./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:42:23,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:42:23,570 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 07:42:23,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:42:23,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:42:23,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:42:23,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:42:23,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:42:23,595 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:42:23,595 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:42:23,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:42:23,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:42:23,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:42:23,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:42:23,596 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:42:23,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:42:23,597 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:42:23,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:42:23,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:42:23,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:42:23,598 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:42:23,598 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:42:23,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 07:42:23,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 07:42:23,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:42:23,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:42:23,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:42:23,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:42:23,599 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 [2025-03-08 07:42:23,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:42:23,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:42:23,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:42:23,804 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:42:23,804 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:42:23,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2025-03-08 07:42:24,943 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd3e993d/b57225e9247441aebfcd9a401bd05fcf/FLAG79bf0b32b [2025-03-08 07:42:25,268 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:42:25,269 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2025-03-08 07:42:25,279 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd3e993d/b57225e9247441aebfcd9a401bd05fcf/FLAG79bf0b32b [2025-03-08 07:42:25,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd3e993d/b57225e9247441aebfcd9a401bd05fcf [2025-03-08 07:42:25,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:42:25,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:42:25,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:42:25,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:42:25,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:42:25,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:25,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a09e4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25, skipping insertion in model container [2025-03-08 07:42:25,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:25,549 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:42:25,657 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2025-03-08 07:42:25,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:42:25,846 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:42:25,855 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2025-03-08 07:42:25,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:42:25,978 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:42:25,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25 WrapperNode [2025-03-08 07:42:25,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:42:25,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:42:25,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:42:25,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:42:25,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,292 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3678 [2025-03-08 07:42:26,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:42:26,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:42:26,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:42:26,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:42:26,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,481 INFO L175 MemorySlicer]: Split 63 memory accesses to 4 slices as follows [2, 24, 29, 8]. 46 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 30 writes are split as follows [0, 12, 14, 4]. [2025-03-08 07:42:26,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,584 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:42:26,721 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:42:26,721 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:42:26,721 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:42:26,722 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (1/1) ... [2025-03-08 07:42:26,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:42:26,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:26,746 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 07:42:26,748 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 07:42:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:42:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 07:42:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 07:42:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 07:42:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:42:26,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 07:42:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 07:42:27,023 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:42:27,025 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:42:29,263 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L144: call ULTIMATE.dealloc(main_~#state_13~0#1.base, main_~#state_13~0#1.offset);havoc main_~#state_13~0#1.base, main_~#state_13~0#1.offset;call ULTIMATE.dealloc(main_~#state_15~0#1.base, main_~#state_15~0#1.offset);havoc main_~#state_15~0#1.base, main_~#state_15~0#1.offset;call ULTIMATE.dealloc(main_~#state_249~0#1.base, main_~#state_249~0#1.offset);havoc main_~#state_249~0#1.base, main_~#state_249~0#1.offset; [2025-03-08 07:42:29,682 INFO L? ?]: Removed 1891 outVars from TransFormulas that were not future-live. [2025-03-08 07:42:29,682 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:42:29,774 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:42:29,774 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:42:29,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:42:29 BoogieIcfgContainer [2025-03-08 07:42:29,774 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:42:29,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:42:29,776 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:42:29,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:42:29,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:42:25" (1/3) ... [2025-03-08 07:42:29,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7372befc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:42:29, skipping insertion in model container [2025-03-08 07:42:29,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:42:25" (2/3) ... [2025-03-08 07:42:29,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7372befc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:42:29, skipping insertion in model container [2025-03-08 07:42:29,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:42:29" (3/3) ... [2025-03-08 07:42:29,781 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2025-03-08 07:42:29,793 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:42:29,794 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c that has 2 procedures, 1113 locations, 1 initial locations, 19 loop locations, and 1 error locations. [2025-03-08 07:42:29,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:42:29,859 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;@46b482cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:42:29,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 07:42:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 1113 states, 1105 states have (on average 1.5040723981900452) internal successors, (1662), 1106 states have internal predecessors, (1662), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 07:42:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2025-03-08 07:42:29,885 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:29,885 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:29,886 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:29,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1130841553, now seen corresponding path program 1 times [2025-03-08 07:42:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:29,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483223416] [2025-03-08 07:42:29,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:30,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 332 statements into 1 equivalence classes. [2025-03-08 07:42:30,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 332 of 332 statements. [2025-03-08 07:42:30,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:30,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 07:42:30,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483223416] [2025-03-08 07:42:30,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483223416] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:30,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594371128] [2025-03-08 07:42:30,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:30,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:30,513 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 07:42:30,514 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 07:42:30,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 332 statements into 1 equivalence classes. [2025-03-08 07:42:30,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 332 of 332 statements. [2025-03-08 07:42:30,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:30,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:30,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 07:42:31,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 07:42:31,040 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 07:42:31,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594371128] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:42:31,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 07:42:31,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 07:42:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196634553] [2025-03-08 07:42:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:31,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 07:42:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:31,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 07:42:31,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 07:42:31,064 INFO L87 Difference]: Start difference. First operand has 1113 states, 1105 states have (on average 1.5040723981900452) internal successors, (1662), 1106 states have internal predecessors, (1662), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:42:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:31,390 INFO L93 Difference]: Finished difference Result 1774 states and 2673 transitions. [2025-03-08 07:42:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 07:42:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 332 [2025-03-08 07:42:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:31,402 INFO L225 Difference]: With dead ends: 1774 [2025-03-08 07:42:31,402 INFO L226 Difference]: Without dead ends: 1110 [2025-03-08 07:42:31,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 333 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 07:42:31,412 INFO L435 NwaCegarLoop]: 1399 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:31,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1399 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:42:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2025-03-08 07:42:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2025-03-08 07:42:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1103 states have (on average 1.5022665457842248) internal successors, (1657), 1103 states have internal predecessors, (1657), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 