 16:53:32,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2025-03-08 16:53:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-08 16:53:32,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:32,232 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:32,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 16:53:32,232 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:32,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:32,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1095815512, now seen corresponding path program 1 times [2025-03-08 16:53:32,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:32,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866258689] [2025-03-08 16:53:32,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:32,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 16:53:32,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 16:53:32,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:32,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:32,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866258689] [2025-03-08 16:53:32,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866258689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:32,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:32,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 16:53:32,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91723528] [2025-03-08 16:53:32,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:32,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:53:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:32,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:53:32,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 16:53:32,354 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:32,385 INFO L93 Difference]: Finished difference Result 142 states and 199 transitions. [2025-03-08 16:53:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:53:32,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2025-03-08 16:53:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:32,387 INFO L225 Difference]: With dead ends: 142 [2025-03-08 16:53:32,387 INFO L226 Difference]: Without dead ends: 74 [2025-03-08 16:53:32,387 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 [2025-03-08 16:53:32,387 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:32,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 274 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:53:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-08 16:53:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2025-03-08 16:53:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 63 states have internal predecessors, (85), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2025-03-08 16:53:32,397 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 73 [2025-03-08 16:53:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:32,398 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2025-03-08 16:53:32,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2025-03-08 16:53:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-08 16:53:32,399 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:32,400 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:32,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 16:53:32,400 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:32,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:32,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1096739033, now seen corresponding path program 1 times [2025-03-08 16:53:32,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:32,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114914735] [2025-03-08 16:53:32,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:32,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:32,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 16:53:32,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 16:53:32,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:32,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:32,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:32,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114914735] [2025-03-08 16:53:32,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114914735] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:32,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:32,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 16:53:32,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523299884] [2025-03-08 16:53:32,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:32,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:53:32,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:32,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:53:32,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 16:53:32,708 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:32,840 INFO L93 Difference]: Finished difference Result 170 states and 236 transitions. [2025-03-08 16:53:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:53:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2025-03-08 16:53:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:32,843 INFO L225 Difference]: With dead ends: 170 [2025-03-08 16:53:32,844 INFO L226 Difference]: Without dead ends: 100 [2025-03-08 16:53:32,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:53:32,845 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 79 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:32,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 194 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:32,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-08 16:53:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 73. [2025-03-08 16:53:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2025-03-08 16:53:32,854 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 73 [2025-03-08 16:53:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:32,856 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2025-03-08 16:53:32,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2025-03-08 16:53:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-08 16:53:32,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:32,857 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:32,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 16:53:32,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:32,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1168013655, now seen corresponding path program 1 times [2025-03-08 16:53:32,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:32,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383121469] [2025-03-08 16:53:32,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:32,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:32,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-08 16:53:32,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-08 16:53:32,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:32,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:33,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:33,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383121469] [2025-03-08 16:53:33,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383121469] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:33,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:33,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 16:53:33,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751123229] [2025-03-08 16:53:33,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:33,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 16:53:33,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:33,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 16:53:33,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:53:33,153 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:33,407 INFO L93 Difference]: Finished difference Result 216 states and 298 transitions. [2025-03-08 16:53:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:53:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2025-03-08 16:53:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:33,409 INFO L225 Difference]: With dead ends: 216 [2025-03-08 16:53:33,409 INFO L226 Difference]: Without dead ends: 146 [2025-03-08 16:53:33,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:53:33,410 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 80 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:33,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 667 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 16:53:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-08 16:53:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 83. [2025-03-08 16:53:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2025-03-08 16:53:33,419 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 75 [2025-03-08 16:53:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:33,419 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2025-03-08 16:53:33,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2025-03-08 16:53:33,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 16:53:33,420 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:33,420 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:33,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 16:53:33,420 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:33,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:33,421 INFO L85 PathProgramCache]: Analyzing trace with hash 130993268, now seen corresponding path program 1 times [2025-03-08 16:53:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795316972] [2025-03-08 16:53:33,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:33,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 16:53:33,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 16:53:33,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:33,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:34,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:34,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795316972] [2025-03-08 16:53:34,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795316972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:34,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:34,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 16:53:34,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529596206] [2025-03-08 16:53:34,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:34,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 16:53:34,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:34,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 16:53:34,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:34,104 INFO L87 Difference]: Start difference. First operand 83 states and 114 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:34,271 INFO L93 Difference]: Finished difference Result 193 states and 264 transitions. [2025-03-08 16:53:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:53:34,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2025-03-08 16:53:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:34,272 INFO L225 Difference]: With dead ends: 193 [2025-03-08 16:53:34,273 INFO L226 Difference]: Without dead ends: 113 [2025-03-08 16:53:34,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:53:34,274 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 45 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:34,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 281 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-08 16:53:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2025-03-08 16:53:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 73 states have internal predecessors, (97), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 113 transitions. [2025-03-08 16:53:34,282 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 113 transitions. Word has length 77 [2025-03-08 16:53:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:34,283 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 113 transitions. [2025-03-08 16:53:34,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 113 transitions. [2025-03-08 16:53:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 16:53:34,283 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:34,283 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:34,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 16:53:34,284 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:34,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash 449755694, now seen corresponding path program 1 times [2025-03-08 16:53:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:34,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897113026] [2025-03-08 16:53:34,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:34,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 16:53:34,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 16:53:34,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:34,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897113026] [2025-03-08 16:53:34,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897113026] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387613391] [2025-03-08 16:53:34,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:34,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:34,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:34,415 