07:42:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1667 transitions. [2025-03-08 07:42:31,490 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1667 transitions. Word has length 332 [2025-03-08 07:42:31,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:31,491 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1667 transitions. [2025-03-08 07:42:31,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:42:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1667 transitions. [2025-03-08 07:42:31,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2025-03-08 07:42:31,495 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:31,495 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:31,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 07:42:31,700 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 07:42:31,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:31,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1352756150, now seen corresponding path program 1 times [2025-03-08 07:42:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:31,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696379794] [2025-03-08 07:42:31,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:31,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:31,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 332 statements into 1 equivalence classes. [2025-03-08 07:42:31,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 332 of 332 statements. [2025-03-08 07:42:31,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:31,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-08 07:42:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:32,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696379794] [2025-03-08 07:42:32,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696379794] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:42:32,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:42:32,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:42:32,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535429637] [2025-03-08 07:42:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:32,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:42:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:32,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:42:32,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:42:32,293 INFO L87 Difference]: Start difference. First operand 1110 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:32,641 INFO L93 Difference]: Finished difference Result 2218 states and 3332 transitions. [2025-03-08 07:42:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:42:32,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 332 [2025-03-08 07:42:32,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:32,648 INFO L225 Difference]: With dead ends: 2218 [2025-03-08 07:42:32,648 INFO L226 Difference]: Without dead ends: 1115 [2025-03-08 07:42:32,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:42:32,650 INFO L435 NwaCegarLoop]: 1397 mSDtfsCounter, 6 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:32,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2792 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:42:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2025-03-08 07:42:32,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1111. [2025-03-08 07:42:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1104 states have (on average 1.5018115942028984) internal successors, (1658), 1104 states have internal predecessors, (1658), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 07:42:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1668 transitions. [2025-03-08 07:42:32,679 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1668 transitions. Word has length 332 [2025-03-08 07:42:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:32,680 INFO L471 AbstractCegarLoop]: Abstraction has 1111 states and 1668 transitions. [2025-03-08 07:42:32,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1668 transitions. [2025-03-08 07:42:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2025-03-08 07:42:32,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:32,685 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:32,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 07:42:32,685 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:32,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash 122763062, now seen corresponding path program 1 times [2025-03-08 07:42:32,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:32,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540068350] [2025-03-08 07:42:32,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:32,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:32,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 335 statements into 1 equivalence classes. [2025-03-08 07:42:32,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 335 of 335 statements. [2025-03-08 07:42:32,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:32,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-08 07:42:33,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:33,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540068350] [2025-03-08 07:42:33,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540068350] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:33,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560575999] [2025-03-08 07:42:33,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:33,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:33,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:33,176 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 07:42:33,177 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 07:42:33,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 335 statements into 1 equivalence classes. [2025-03-08 07:42:33,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 335 of 335 statements. [2025-03-08 07:42:33,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:33,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:33,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 07:42:33,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-08 07:42:33,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:42:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560575999] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:33,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:42:33,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2025-03-08 07:42:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117499525] [2025-03-08 07:42:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:33,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:42:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:33,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:42:33,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:42:33,718 INFO L87 Difference]: Start difference. First operand 1111 states and 1668 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:34,044 INFO L93 Difference]: Finished difference Result 2037 states and 3059 transitions. [2025-03-08 07:42:34,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:42:34,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 335 [2025-03-08 07:42:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:34,049 INFO L225 Difference]: With dead ends: 2037 [2025-03-08 07:42:34,050 INFO L226 Difference]: Without dead ends: 1112 [2025-03-08 07:42:34,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:42:34,053 INFO L435 NwaCegarLoop]: 1397 mSDtfsCounter, 6 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:34,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2787 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:42:34,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2025-03-08 07:42:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2025-03-08 07:42:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1105 states have (on average 1.5013574660633484) internal successors, (1659), 1105 states have internal predecessors, (1659), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 07:42:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1669 transitions. [2025-03-08 07:42:34,085 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1669 transitions. Word has length 335 [2025-03-08 07:42:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:34,086 INFO L471 AbstractCegarLoop]: Abstraction has 1112 states and 1669 transitions. [2025-03-08 07:42:34,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1669 transitions. [2025-03-08 07:42:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2025-03-08 07:42:34,092 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:34,092 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:34,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 07:42:34,296 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,SelfDestructingSolverStorable2 [2025-03-08 07:42:34,296 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:34,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1843538136, now seen corresponding path program 1 times [2025-03-08 07:42:34,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:34,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418409951] [2025-03-08 07:42:34,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:34,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:34,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 338 statements into 1 equivalence classes. [2025-03-08 07:42:34,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 338 of 338 statements. [2025-03-08 07:42:34,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:34,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:34,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418409951] [2025-03-08 07:42:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418409951] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002429251] [2025-03-08 07:42:34,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:34,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:34,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:34,732 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 07:42:34,733 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 07:42:35,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 338 statements into 1 equivalence classes. [2025-03-08 07:42:35,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 338 of 338 statements. [2025-03-08 07:42:35,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:35,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:35,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-03-08 07:42:35,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:35,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:42:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 07:42:36,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002429251] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:36,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:42:36,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 13 [2025-03-08 07:42:36,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114881774] [2025-03-08 07:42:36,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:36,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:42:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:36,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:42:36,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-08 07:42:36,738 INFO L87 Difference]: Start difference. First operand 1112 states and 1669 transitions. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:42:39,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:39,429 INFO L93 Difference]: Finished difference Result 2506 states and 3764 transitions. [2025-03-08 07:42:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 07:42:39,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 338 [2025-03-08 07:42:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:39,439 INFO L225 Difference]: With dead ends: 2506 [2025-03-08 07:42:39,440 INFO L226 Difference]: Without dead ends: 1845 [2025-03-08 07:42:39,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2025-03-08 07:42:39,444 INFO L435 NwaCegarLoop]: 1443 mSDtfsCounter, 7101 mSDsluCounter, 4108 mSDsCounter, 0 mSdLazyCounter, 3443 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7106 SdHoareTripleChecker+Valid, 5551 SdHoareTripleChecker+Invalid, 3594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:39,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7106 Valid, 5551 Invalid, 3594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3443 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-08 07:42:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2025-03-08 07:42:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1210. [2025-03-08 07:42:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1199 states have (on average 1.4987489574645538) internal successors, (1797), 1199 states have internal predecessors, (1797), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-08 07:42:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1815 transitions. [2025-03-08 07:42:39,483 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1815 transitions. Word has length 338 [2025-03-08 07:42:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:39,483 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1815 transitions. [2025-03-08 07:42:39,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:42:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1815 transitions. [2025-03-08 07:42:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2025-03-08 07:42:39,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:39,488 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:39,497 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 07:42:39,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:39,692 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:39,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1515611073, now seen corresponding path program 1 times [2025-03-08 07:42:39,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:39,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317372473] [2025-03-08 07:42:39,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:39,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:39,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 339 statements into 1 equivalence classes. [2025-03-08 07:42:39,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 339 of 339 statements. [2025-03-08 07:42:39,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:39,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:40,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:40,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317372473] [2025-03-08 07:42:40,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317372473] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:40,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172796984] [2025-03-08 07:42:40,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:40,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:40,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:40,042 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 07:42:40,044 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 07:42:40,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 339 statements into 1 equivalence classes. [2025-03-08 07:42:40,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 339 of 339 statements. [2025-03-08 07:42:40,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:40,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:40,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 07:42:40,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:40,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:42:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 07:42:41,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172796984] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:41,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:42:41,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 12 [2025-03-08 07:42:41,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151262817] [2025-03-08 07:42:41,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:41,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 07:42:41,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:41,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 07:42:41,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-03-08 07:42:41,056 INFO L87 Difference]: Start difference. First operand 1210 states and 1815 transitions. Second operand has 8 states, 8 states have (on average 39.625) internal successors, (317), 8 states have internal predecessors, (317), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:42:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:41,424 INFO L93 Difference]: Finished difference Result 1967 states and 2951 transitions. [2025-03-08 07:42:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:42:41,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.625) internal successors, (317), 8 states have internal predecessors, (317), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 339 [2025-03-08 07:42:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:41,428 INFO L225 Difference]: With dead ends: 1967 [2025-03-08 07:42:41,428 INFO L226 Difference]: Without dead ends: 1210 [2025-03-08 07:42:41,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-03-08 07:42:41,430 INFO L435 NwaCegarLoop]: 1377 mSDtfsCounter, 1380 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:41,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 2797 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:42:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2025-03-08 07:42:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2025-03-08 07:42:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1199 states have (on average 1.4979149291075897) internal successors, (1796), 1199 states have internal predecessors, (1796), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-08 07:42:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1814 transitions. [2025-03-08 07:42:41,451 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1814 transitions. Word has length 339 [2025-03-08 07:42:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:41,452 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1814 transitions. [2025-03-08 07:42:41,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.625) internal successors, (317), 8 states have internal predecessors, (317), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:42:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1814 transitions. [2025-03-08 07:42:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2025-03-08 07:42:41,455 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:41,455 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:41,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 07:42:41,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:41,656 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:41,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:41,656 INFO L85 PathProgramCache]: Analyzing trace with hash -981752993, now seen corresponding path program 1 times [2025-03-08 07:42:41,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:41,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425732975] [2025-03-08 07:42:41,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:41,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:41,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 339 statements into 1 equivalence classes. [2025-03-08 07:42:41,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 339 of 339 statements. [2025-03-08 07:42:41,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:41,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:41,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:41,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425732975] [2025-03-08 07:42:41,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425732975] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:41,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828594720] [2025-03-08 07:42:41,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:41,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:41,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:41,947 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 07:42:41,949 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 07:42:42,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 339 statements into 1 equivalence classes. [2025-03-08 07:42:42,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 339 of 339 statements. [2025-03-08 07:42:42,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:42,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:42,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 07:42:42,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:42,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:42:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 07:42:43,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828594720] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:43,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:42:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 9 [2025-03-08 07:42:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613530170] [2025-03-08 07:42:43,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:43,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 07:42:43,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:43,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 07:42:43,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:42:43,408 INFO L87 Difference]: Start difference. First operand 1210 states and 1814 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:44,254 INFO L93 Difference]: Finished difference Result 1967 states and 2949 transitions. [2025-03-08 07:42:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:42:44,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 339 [2025-03-08 07:42:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:44,258 INFO L225 Difference]: With dead ends: 1967 [2025-03-08 07:42:44,258 INFO L226 Difference]: Without dead ends: 1210 [2025-03-08 07:42:44,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 07:42:44,260 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 1416 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:44,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 1715 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 07:42:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2025-03-08 07:42:44,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2025-03-08 07:42:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1199 states have (on average 1.4970809007506256) internal successors, (1795), 1199 states have internal predecessors, (1795), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-08 07:42:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1813 transitions. [2025-03-08 07:42:44,281 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1813 transitions. Word has length 339 [2025-03-08 07:42:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:44,282 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1813 transitions. [2025-03-08 07:42:44,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1813 transitions. [2025-03-08 07:42:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-08 07:42:44,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:44,285 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:44,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 07:42:44,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:44,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:44,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash 245882909, now seen corresponding path program 1 times [2025-03-08 07:42:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987559757] [2025-03-08 07:42:44,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:44,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:44,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-08 07:42:44,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-08 07:42:44,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:44,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:44,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987559757] [2025-03-08 07:42:44,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987559757] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678291303] [2025-03-08 07:42:44,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:44,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:44,738 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 07:42:44,740 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 07:42:45,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-08 07:42:45,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-08 