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) [2025-03-08 16:53:34,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 16:53:34,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 16:53:34,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 16:53:34,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:34,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:34,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 16:53:34,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:53:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:34,530 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:53:34,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387613391] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:34,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:53:34,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-08 16:53:34,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34985196] [2025-03-08 16:53:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:34,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:53:34,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:34,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:53:34,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:53:34,532 INFO L87 Difference]: Start difference. First operand 83 states and 113 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:34,552 INFO L93 Difference]: Finished difference Result 166 states and 227 transitions. [2025-03-08 16:53:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:53:34,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2025-03-08 16:53:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:34,553 INFO L225 Difference]: With dead ends: 166 [2025-03-08 16:53:34,553 INFO L226 Difference]: Without dead ends: 86 [2025-03-08 16:53:34,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:53:34,554 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:34,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:53:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-03-08 16:53:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2025-03-08 16:53:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 76 states have internal predecessors, (100), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2025-03-08 16:53:34,557 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 77 [2025-03-08 16:53:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:34,558 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2025-03-08 16:53:34,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2025-03-08 16:53:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 16:53:34,560 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:34,560 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:34,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 16:53:34,765 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,SelfDestructingSolverStorable6 [2025-03-08 16:53:34,765 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:34,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash 265123962, now seen corresponding path program 1 times [2025-03-08 16:53:34,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:34,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917357194] [2025-03-08 16:53:34,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:34,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:34,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 16:53:34,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 16:53:34,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:34,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917357194] [2025-03-08 16:53:35,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917357194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:35,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:35,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 16:53:35,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347642360] [2025-03-08 16:53:35,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:35,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 16:53:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:35,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 16:53:35,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:35,233 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:35,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:35,372 INFO L93 Difference]: Finished difference Result 202 states and 271 transitions. [2025-03-08 16:53:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:53:35,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2025-03-08 16:53:35,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:35,373 INFO L225 Difference]: With dead ends: 202 [2025-03-08 16:53:35,373 INFO L226 Difference]: Without dead ends: 119 [2025-03-08 16:53:35,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:53:35,374 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 96 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:35,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 339 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:35,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-03-08 16:53:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2025-03-08 16:53:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 76 states have internal predecessors, (99), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2025-03-08 16:53:35,377 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 77 [2025-03-08 16:53:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:35,378 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2025-03-08 16:53:35,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2025-03-08 16:53:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 16:53:35,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:35,379 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:35,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 16:53:35,380 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:35,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -758251628, now seen corresponding path program 1 times [2025-03-08 16:53:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925095375] [2025-03-08 16:53:35,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:35,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:35,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:35,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:35,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:35,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925095375] [2025-03-08 16:53:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925095375] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453160647] [2025-03-08 16:53:35,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:35,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:35,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:35,479 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) [2025-03-08 16:53:35,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 16:53:35,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:35,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:35,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:35,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:35,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 16:53:35,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:53:35,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:35,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2025-03-08 16:53:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:35,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:53:35,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453160647] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:35,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:53:35,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2025-03-08 16:53:35,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911091035] [2025-03-08 16:53:35,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:35,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:53:35,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:35,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:53:35,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:53:35,728 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:35,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:35,903 INFO L93 Difference]: Finished difference Result 219 states and 287 transitions. [2025-03-08 16:53:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:53:35,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2025-03-08 16:53:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:35,908 INFO L225 Difference]: With dead ends: 219 [2025-03-08 16:53:35,908 INFO L226 Difference]: Without dead ends: 136 [2025-03-08 16:53:35,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:53:35,909 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 41 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:35,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 265 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-08 16:53:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2025-03-08 16:53:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 121 states have internal predecessors, (152), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-08 16:53:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 172 transitions. [2025-03-08 16:53:35,914 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 172 transitions. Word has length 79 [2025-03-08 16:53:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:35,914 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 172 transitions. [2025-03-08 16:53:35,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 172 transitions. [2025-03-08 16:53:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 16:53:35,915 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:35,915 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:35,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 16:53:36,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:36,116 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:36,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1930117891, now seen corresponding path program 1 times [2025-03-08 16:53:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:36,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596679625] [2025-03-08 16:53:36,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:36,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:36,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:36,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:36,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:36,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:36,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596679625] [2025-03-08 16:53:36,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596679625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:36,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:36,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 16:53:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833956453] [2025-03-08 16:53:36,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:36,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 16:53:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:36,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 16:53:36,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:36,774 INFO L87 Difference]: Start difference. First operand 133 states and 172 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:36,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:36,941 INFO L93 Difference]: Finished difference Result 167 states and 217 transitions. [2025-03-08 16:53:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:53:36,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2025-03-08 16:53:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:36,947 INFO L225 Difference]: With dead ends: 167 [2025-03-08 16:53:36,947 INFO L226 Difference]: Without dead ends: 165 [2025-03-08 16:53:36,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:53:36,948 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 67 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:36,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 358 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-03-08 16:53:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 139. [2025-03-08 16:53:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 126 states have (on average 1.253968253968254) internal successors, (158), 127 states have internal predecessors, (158), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-08 16:53:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 178 transitions. [2025-03-08 16:53:36,962 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 178 transitions. Word has length 79 [2025-03-08 16:53:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:36,963 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 178 transitions. [2025-03-08 16:53:36,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 178 transitions. [2025-03-08 16:53:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 16:53:36,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:36,964 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:36,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 16:53:36,964 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:36,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1931041412, now seen corresponding path program 1 times [2025-03-08 16:53:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:36,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102846148] [2025-03-08 16:53:36,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:36,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:36,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:36,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:36,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102846148] [2025-03-08 16:53:37,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102846148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:37,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:37,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:53:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356059917] [2025-03-08 16:53:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:37,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:53:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:37,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:53:37,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:53:37,083 INFO L87 Difference]: Start difference. First operand 139 states and 178 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:37,176 INFO L93 Difference]: Finished difference Result 293 states and 376 transitions. [2025-03-08 16:53:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:53:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2025-03-08 16:53:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:37,178 INFO L225 Difference]: With dead ends: 293 [2025-03-08 16:53:37,178 INFO L226 Difference]: Without dead ends: 157 [2025-03-08 16:53:37,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:53:37,179 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 55 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:37,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 279 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-03-08 16:53:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2025-03-08 16:53:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 138 states have internal predecessors, (166), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 16:53:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 198 transitions. [2025-03-08 16:53:37,185 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 198 transitions. Word has length 79 [2025-03-08 16:53:37,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:37,186 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 198 transitions. [2025-03-08 16:53:37,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 198 transitions. [2025-03-08 16:53:37,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 16:53:37,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:37,186 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:37,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 16:53:37,187 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:37,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1476422203, now seen corresponding path program 1 times [2025-03-08 16:53:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:37,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758906903] [2025-03-08 16:53:37,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:37,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:37,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:37,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:37,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:37,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:37,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:37,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758906903] [2025-03-08 16:53:37,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758906903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:37,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:37,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 16:53:37,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482709028] [2025-03-08 16:53:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:37,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 16:53:37,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:37,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 16:53:37,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:53:37,848 INFO L87 Difference]: Start difference. First operand 156 states and 198 transitions. Second operand has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 16:53:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:38,155 INFO L93 Difference]: Finished difference Result 405 states and 511 transitions. [2025-03-08 16:53:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:53:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2025-03-08 16:53:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:38,157 INFO L225 Difference]: With dead ends: 405 [2025-03-08 16:53:38,157 INFO L226 Difference]: Without dead ends: 265 [2025-03-08 16:53:38,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-08 16:53:38,158 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 44 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:38,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 554 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 16:53:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2025-03-08 16:53:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 221. [2025-03-08 16:53:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 201 states have (on average 1.243781094527363) internal successors, (250), 203 states have internal predecessors, (250), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 16:53:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 282 transitions. [2025-03-08 16:53:38,167 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 282 transitions. Word has length 79 [2025-03-08 16:53:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:38,167 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 282 transitions. [2025-03-08 16:53:38,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 16:53:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 282 transitions. [2025-03-08 16:53:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 16:53:38,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:38,169 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:38,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 16:53:38,170 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:38,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash 37392087, now seen corresponding path program 1 times [2025-03-08 16:53:38,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:38,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558972845] [2025-03-08 16:53:38,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:38,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:38,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:38,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:38,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:38,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:38,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558972845] [2025-03-08 16:53:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558972845] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094754881] [2025-03-08 16:53:38,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:38,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:38,461 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) [2025-03-08 16:53:38,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 16:53:38,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:38,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:38,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:38,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:38,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 16:53:38,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:53:38,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-03-08 16:53:38,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 16:53:38,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:38,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2025-03-08 16:53:38,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:38,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 15 [2025-03-08 16:53:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-08 16:53:38,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 16:53:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:38,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094754881] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 16:53:38,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 16:53:38,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-03-08 16:53:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755014169] [2025-03-08 16:53:38,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 16:53:38,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 16:53:38,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:38,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 16:53:38,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2025-03-08 16:53:38,939 INFO L87 Difference]: Start difference. First operand 221 states and 282 transitions. Second operand has 20 states, 17 states have (on average 4.235294117647059) internal successors, (72), 20 states have internal predecessors, (72), 6 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 3 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-08 16:53:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:39,671 INFO L93 Difference]: Finished difference Result 542 states and 677 transitions. [2025-03-08 16:53:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 16:53:39,673 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.235294117647059) internal successors, (72), 20 states have internal predecessors, (72), 6 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 3 states have call predecessors, (12), 6 states have call successors, (12) Word has length 79 [2025-03-08 16:53:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:39,674 INFO L225 Difference]: With dead ends: 542 [2025-03-08 16:53:39,674 INFO L226 Difference]: Without dead ends: 337 [2025-03-08 16:53:39,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=289, Invalid=1117, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 16:53:39,675 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 530 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:39,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 624 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 16:53:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2025-03-08 16:53:39,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 178. [2025-03-08 16:53:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 165 states have (on average 1.2363636363636363) internal successors, (204), 165 states have internal predecessors, (204), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 220 transitions. [2025-03-08 16:53:39,687 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 220 transitions. Word has length 79 [2025-03-08 16:53:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:39,687 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 220 transitions. [2025-03-08 16:53:39,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.235294117647059) internal successors, (72), 20 states have internal predecessors, (72), 6 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 3 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-08 16:53:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 220 transitions. [2025-03-08 16:53:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 16:53:39,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:39,688 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:39,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 16:53:39,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:39,893 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:39,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash -493112393, now seen corresponding path program 1 times [2025-03-08 16:53:39,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:39,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037069346] [2025-03-08 16:53:39,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:39,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:39,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:39,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:39,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:39,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037069346] [2025-03-08 16:53:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037069346] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553523221] [2025-03-08 16:53:40,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:40,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:40,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:40,200 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) [2025-03-08 