07:42:45,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:45,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:45,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 07:42:45,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:45,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:42:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:45,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678291303] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:42:45,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:42:45,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 8] total 12 [2025-03-08 07:42:45,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236720282] [2025-03-08 07:42:45,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:42:45,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 07:42:45,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:45,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 07:42:45,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-08 07:42:45,714 INFO L87 Difference]: Start difference. First operand 1210 states and 1813 transitions. Second operand has 12 states, 12 states have (on average 49.0) internal successors, (588), 12 states have internal predecessors, (588), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 07:42:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:47,892 INFO L93 Difference]: Finished difference Result 3145 states and 4715 transitions. [2025-03-08 07:42:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:42:47,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 49.0) internal successors, (588), 12 states have internal predecessors, (588), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 340 [2025-03-08 07:42:47,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:47,898 INFO L225 Difference]: With dead ends: 3145 [2025-03-08 07:42:47,898 INFO L226 Difference]: Without dead ends: 1943 [2025-03-08 07:42:47,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2025-03-08 07:42:47,899 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 5631 mSDsluCounter, 5024 mSDsCounter, 0 mSdLazyCounter, 5776 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5639 SdHoareTripleChecker+Valid, 5874 SdHoareTripleChecker+Invalid, 5788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:47,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5639 Valid, 5874 Invalid, 5788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 5776 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 07:42:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2025-03-08 07:42:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1315. [2025-03-08 07:42:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1300 states have (on average 1.493076923076923) internal successors, (1941), 1300 states have internal predecessors, (1941), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 07:42:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1967 transitions. [2025-03-08 07:42:47,936 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1967 transitions. Word has length 340 [2025-03-08 07:42:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:47,936 INFO L471 AbstractCegarLoop]: Abstraction has 1315 states and 1967 transitions. [2025-03-08 07:42:47,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.0) internal successors, (588), 12 states have internal predecessors, (588), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 07:42:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1967 transitions. [2025-03-08 07:42:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2025-03-08 07:42:47,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:47,939 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:47,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 07:42:48,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:48,144 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:48,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2101900141, now seen corresponding path program 1 times [2025-03-08 07:42:48,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:48,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151320424] [2025-03-08 07:42:48,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:48,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:48,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 344 statements into 1 equivalence classes. [2025-03-08 07:42:48,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 344 of 344 statements. [2025-03-08 07:42:48,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:48,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:48,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151320424] [2025-03-08 07:42:48,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151320424] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994532352] [2025-03-08 07:42:48,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:48,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:48,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:48,449 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 07:42:48,450 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 07:42:48,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 344 statements into 1 equivalence classes. [2025-03-08 07:42:48,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 344 of 344 statements. [2025-03-08 07:42:48,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:48,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:48,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 07:42:48,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-08 07:42:49,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:42:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 07:42:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994532352] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:42:49,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:42:49,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2025-03-08 07:42:49,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670780454] [2025-03-08 07:42:49,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:42:49,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:42:49,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:49,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:42:49,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:42:49,038 INFO L87 Difference]: Start difference. First operand 1315 states and 1967 transitions. Second operand has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-08 07:42:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:49,699 INFO L93 Difference]: Finished difference Result 2641 states and 3954 transitions. [2025-03-08 07:42:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:42:49,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 344 [2025-03-08 07:42:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:49,703 INFO L225 Difference]: With dead ends: 2641 [2025-03-08 07:42:49,703 INFO L226 Difference]: Without dead ends: 1339 [2025-03-08 07:42:49,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-08 07:42:49,705 INFO L435 NwaCegarLoop]: 1401 mSDtfsCounter, 44 mSDsluCounter, 8367 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 9768 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:49,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 9768 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 07:42:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2025-03-08 07:42:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1335. [2025-03-08 07:42:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1320 states have (on average 1.4916666666666667) internal successors, (1969), 1320 states have internal predecessors, (1969), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 07:42:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1995 transitions. [2025-03-08 07:42:49,727 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1995 transitions. Word has length 344 [2025-03-08 07:42:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:49,727 INFO L471 AbstractCegarLoop]: Abstraction has 1335 states and 1995 transitions. [2025-03-08 07:42:49,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-08 07:42:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1995 transitions. [2025-03-08 07:42:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-03-08 07:42:49,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:49,730 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:49,739 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 07:42:49,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:49,930 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:49,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1456109755, now seen corresponding path program 2 times [2025-03-08 07:42:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:49,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773004669] [2025-03-08 07:42:49,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 07:42:49,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:49,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 356 statements into 2 equivalence classes. [2025-03-08 07:42:49,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 278 of 356 statements. [2025-03-08 07:42:49,988 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 07:42:49,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-08 07:42:50,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:50,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773004669] [2025-03-08 07:42:50,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773004669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:42:50,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:42:50,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:42:50,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593147135] [2025-03-08 07:42:50,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:50,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:42:50,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:50,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:42:50,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:42:50,099 INFO L87 Difference]: Start difference. First operand 1335 states and 1995 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:50,423 INFO L93 Difference]: Finished difference Result 2652 states and 3965 transitions. [2025-03-08 07:42:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:42:50,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 356 [2025-03-08 07:42:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:50,427 INFO L225 Difference]: With dead ends: 2652 [2025-03-08 07:42:50,427 INFO L226 Difference]: Without dead ends: 1340 [2025-03-08 07:42:50,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:42:50,429 INFO L435 NwaCegarLoop]: 1395 mSDtfsCounter, 6 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:50,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2787 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:42:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2025-03-08 07:42:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1336. [2025-03-08 07:42:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1321 states have (on average 1.4912944738834217) internal successors, (1970), 1321 states have internal predecessors, (1970), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 07:42:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1996 transitions. [2025-03-08 07:42:50,453 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1996 transitions. Word has length 356 [2025-03-08 07:42:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:50,453 INFO L471 AbstractCegarLoop]: Abstraction has 1336 states and 1996 transitions. [2025-03-08 07:42:50,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:50,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1996 transitions. [2025-03-08 07:42:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2025-03-08 07:42:50,456 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:50,456 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:50,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 07:42:50,456 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:50,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:50,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1279418732, now seen corresponding path program 1 times [2025-03-08 07:42:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641956213] [2025-03-08 07:42:50,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:50,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-03-08 