16:53:40,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 16:53:40,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 16:53:40,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 16:53:40,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:40,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:40,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 16:53:40,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:53:40,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 16:53:40,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-03-08 16:53:40,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-03-08 16:53:40,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:40,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-03-08 16:53:40,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:40,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 25 [2025-03-08 16:53:40,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:40,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-03-08 16:53:40,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:40,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2025-03-08 16:53:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 77 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 16:53:40,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 16:53:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553523221] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 16:53:40,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 16:53:40,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-08 16:53:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357641203] [2025-03-08 16:53:40,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 16:53:40,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 16:53:40,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:40,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 16:53:40,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2025-03-08 16:53:40,626 INFO L87 Difference]: Start difference. First operand 178 states and 220 transitions. Second operand has 19 states, 16 states have (on average 5.1875) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 9 states have call successors, (20) [2025-03-08 16:53:40,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:40,911 INFO L93 Difference]: Finished difference Result 327 states and 409 transitions. [2025-03-08 16:53:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 16:53:40,912 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 5.1875) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 9 states have call successors, (20) Word has length 79 [2025-03-08 16:53:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:40,913 INFO L225 Difference]: With dead ends: 327 [2025-03-08 16:53:40,913 INFO L226 Difference]: Without dead ends: 152 [2025-03-08 16:53:40,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2025-03-08 16:53:40,914 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 348 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:40,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 207 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 16:53:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-03-08 16:53:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2025-03-08 16:53:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 129 states have (on average 1.255813953488372) internal successors, (162), 129 states have internal predecessors, (162), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 178 transitions. [2025-03-08 16:53:40,919 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 178 transitions. Word has length 79 [2025-03-08 16:53:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:40,920 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 178 transitions. [2025-03-08 16:53:40,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 5.1875) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 9 states have call successors, (20) [2025-03-08 16:53:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 178 transitions. [2025-03-08 16:53:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 16:53:40,920 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:40,920 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:40,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 16:53:41,125 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,SelfDestructingSolverStorable13 [2025-03-08 16:53:41,125 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:41,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash -532972440, now seen corresponding path program 1 times [2025-03-08 16:53:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:41,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207513745] [2025-03-08 16:53:41,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:41,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 16:53:41,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 16:53:41,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:41,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:41,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:41,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207513745] [2025-03-08 16:53:41,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207513745] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:41,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032531079] [2025-03-08 16:53:41,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:41,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:41,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:41,201 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) [2025-03-08 16:53:41,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 16:53:41,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 16:53:41,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 16:53:41,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:41,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:41,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 16:53:41,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:53:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:41,316 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:53:41,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032531079] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:41,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:53:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2025-03-08 16:53:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532841816] [2025-03-08 16:53:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:41,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 16:53:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:41,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 16:53:41,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:53:41,317 INFO L87 Difference]: Start difference. First operand 142 states and 178 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:41,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:41,342 INFO L93 Difference]: Finished difference Result 289 states and 363 transitions. [2025-03-08 16:53:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:53:41,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2025-03-08 16:53:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:41,343 INFO L225 Difference]: With dead ends: 289 [2025-03-08 16:53:41,343 INFO L226 Difference]: Without dead ends: 150 [2025-03-08 16:53:41,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:53:41,344 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:41,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 434 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:53:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-08 16:53:41,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2025-03-08 16:53:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 131 states have (on average 1.251908396946565) internal successors, (164), 131 states have internal predecessors, (164), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 180 transitions. [2025-03-08 16:53:41,354 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 180 transitions. Word has length 80 [2025-03-08 16:53:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:41,354 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 180 transitions. [2025-03-08 16:53:41,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 180 transitions. [2025-03-08 16:53:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 16:53:41,355 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:41,355 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:41,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 16:53:41,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 16:53:41,556 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:41,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash -781584315, now seen corresponding path program 1 times [2025-03-08 16:53:41,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:41,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265663780] [2025-03-08 16:53:41,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:41,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:41,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 16:53:41,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 16:53:41,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:41,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:42,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:42,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265663780] [2025-03-08 16:53:42,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265663780] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:42,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843440787] [2025-03-08 16:53:42,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:42,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:42,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:42,130 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) [2025-03-08 16:53:42,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 16:53:42,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 16:53:42,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 16:53:42,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:42,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:42,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-08 16:53:42,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:53:42,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 55 [2025-03-08 16:53:42,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:42,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 70 [2025-03-08 16:53:42,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:42,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 45 [2025-03-08 16:53:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:42,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 16:53:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:42,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843440787] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:42,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 16:53:42,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 12] total 23 [2025-03-08 16:53:42,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941475113] [2025-03-08 16:53:42,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:42,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 16:53:42,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:42,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 16:53:42,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2025-03-08 16:53:42,756 INFO L87 Difference]: Start difference. First operand 144 states and 180 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:43,182 INFO L93 Difference]: Finished difference Result 380 states and 476 transitions. [2025-03-08 16:53:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 16:53:43,183 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2025-03-08 16:53:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:43,184 INFO L225 Difference]: With dead ends: 380 [2025-03-08 16:53:43,184 INFO L226 Difference]: Without dead ends: 239 [2025-03-08 16:53:43,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2025-03-08 16:53:43,185 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 58 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:43,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 726 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 16:53:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-03-08 16:53:43,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 164. [2025-03-08 16:53:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 151 states have (on average 1.2582781456953642) internal successors, (190), 151 states have internal predecessors, (190), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 206 transitions. [2025-03-08 16:53:43,198 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 206 transitions. Word has length 80 [2025-03-08 16:53:43,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:43,198 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 206 transitions. [2025-03-08 16:53:43,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:43,199 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 206 transitions. [2025-03-08 16:53:43,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 16:53:43,199 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:43,199 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:43,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 16:53:43,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:43,400 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:43,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:43,401 INFO L85 PathProgramCache]: Analyzing trace with hash 725967494, now seen corresponding path program 1 times [2025-03-08 16:53:43,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:43,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021245028] [2025-03-08 16:53:43,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:43,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:43,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 16:53:43,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 16:53:43,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:43,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021245028] [2025-03-08 16:53:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021245028] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:43,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 16:53:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77287740] [2025-03-08 16:53:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:43,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 16:53:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:43,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 16:53:43,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:43,617 INFO L87 Difference]: Start difference. First operand 164 states and 206 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:43,751 INFO L93 Difference]: Finished difference Result 392 states and 490 transitions. [2025-03-08 16:53:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:53:43,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2025-03-08 16:53:43,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:43,753 INFO L225 Difference]: With dead ends: 392 [2025-03-08 16:53:43,753 INFO L226 Difference]: Without dead ends: 231 [2025-03-08 16:53:43,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:53:43,753 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 52 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:43,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 364 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:43,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-03-08 16:53:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 164. [2025-03-08 16:53:43,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 151 states have (on average 1.2450331125827814) internal successors, (188), 151 states have internal predecessors, (188), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 204 transitions. [2025-03-08 16:53:43,764 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 204 transitions. Word has length 80 [2025-03-08 16:53:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:43,764 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 204 transitions. [2025-03-08 16:53:43,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 204 transitions. [2025-03-08 16:53:43,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 16:53:43,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:43,766 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:43,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 16:53:43,767 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:43,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash 463180166, now seen corresponding path program 1 times [2025-03-08 16:53:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930513745] [2025-03-08 16:53:43,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:43,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 16:53:43,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 16:53:43,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:43,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930513745] [2025-03-08 16:53:43,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930513745] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:43,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:43,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 16:53:43,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985296171] [2025-03-08 16:53:43,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:43,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 16:53:43,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:43,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 16:53:43,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:53:43,991 INFO L87 Difference]: Start difference. First operand 164 states and 204 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:44,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:44,151 INFO L93 Difference]: Finished difference Result 386 states and 480 transitions. [2025-03-08 16:53:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 16:53:44,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2025-03-08 16:53:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:44,153 INFO L225 Difference]: With dead ends: 386 [2025-03-08 16:53:44,154 INFO L226 Difference]: Without dead ends: 225 [2025-03-08 16:53:44,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:53:44,154 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 51 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:44,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 449 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-03-08 16:53:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 164. [2025-03-08 16:53:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 151 states have (on average 1.2317880794701987) internal successors, (186), 151 states have internal predecessors, (186), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 202 transitions. [2025-03-08 16:53:44,161 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 202 transitions. Word has length 80 [2025-03-08 16:53:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:44,161 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 202 transitions. [2025-03-08 16:53:44,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 202 transitions. [2025-03-08 16:53:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 16:53:44,162 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:44,162 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:44,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 16:53:44,162 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:44,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1970731975, now seen corresponding path program 1 times [2025-03-08 16:53:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288993049] [2025-03-08 16:53:44,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:44,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 16:53:44,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 16:53:44,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:44,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:44,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:44,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288993049] [2025-03-08 16:53:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288993049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:44,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:44,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-08 16:53:44,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455044394] [2025-03-08 16:53:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:44,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 16:53:44,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:44,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 16:53:44,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2025-03-08 16:53:44,814 INFO L87 Difference]: Start difference. First operand 164 states and 202 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:45,745 INFO L93 Difference]: Finished difference Result 823 states and 998 transitions. [2025-03-08 16:53:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 16:53:45,746 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2025-03-08 16:53:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:45,748 INFO L225 Difference]: With dead ends: 823 [2025-03-08 16:53:45,748 INFO L226 Difference]: Without dead ends: 662 [2025-03-08 16:53:45,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 16:53:45,752 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 503 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:45,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 941 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 16:53:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2025-03-08 16:53:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 339. [2025-03-08 16:53:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 314 states have (on average 1.2356687898089171) internal successors, (388), 314 states have internal predecessors, (388), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 16:53:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 420 transitions. [2025-03-08 16:53:45,773 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 420 transitions. Word has length 80 [2025-03-08 16:53:45,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:45,773 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 420 transitions. [2025-03-08 16:53:45,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 420 transitions. [2025-03-08 16:53:45,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-08 16:53:45,774 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:45,774 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:45,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 16:53:45,777 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:45,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash 279122805, now seen corresponding path program 1 times [2025-03-08 16:53:45,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:45,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572091648] [2025-03-08 16:53:45,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:45,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:45,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-08 16:53:45,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-08 16:53:45,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:45,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:46,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:46,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572091648] [2025-03-08 16:53:46,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572091648] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:46,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180942447] [2025-03-08 16:53:46,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:46,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:46,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:53:46,474 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) [2025-03-08 16:53:46,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 16:53:46,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-08 16:53:46,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-08 16:53:46,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:46,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:46,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-03-08 16:53:46,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:53:46,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 16:53:46,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 16:53:46,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 16:53:46,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2025-03-08 16:53:46,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 47 [2025-03-08 16:53:46,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:46,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 62 [2025-03-08 16:53:46,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:53:46,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 35 [2025-03-08 16:53:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 16:53:46,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 16:53:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180942447] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 16:53:47,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 16:53:47,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18, 12] total 26 [2025-03-08 16:53:47,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013260756] [2025-03-08 16:53:47,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:47,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 16:53:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:47,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 16:53:47,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2025-03-08 16:53:47,022 INFO L87 Difference]: Start difference. First operand 339 states and 420 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:47,414 INFO L93 Difference]: Finished difference Result 803 states and 994 transitions. [2025-03-08 