07:42:50,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-03-08 07:42:50,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:50,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-08 07:42:50,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641956213] [2025-03-08 07:42:50,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641956213] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433042511] [2025-03-08 07:42:50,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:50,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:50,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:50,803 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 07:42:50,805 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 07:42:51,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-03-08 07:42:51,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-03-08 07:42:51,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:51,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:51,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 07:42:51,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-08 07:42:51,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:42:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 07:42:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433042511] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:42:51,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:42:51,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 10] total 15 [2025-03-08 07:42:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303415502] [2025-03-08 07:42:51,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:42:51,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 07:42:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:51,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 07:42:51,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2025-03-08 07:42:51,431 INFO L87 Difference]: Start difference. First operand 1336 states and 1996 transitions. Second operand has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-08 07:42:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:52,560 INFO L93 Difference]: Finished difference Result 2663 states and 3981 transitions. [2025-03-08 07:42:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:42:52,561 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 359 [2025-03-08 07:42:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:52,564 INFO L225 Difference]: With dead ends: 2663 [2025-03-08 07:42:52,564 INFO L226 Difference]: Without dead ends: 1345 [2025-03-08 07:42:52,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2025-03-08 07:42:52,566 INFO L435 NwaCegarLoop]: 1407 mSDtfsCounter, 39 mSDsluCounter, 15395 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 16802 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:52,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 16802 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3345 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 07:42:52,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2025-03-08 07:42:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1341. [2025-03-08 07:42:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1326 states have (on average 1.490950226244344) internal successors, (1977), 1326 states have internal predecessors, (1977), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 07:42:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2003 transitions. [2025-03-08 07:42:52,588 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2003 transitions. Word has length 359 [2025-03-08 07:42:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:52,589 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 2003 transitions. [2025-03-08 07:42:52,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-08 07:42:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2003 transitions. [2025-03-08 07:42:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2025-03-08 07:42:52,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:52,591 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:52,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 07:42:52,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 07:42:52,792 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:52,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash -731034880, now seen corresponding path program 2 times [2025-03-08 07:42:52,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:52,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978026536] [2025-03-08 07:42:52,792 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 07:42:52,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:52,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 362 statements into 2 equivalence classes. [2025-03-08 07:42:52,850 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 278 of 362 statements. [2025-03-08 07:42:52,850 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 07:42:52,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:42:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:53,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978026536] [2025-03-08 07:42:53,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978026536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:42:53,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:42:53,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 07:42:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520739778] [2025-03-08 07:42:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:53,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 07:42:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:53,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 07:42:53,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 07:42:53,125 INFO L87 Difference]: Start difference. First operand 1341 states and 2003 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:53,478 INFO L93 Difference]: Finished difference Result 1345 states and 2007 transitions. [2025-03-08 07:42:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:42:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 362 [2025-03-08 07:42:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:53,482 INFO L225 Difference]: With dead ends: 1345 [2025-03-08 07:42:53,482 INFO L226 Difference]: Without dead ends: 1343 [2025-03-08 07:42:53,483 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 07:42:53,483 INFO L435 NwaCegarLoop]: 1395 mSDtfsCounter, 0 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4180 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:53,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4180 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:42:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2025-03-08 07:42:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2025-03-08 07:42:53,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1328 states have (on average 1.490210843373494) internal successors, (1979), 1328 states have internal predecessors, (1979), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 07:42:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2005 transitions. [2025-03-08 07:42:53,507 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2005 transitions. Word has length 362 [2025-03-08 07:42:53,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:53,507 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 2005 transitions. [2025-03-08 07:42:53,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:42:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2005 transitions. [2025-03-08 07:42:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2025-03-08 07:42:53,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:53,509 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:53,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 07:42:53,509 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:53,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1182564796, now seen corresponding path program 1 times [2025-03-08 07:42:53,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:53,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936566719] [2025-03-08 07:42:53,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:53,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:53,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 07:42:53,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 07:42:53,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:53,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:42:53,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936566719] [2025-03-08 07:42:53,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936566719] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562854476] [2025-03-08 07:42:53,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:53,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:53,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:53,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:42:53,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 07:42:54,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 07:42:54,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 07:42:54,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:54,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:54,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-08 07:42:54,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-08 07:42:54,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:42:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:42:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562854476] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:55,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:42:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2025-03-08 07:42:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898606798] [2025-03-08 07:42:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:42:55,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:42:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:42:55,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:42:55,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2025-03-08 07:42:55,856 INFO L87 Difference]: Start difference. First operand 1343 states and 2005 transitions. Second operand has 9 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:42:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:42:58,444 INFO L93 Difference]: Finished difference Result 2897 states and 4315 transitions. [2025-03-08 07:42:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:42:58,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 363 [2025-03-08 07:42:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:42:58,450 INFO L225 Difference]: With dead ends: 2897 [2025-03-08 07:42:58,450 INFO L226 Difference]: Without dead ends: 1872 [2025-03-08 07:42:58,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2025-03-08 07:42:58,453 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 2169 mSDsluCounter, 5154 mSDsCounter, 0 mSdLazyCounter, 5994 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 6038 SdHoareTripleChecker+Invalid, 6025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 07:42:58,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 6038 Invalid, 6025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 5994 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 07:42:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2025-03-08 07:42:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1569. [2025-03-08 07:42:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1545 states have (on average 1.4809061488673139) internal successors, (2288), 1545 states have internal predecessors, (2288), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 07:42:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2332 transitions. [2025-03-08 07:42:58,480 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2332 transitions. Word has length 363 [2025-03-08 07:42:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:42:58,480 INFO L471 AbstractCegarLoop]: Abstraction has 1569 states and 2332 transitions. [2025-03-08 07:42:58,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:42:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2332 transitions. [2025-03-08 07:42:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2025-03-08 07:42:58,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:42:58,483 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:58,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 