16:53:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 16:53:47,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 81 [2025-03-08 16:53:47,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:47,416 INFO L225 Difference]: With dead ends: 803 [2025-03-08 16:53:47,416 INFO L226 Difference]: Without dead ends: 467 [2025-03-08 16:53:47,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2025-03-08 16:53:47,417 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 51 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:47,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 771 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 16:53:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2025-03-08 16:53:47,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 156. [2025-03-08 16:53:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 143 states have (on average 1.2307692307692308) internal successors, (176), 143 states have internal predecessors, (176), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2025-03-08 16:53:47,428 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 81 [2025-03-08 16:53:47,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:47,428 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2025-03-08 16:53:47,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2025-03-08 16:53:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-08 16:53:47,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:47,429 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:47,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 16:53:47,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:53:47,629 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:47,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:47,630 INFO L85 PathProgramCache]: Analyzing trace with hash 34446972, now seen corresponding path program 1 times [2025-03-08 16:53:47,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:47,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972375994] [2025-03-08 16:53:47,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:47,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:47,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-08 16:53:47,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-08 16:53:47,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:47,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:47,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972375994] [2025-03-08 16:53:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972375994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:47,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:47,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 16:53:47,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77003214] [2025-03-08 16:53:47,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:47,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:53:47,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:47,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:53:47,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 16:53:47,677 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:47,726 INFO L93 Difference]: Finished difference Result 263 states and 321 transitions. [2025-03-08 16:53:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:53:47,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 82 [2025-03-08 16:53:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:47,727 INFO L225 Difference]: With dead ends: 263 [2025-03-08 16:53:47,727 INFO L226 Difference]: Without dead ends: 110 [2025-03-08 16:53:47,727 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 [2025-03-08 16:53:47,727 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:47,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:53:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-03-08 16:53:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2025-03-08 16:53:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 97 states have internal predecessors, (115), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2025-03-08 16:53:47,734 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 82 [2025-03-08 16:53:47,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:47,734 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2025-03-08 16:53:47,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2025-03-08 16:53:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-08 16:53:47,735 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:47,735 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:47,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 16:53:47,735 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:47,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:47,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2117798938, now seen corresponding path program 1 times [2025-03-08 16:53:47,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:47,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967058368] [2025-03-08 16:53:47,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:47,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:47,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-08 16:53:47,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-08 16:53:47,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:47,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:47,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967058368] [2025-03-08 16:53:47,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967058368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:47,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:47,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:53:47,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403946877] [2025-03-08 16:53:47,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:47,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:53:47,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:47,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:53:47,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:53:47,800 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:47,901 INFO L93 Difference]: Finished difference Result 272 states and 322 transitions. [2025-03-08 16:53:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:53:47,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 82 [2025-03-08 16:53:47,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:47,903 INFO L225 Difference]: With dead ends: 272 [2025-03-08 16:53:47,903 INFO L226 Difference]: Without dead ends: 162 [2025-03-08 16:53:47,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:47,904 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 42 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:47,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 326 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-08 16:53:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 110. [2025-03-08 16:53:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 16:53:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2025-03-08 16:53:47,911 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 82 [2025-03-08 16:53:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:47,911 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2025-03-08 16:53:47,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2025-03-08 16:53:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 16:53:47,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:47,912 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:47,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 16:53:47,912 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:47,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:47,912 INFO L85 PathProgramCache]: Analyzing trace with hash 996248271, now seen corresponding path program 1 times [2025-03-08 16:53:47,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:47,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378328898] [2025-03-08 16:53:47,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:47,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:47,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 16:53:47,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 16:53:47,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:47,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:48,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:48,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378328898] [2025-03-08 16:53:48,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378328898] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:48,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:48,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 16:53:48,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040200338] [2025-03-08 16:53:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:48,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 16:53:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:48,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 16:53:48,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:53:48,217 INFO L87 Difference]: Start difference. First operand 110 states and 130 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:48,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:48,422 INFO L93 Difference]: Finished difference Result 291 states and 342 transitions. [2025-03-08 16:53:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 16:53:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2025-03-08 16:53:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:48,423 INFO L225 Difference]: With dead ends: 291 [2025-03-08 16:53:48,423 INFO L226 Difference]: Without dead ends: 184 [2025-03-08 16:53:48,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-08 16:53:48,424 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 50 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:48,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 510 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 16:53:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-03-08 16:53:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 173. [2025-03-08 16:53:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 154 states have (on average 1.1623376623376624) internal successors, (179), 155 states have internal predecessors, (179), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 16:53:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 203 transitions. [2025-03-08 16:53:48,435 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 203 transitions. Word has length 83 [2025-03-08 16:53:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:48,435 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 203 transitions. [2025-03-08 16:53:48,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 203 transitions. [2025-03-08 16:53:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 16:53:48,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:48,437 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:48,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-08 16:53:48,437 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:48,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash -687836828, now seen corresponding path program 1 times [2025-03-08 16:53:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:48,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277403916] [2025-03-08 16:53:48,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:48,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:48,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 16:53:48,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 16:53:48,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:48,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277403916] [2025-03-08 16:53:48,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277403916] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:48,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:48,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 16:53:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121705399] [2025-03-08 16:53:48,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:48,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 16:53:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:48,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 16:53:48,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:53:48,685 INFO L87 Difference]: Start difference. First operand 173 states and 203 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:48,820 INFO L93 Difference]: Finished difference Result 442 states and 518 transitions. [2025-03-08 16:53:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 16:53:48,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2025-03-08 16:53:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:48,821 INFO L225 Difference]: With dead ends: 442 [2025-03-08 16:53:48,821 INFO L226 Difference]: Without dead ends: 272 [2025-03-08 16:53:48,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:53:48,822 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 34 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:48,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 273 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:48,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2025-03-08 