07:42:58,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:58,688 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:42:58,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:42:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2009195767, now seen corresponding path program 1 times [2025-03-08 07:42:58,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:42:58,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273431607] [2025-03-08 07:42:58,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:58,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:42:58,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 07:42:58,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 07:42:58,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:58,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:42:58,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:42:58,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273431607] [2025-03-08 07:42:58,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273431607] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:42:58,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657102215] [2025-03-08 07:42:58,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:42:58,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:42:58,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:42:58,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:42:58,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 07:42:59,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 07:42:59,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 07:42:59,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:42:59,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:42:59,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 07:42:59,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:42:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-08 07:42:59,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:00,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657102215] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:00,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:00,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 8] total 14 [2025-03-08 07:43:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132364972] [2025-03-08 07:43:00,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:00,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:43:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:00,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:43:00,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-03-08 07:43:00,182 INFO L87 Difference]: Start difference. First operand 1569 states and 2332 transitions. Second operand has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:43:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:01,752 INFO L93 Difference]: Finished difference Result 3352 states and 4990 transitions. [2025-03-08 07:43:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:43:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 363 [2025-03-08 07:43:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:01,759 INFO L225 Difference]: With dead ends: 3352 [2025-03-08 07:43:01,759 INFO L226 Difference]: Without dead ends: 2455 [2025-03-08 07:43:01,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2025-03-08 07:43:01,761 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 3280 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:01,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 3383 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-08 07:43:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2025-03-08 07:43:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 1724. [2025-03-08 07:43:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1694 states have (on average 1.4787485242030696) internal successors, (2505), 1694 states have internal predecessors, (2505), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-08 07:43:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2561 transitions. [2025-03-08 07:43:01,798 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2561 transitions. Word has length 363 [2025-03-08 07:43:01,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:01,799 INFO L471 AbstractCegarLoop]: Abstraction has 1724 states and 2561 transitions. [2025-03-08 07:43:01,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:43:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2561 transitions. [2025-03-08 07:43:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2025-03-08 07:43:01,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:01,802 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:01,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 07:43:02,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 07:43:02,003 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:02,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1017850033, now seen corresponding path program 1 times [2025-03-08 07:43:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634821444] [2025-03-08 07:43:02,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:02,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:02,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 07:43:02,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 07:43:02,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:02,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:02,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:02,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634821444] [2025-03-08 07:43:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634821444] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:02,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035890333] [2025-03-08 07:43:02,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:02,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:02,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:02,249 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:02,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 07:43:02,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-03-08 07:43:02,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-03-08 07:43:02,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:02,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:02,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 07:43:02,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:02,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 07:43:02,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035890333] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:43:02,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 07:43:02,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2025-03-08 07:43:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523107658] [2025-03-08 07:43:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:02,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:43:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:02,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:43:02,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 07:43:02,866 INFO L87 Difference]: Start difference. First operand 1724 states and 2561 transitions. Second operand has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:03,792 INFO L93 Difference]: Finished difference Result 3907 states and 5800 transitions. [2025-03-08 07:43:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:43:03,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 363 [2025-03-08 07:43:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:03,800 INFO L225 Difference]: With dead ends: 3907 [2025-03-08 07:43:03,800 INFO L226 Difference]: Without dead ends: 2711 [2025-03-08 07:43:03,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:43:03,802 INFO L435 NwaCegarLoop]: 1362 mSDtfsCounter, 1216 mSDsluCounter, 3669 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 5031 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:03,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 5031 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 07:43:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2025-03-08 07:43:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 1806. [2025-03-08 07:43:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1776 states have (on average 1.4695945945945945) internal successors, (2610), 1776 states have internal predecessors, (2610), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-08 07:43:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2666 transitions. [2025-03-08 07:43:03,837 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2666 transitions. Word has length 363 [2025-03-08 07:43:03,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:03,837 INFO L471 AbstractCegarLoop]: Abstraction has 1806 states and 2666 transitions. [2025-03-08 07:43:03,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2666 transitions. [2025-03-08 07:43:03,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2025-03-08 07:43:03,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:03,839 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:03,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-08 07:43:04,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 07:43:04,040 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:04,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1801957726, now seen corresponding path program 1 times [2025-03-08 07:43:04,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:04,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345540899] [2025-03-08 07:43:04,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:04,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:04,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 364 statements into 1 equivalence classes. [2025-03-08 07:43:04,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 364 of 364 statements. [2025-03-08 07:43:04,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:04,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:04,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:04,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345540899] [2025-03-08 07:43:04,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345540899] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:04,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363925798] [2025-03-08 07:43:04,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:04,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:04,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:04,293 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:04,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 07:43:04,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 364 statements into 1 equivalence classes. [2025-03-08 07:43:04,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 364 of 364 statements. [2025-03-08 07:43:04,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:04,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:04,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 07:43:04,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-08 07:43:05,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363925798] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:05,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:05,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 8] total 14 [2025-03-08 07:43:05,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249334714] [2025-03-08 07:43:05,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:05,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:43:05,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:05,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:43:05,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-03-08 07:43:05,496 INFO L87 Difference]: Start difference. First operand 1806 states and 2666 transitions. Second operand has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:07,064 INFO L93 Difference]: Finished difference Result 3947 states and 5836 transitions. [2025-03-08 07:43:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:43:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 364 [2025-03-08 07:43:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:07,072 INFO L225 Difference]: With dead ends: 3947 [2025-03-08 07:43:07,072 INFO L226 Difference]: Without dead ends: 2769 [2025-03-08 07:43:07,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2025-03-08 07:43:07,074 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 2582 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:07,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 3376 Invalid, 3302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3290 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-08 07:43:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2025-03-08 07:43:07,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1891. [2025-03-08 07:43:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1861 states have (on average 1.4648038688876948) internal successors, (2726), 1861 states have internal predecessors, (2726), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-08 07:43:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2782 transitions. [2025-03-08 07:43:07,109 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2782 transitions. Word has length 364 [2025-03-08 07:43:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:07,109 INFO L471 AbstractCegarLoop]: Abstraction has 1891 states and 2782 transitions. [2025-03-08 07:43:07,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2782 transitions. [2025-03-08 07:43:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2025-03-08 07:43:07,111 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:07,112 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:07,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-08 07:43:07,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 07:43:07,312 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:07,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash 371366168, now seen corresponding path program 1 times [2025-03-08 07:43:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:07,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175234777] [2025-03-08 07:43:07,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:07,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:07,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 364 statements into 1 equivalence classes. [2025-03-08 07:43:07,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 364 of 364 statements. [2025-03-08 07:43:07,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:07,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:07,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:07,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175234777] [2025-03-08 07:43:07,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175234777] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:07,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905401355] [2025-03-08 07:43:07,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:07,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:07,587 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:07,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 07:43:08,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 364 statements into 1 equivalence classes. [2025-03-08 07:43:08,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 364 of 364 statements. [2025-03-08 07:43:08,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:08,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:08,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-08 07:43:08,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:08,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:08,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905401355] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:08,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:08,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 5] total 11 [2025-03-08 07:43:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872363691] [2025-03-08 07:43:08,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:08,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:43:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:08,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:43:08,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-08 07:43:08,882 INFO L87 Difference]: Start difference. First operand 1891 states and 2782 transitions. Second operand has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:43:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:10,443 INFO L93 Difference]: Finished difference Result 3814 states and 5632 transitions. [2025-03-08 07:43:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:43:10,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 364 [2025-03-08 07:43:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:10,453 INFO L225 Difference]: With dead ends: 3814 [2025-03-08 07:43:10,453 INFO L226 Difference]: Without dead ends: 2490 [2025-03-08 07:43:10,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-08 07:43:10,455 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 2572 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 3564 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 4821 SdHoareTripleChecker+Invalid, 3565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:10,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2578 Valid, 4821 Invalid, 3565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3564 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-08 07:43:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2025-03-08 07:43:10,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2476. [2025-03-08 07:43:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2448 states have (on average 1.46609477124183) internal successors, (3589), 2448 states have internal predecessors, (3589), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 07:43:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3641 transitions. [2025-03-08 07:43:10,496 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3641 transitions. Word has length 364 [2025-03-08 07:43:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:10,496 INFO L471 AbstractCegarLoop]: Abstraction has 2476 states and 3641 transitions. [2025-03-08 07:43:10,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:43:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3641 transitions. [2025-03-08 07:43:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2025-03-08 07:43:10,499 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:10,499 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:10,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-08 07:43:10,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 07:43:10,700 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:10,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash -79210851, now seen corresponding path program 1 times [2025-03-08 07:43:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:10,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225339174] [2025-03-08 07:43:10,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:10,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:10,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 364 statements into 1 equivalence classes. [2025-03-08 07:43:10,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 364 of 364 statements. [2025-03-08 07:43:10,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:10,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:10,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:10,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225339174] [2025-03-08 07:43:10,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225339174] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311284147] [2025-03-08 07:43:10,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:10,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:10,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:10,947 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:10,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 07:43:11,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 364 statements into 1 equivalence classes. [2025-03-08 07:43:11,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 364 of 364 statements. [2025-03-08 07:43:11,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:11,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:11,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 07:43:11,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-08 07:43:11,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:12,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311284147] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:12,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:12,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 12 [2025-03-08 07:43:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61988484] [2025-03-08 07:43:12,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:12,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:43:12,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:12,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:43:12,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-08 07:43:12,203 INFO L87 Difference]: Start difference. First operand 2476 states and 3641 transitions. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:13,262 INFO L93 Difference]: Finished difference Result 4196 states and 6178 transitions. [2025-03-08 07:43:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 07:43:13,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 364 [2025-03-08 07:43:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:13,266 INFO L225 Difference]: With dead ends: 4196 [2025-03-08 07:43:13,266 INFO L226 Difference]: Without dead ends: 2482 [2025-03-08 07:43:13,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-03-08 07:43:13,268 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 1343 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:13,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 2565 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 07:43:13,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2025-03-08 07:43:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2482. [2025-03-08 07:43:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2454 states have (on average 1.4657701711491442) internal successors, (3597), 2454 states have internal predecessors, (3597), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 07:43:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3649 transitions. [2025-03-08 07:43:13,306 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3649 transitions. Word has length 364 [2025-03-08 07:43:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:13,306 INFO L471 AbstractCegarLoop]: Abstraction has 2482 states and 3649 transitions. [2025-03-08 07:43:13,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3649 transitions. [2025-03-08 07:43:13,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2025-03-08 07:43:13,308 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:13,309 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:13,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-08 07:43:13,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:13,509 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:13,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:13,510 INFO L85 PathProgramCache]: Analyzing trace with hash -524026302, now seen corresponding path program 1 times [2025-03-08 07:43:13,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:13,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567597516] [2025-03-08 07:43:13,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:13,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:13,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 365 statements into 1 equivalence classes. [2025-03-08 07:43:13,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 365 of 365 statements. [2025-03-08 07:43:13,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:13,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:13,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:13,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567597516] [2025-03-08 07:43:13,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567597516] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:13,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38355813] [2025-03-08 07:43:13,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:13,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:13,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:13,722 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:13,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 07:43:14,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 365 statements into 1 equivalence classes. [2025-03-08 