16:53:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2025-03-08 16:53:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 224 states have (on average 1.1741071428571428) internal successors, (263), 225 states have internal predecessors, (263), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 16:53:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 287 transitions. [2025-03-08 16:53:48,835 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 287 transitions. Word has length 83 [2025-03-08 16:53:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:48,836 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 287 transitions. [2025-03-08 16:53:48,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 287 transitions. [2025-03-08 16:53:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 16:53:48,837 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:48,837 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:48,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-08 16:53:48,837 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:48,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2053954544, now seen corresponding path program 1 times [2025-03-08 16:53:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780124221] [2025-03-08 16:53:48,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:48,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 16:53:48,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 16:53:48,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:48,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:48,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:48,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780124221] [2025-03-08 16:53:48,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780124221] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:48,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:48,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:53:48,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091142202] [2025-03-08 16:53:48,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:48,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:53:48,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:48,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:53:48,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:53:48,889 INFO L87 Difference]: Start difference. First operand 243 states and 287 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:49,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:49,002 INFO L93 Difference]: Finished difference Result 558 states and 657 transitions. [2025-03-08 16:53:49,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:53:49,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 83 [2025-03-08 16:53:49,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:49,004 INFO L225 Difference]: With dead ends: 558 [2025-03-08 16:53:49,004 INFO L226 Difference]: Without dead ends: 318 [2025-03-08 16:53:49,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:49,005 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 43 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:49,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 347 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:49,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2025-03-08 16:53:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 273. [2025-03-08 16:53:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 254 states have (on average 1.169291338582677) internal successors, (297), 255 states have internal predecessors, (297), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 16:53:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 321 transitions. [2025-03-08 16:53:49,021 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 321 transitions. Word has length 83 [2025-03-08 16:53:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:49,021 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 321 transitions. [2025-03-08 16:53:49,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:49,023 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 321 transitions. [2025-03-08 16:53:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-08 16:53:49,024 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:49,024 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:49,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-08 16:53:49,024 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:49,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1729630966, now seen corresponding path program 1 times [2025-03-08 16:53:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:49,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478410871] [2025-03-08 16:53:49,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:49,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:49,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-08 16:53:49,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-08 16:53:49,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:49,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478410871] [2025-03-08 16:53:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478410871] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:49,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 16:53:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243787700] [2025-03-08 16:53:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:49,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 16:53:49,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:49,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 16:53:49,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:49,294 INFO L87 Difference]: Start difference. First operand 273 states and 321 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:49,400 INFO L93 Difference]: Finished difference Result 543 states and 639 transitions. [2025-03-08 16:53:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:53:49,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2025-03-08 16:53:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:49,403 INFO L225 Difference]: With dead ends: 543 [2025-03-08 16:53:49,403 INFO L226 Difference]: Without dead ends: 273 [2025-03-08 16:53:49,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:53:49,404 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 50 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:49,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 220 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2025-03-08 16:53:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2025-03-08 16:53:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 254 states have (on average 1.1456692913385826) internal successors, (291), 255 states have internal predecessors, (291), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 16:53:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 315 transitions. [2025-03-08 16:53:49,418 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 315 transitions. Word has length 84 [2025-03-08 16:53:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:49,418 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 315 transitions. [2025-03-08 16:53:49,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:49,418 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 315 transitions. [2025-03-08 16:53:49,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-08 16:53:49,419 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:49,419 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:49,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-08 16:53:49,420 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:49,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1129799068, now seen corresponding path program 1 times [2025-03-08 16:53:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:49,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608990891] [2025-03-08 16:53:49,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:49,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-08 16:53:49,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-08 16:53:49,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:49,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:49,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:49,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608990891] [2025-03-08 16:53:49,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608990891] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:49,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:49,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:53:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248830791] [2025-03-08 16:53:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:49,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:53:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:49,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:53:49,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:53:49,504 INFO L87 Difference]: Start difference. First operand 273 states and 315 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:49,597 INFO L93 Difference]: Finished difference Result 639 states and 738 transitions. [2025-03-08 16:53:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:53:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2025-03-08 16:53:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:49,599 INFO L225 Difference]: With dead ends: 639 [2025-03-08 16:53:49,599 INFO L226 Difference]: Without dead ends: 369 [2025-03-08 16:53:49,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:49,600 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 33 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:49,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 244 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2025-03-08 16:53:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 293. [2025-03-08 16:53:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 274 states have (on average 1.135036496350365) internal successors, (311), 275 states have internal predecessors, (311), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 16:53:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2025-03-08 16:53:49,614 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 86 [2025-03-08 16:53:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:49,614 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2025-03-08 16:53:49,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2025-03-08 16:53:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-08 16:53:49,615 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:49,615 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:49,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-08 16:53:49,615 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:49,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:49,615 INFO L85 PathProgramCache]: Analyzing trace with hash -528256896, now seen corresponding path program 1 times [2025-03-08 16:53:49,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:49,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407261458] [2025-03-08 16:53:49,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:49,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:49,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-08 16:53:49,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-08 16:53:49,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:49,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407261458] [2025-03-08 16:53:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407261458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:49,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:49,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:53:49,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509834576] [2025-03-08 16:53:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:49,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:53:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:49,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:53:49,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:53:49,682 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:49,782 INFO L93 Difference]: Finished difference Result 604 states and 688 transitions. [2025-03-08 16:53:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:53:49,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2025-03-08 16:53:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:49,784 INFO L225 Difference]: With dead ends: 604 [2025-03-08 16:53:49,784 INFO L226 Difference]: Without dead ends: 314 [2025-03-08 16:53:49,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:53:49,785 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 29 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:49,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 302 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-03-08 16:53:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 279. [2025-03-08 16:53:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 260 states have (on average 1.1192307692307693) internal successors, (291), 261 states have internal predecessors, (291), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 16:53:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 