07:43:14,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 365 of 365 statements. [2025-03-08 07:43:14,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:14,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:14,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 131 conjuncts are in the unsatisfiable core [2025-03-08 07:43:14,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-08 07:43:15,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:15,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38355813] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:15,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:15,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 13] total 23 [2025-03-08 07:43:15,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401648739] [2025-03-08 07:43:15,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:15,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 07:43:15,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:15,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 07:43:15,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-03-08 07:43:15,308 INFO L87 Difference]: Start difference. First operand 2482 states and 3649 transitions. Second operand has 10 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:17,487 INFO L93 Difference]: Finished difference Result 5178 states and 7658 transitions. [2025-03-08 07:43:17,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 07:43:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 365 [2025-03-08 07:43:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:17,493 INFO L225 Difference]: With dead ends: 5178 [2025-03-08 07:43:17,494 INFO L226 Difference]: Without dead ends: 2506 [2025-03-08 07:43:17,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2025-03-08 07:43:17,497 INFO L435 NwaCegarLoop]: 1957 mSDtfsCounter, 1420 mSDsluCounter, 8146 mSDsCounter, 0 mSdLazyCounter, 5346 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 10103 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 5346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:17,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 10103 Invalid, 5386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 5346 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 07:43:17,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2025-03-08 07:43:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2025-03-08 07:43:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2478 states have (on average 1.4652945924132366) internal successors, (3631), 2478 states have internal predecessors, (3631), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 07:43:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3683 transitions. [2025-03-08 07:43:17,559 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3683 transitions. Word has length 365 [2025-03-08 07:43:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:17,559 INFO L471 AbstractCegarLoop]: Abstraction has 2506 states and 3683 transitions. [2025-03-08 07:43:17,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3683 transitions. [2025-03-08 07:43:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2025-03-08 07:43:17,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:17,563 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:17,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-08 07:43:17,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 07:43:17,764 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:17,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:17,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1875748961, now seen corresponding path program 1 times [2025-03-08 07:43:17,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:17,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880532511] [2025-03-08 07:43:17,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:17,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:17,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 365 statements into 1 equivalence classes. [2025-03-08 07:43:17,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 365 of 365 statements. [2025-03-08 07:43:17,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:17,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:18,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:18,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880532511] [2025-03-08 07:43:18,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880532511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:18,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625877157] [2025-03-08 07:43:18,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:18,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:18,008 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:18,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-08 07:43:18,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 365 statements into 1 equivalence classes. [2025-03-08 07:43:18,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 365 of 365 statements. [2025-03-08 07:43:18,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:18,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:18,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-08 07:43:18,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-08 07:43:19,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:19,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625877157] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:19,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:19,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 12] total 17 [2025-03-08 07:43:19,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164816040] [2025-03-08 07:43:19,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:19,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:43:19,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:19,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:43:19,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2025-03-08 07:43:19,143 INFO L87 Difference]: Start difference. First operand 2506 states and 3683 transitions. Second operand has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:19,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:19,633 INFO L93 Difference]: Finished difference Result 4246 states and 6248 transitions. [2025-03-08 07:43:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 07:43:19,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 365 [2025-03-08 07:43:19,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:19,638 INFO L225 Difference]: With dead ends: 4246 [2025-03-08 07:43:19,638 INFO L226 Difference]: Without dead ends: 2502 [2025-03-08 07:43:19,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2025-03-08 07:43:19,640 INFO L435 NwaCegarLoop]: 1392 mSDtfsCounter, 10 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:19,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5560 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 07:43:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2025-03-08 07:43:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2502. [2025-03-08 07:43:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2474 states have (on average 1.4652384801940177) internal successors, (3625), 2474 states have internal predecessors, (3625), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 07:43:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3677 transitions. [2025-03-08 07:43:19,679 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3677 transitions. Word has length 365 [2025-03-08 07:43:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:19,679 INFO L471 AbstractCegarLoop]: Abstraction has 2502 states and 3677 transitions. [2025-03-08 07:43:19,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 07:43:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3677 transitions. [2025-03-08 07:43:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2025-03-08 07:43:19,681 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:19,681 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:19,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-08 07:43:19,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:19,883 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:19,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1471550110, now seen corresponding path program 1 times [2025-03-08 07:43:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:19,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455134210] [2025-03-08 07:43:19,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:19,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:19,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 366 statements into 1 equivalence classes. [2025-03-08 07:43:19,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 366 of 366 statements. [2025-03-08 07:43:19,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:19,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:20,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455134210] [2025-03-08 07:43:20,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455134210] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:20,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394134538] [2025-03-08 07:43:20,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:20,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:20,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:20,141 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:20,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-08 07:43:20,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 366 statements into 1 equivalence classes. [2025-03-08 07:43:20,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 366 of 366 statements. [2025-03-08 07:43:20,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:20,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:20,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 93 conjuncts are in the unsatisfiable core [2025-03-08 07:43:20,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-08 07:43:20,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394134538] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:21,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 9] total 24 [2025-03-08 07:43:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515689905] [2025-03-08 07:43:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:21,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 07:43:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:21,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 07:43:21,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2025-03-08 07:43:21,405 INFO L87 Difference]: Start difference. First operand 2502 states and 3677 transitions. Second operand has 15 states, 15 states have (on average 21.733333333333334) internal successors, (326), 15 states have internal predecessors, (326), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:27,022 INFO L93 Difference]: Finished difference Result 6056 states and 8951 transitions. [2025-03-08 07:43:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 07:43:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.733333333333334) internal successors, (326), 15 states have internal predecessors, (326), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 366 [2025-03-08 07:43:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:27,028 INFO L225 Difference]: With dead ends: 6056 [2025-03-08 07:43:27,028 INFO L226 Difference]: Without dead ends: 4304 [2025-03-08 07:43:27,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 07:43:27,029 INFO L435 NwaCegarLoop]: 1862 mSDtfsCounter, 2257 mSDsluCounter, 17959 mSDsCounter, 0 mSdLazyCounter, 12155 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 19821 SdHoareTripleChecker+Invalid, 12274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 12155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:27,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 19821 Invalid, 12274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 12155 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2025-03-08 07:43:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2025-03-08 07:43:27,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 2835. [2025-03-08 07:43:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2786 states have (on average 1.4633883704235462) internal successors, (4077), 2786 states have internal predecessors, (4077), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-08 07