315 transitions. [2025-03-08 16:53:49,799 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 315 transitions. Word has length 86 [2025-03-08 16:53:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:49,799 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 315 transitions. [2025-03-08 16:53:49,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 315 transitions. [2025-03-08 16:53:49,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 16:53:49,800 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:49,800 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:49,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-08 16:53:49,800 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:49,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1246913370, now seen corresponding path program 1 times [2025-03-08 16:53:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:49,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985119831] [2025-03-08 16:53:49,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:49,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 16:53:49,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 16:53:49,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:49,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:50,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985119831] [2025-03-08 16:53:50,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985119831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:50,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:50,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 16:53:50,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238211811] [2025-03-08 16:53:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:50,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 16:53:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:50,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 16:53:50,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:53:50,398 INFO L87 Difference]: Start difference. First operand 279 states and 315 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:50,630 INFO L93 Difference]: Finished difference Result 564 states and 638 transitions. [2025-03-08 16:53:50,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:53:50,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2025-03-08 16:53:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:50,632 INFO L225 Difference]: With dead ends: 564 [2025-03-08 16:53:50,632 INFO L226 Difference]: Without dead ends: 288 [2025-03-08 16:53:50,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-08 16:53:50,633 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 35 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:50,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 487 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 16:53:50,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2025-03-08 16:53:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 281. [2025-03-08 16:53:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 262 states have (on average 1.118320610687023) internal successors, (293), 263 states have internal predecessors, (293), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 16:53:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 317 transitions. [2025-03-08 16:53:50,648 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 317 transitions. Word has length 88 [2025-03-08 16:53:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:50,648 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 317 transitions. [2025-03-08 16:53:50,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 16:53:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 317 transitions. [2025-03-08 16:53:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-08 16:53:50,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:53:50,649 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:53:50,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-08 16:53:50,649 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:53:50,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:53:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2079285565, now seen corresponding path program 1 times [2025-03-08 16:53:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:53:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002994013] [2025-03-08 16:53:50,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:53:50,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:53:50,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-08 16:53:50,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 16:53:50,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:53:50,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:53:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 16:53:50,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:53:50,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002994013] [2025-03-08 16:53:50,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002994013] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:53:50,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:53:50,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:53:50,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997997264] [2025-03-08 16:53:50,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:53:50,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:53:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:53:50,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:53:50,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:53:50,715 INFO L87 Difference]: Start difference. First operand 281 states and 317 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:50,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:53:50,783 INFO L93 Difference]: Finished difference Result 535 states and 602 transitions. [2025-03-08 16:53:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:53:50,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 90 [2025-03-08 16:53:50,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:53:50,784 INFO L225 Difference]: With dead ends: 535 [2025-03-08 16:53:50,785 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 16:53:50,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:53:50,786 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:53:50,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 224 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:53:50,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 16:53:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 16:53:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 16:53:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 16:53:50,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2025-03-08 16:53:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:53:50,789 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 16:53:50,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 16:53:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 16:53:50,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 16:53:50,791 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 16:53:50,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-08 16:53:50,793 INFO L422 BasicCegarLoop]: Path program 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] [2025-03-08 16:53:50,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 16:54:02,110 WARN L286 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 146 DAG size of output: 140 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2025-03-08 16:54:06,329 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 16:54:06,335 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,336 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,336 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,336 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,337 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,338 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,339 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,340 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2025-03-08 16:54:06,341 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] [2025-03-08 16:54:06,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 04:54:06 BoogieIcfgContainer [2025-03-08 16:54:06,341 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 16:54:06,342 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 16:54:06,342 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 16:54:06,342 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 16:54:06,343 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:53:31" (3/4) ... [2025-03-08 16:54:06,344 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 16:54:06,349 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-08 16:54:06,352 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-08 16:54:06,353 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 16:54:06,353 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 16:54:06,353 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 16:54:06,428 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 16:54:06,429 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 16:54:06,429 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 16:54:06,429 INFO L158 Benchmark]: Toolchain (without parser) took 35950.07ms. Allocated memory was 167.8MB in the beginning and 704.6MB in the end (delta: 536.9MB). Free memory was 129.7MB in the beginning and 454.0MB in the end (delta: -324.3MB). Peak memory consumption was 211.7MB. Max. memory is 16.1GB. [2025-03-08 16:54:06,429 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 16:54:06,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.98ms. Allocated memory is still 167.8MB. Free memory was 129.3MB in the beginning and 115.3MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 16:54:06,432 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.55ms. Allocated memory is still 167.8MB. Free memory was 115.3MB in the beginning and 112.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 16:54:06,432 INFO L158 Benchmark]: Boogie Preprocessor took 43.70ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 110.0MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 16:54:06,432 INFO L158 Benchmark]: IcfgBuilder took 454.14ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 85.9MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 16:54:06,432 INFO L158 Benchmark]: TraceAbstraction took 35103.38ms. Allocated memory was 167.8MB in the beginning and 704.6MB in the end (delta: 536.9MB). Free memory was 85.5MB in the beginning and 462.3MB in the end (delta: -376.9MB). Peak memory consumption was 375.0MB. Max. memory is 16.1GB. [2025-03-08 16:54:06,433 INFO L158 Benchmark]: Witness Printer took 86.79ms. Allocated memory is still 704.6MB. Free memory was 462.3MB in the beginning and 454.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 16:54:06,434 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.98ms. Allocated memory is still 167.8MB. Free memory was 129.3MB in the beginning and 115.3MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.55ms. Allocated memory is still 167.8MB. Free memory was 115.3MB in the beginning and 112.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.70ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 110.0MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 454.14ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 85.9MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 35103.38ms. Allocated memory was 167.8MB in the beginning and 704.6MB in the end (delta: 536.9MB). Free memory was 85.5MB in the beginning and 462.3MB in the end (delta: -376.9MB). Peak memory consumption was 375.0MB. Max. memory is 16.1GB. * Witness Printer took 86.79ms. Allocated memory is still 704.6MB. Free memory was 462.3MB in the beginning and 454.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#WrapperStruct00~0!base,GLOBAL]]] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 110 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.5s, OverallIterations: 30, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2439 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2418 mSDsluCounter, 11605 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8976 mSDsCounter, 421 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7278 IncrementalHoareTripleChecker+Invalid, 7699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 421 mSolverCounterUnsat, 2629 mSDtfsCounter, 7278 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1367 GetRequests, 1074 SyntacticMatches, 2 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339occurred in iteration=19, InterpolantAutomatonStates: 224, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 30 MinimizatonAttempts, 1496 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 3028 NumberOfCodeBlocks, 3028 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 3305 ConstructedInterpolants, 0 QuantifiedInterpolants, 13307 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2045 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 42 InterpolantComputations, 28 PerfectInterpolantSequences, 4540/4704 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-08 16:54:06,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE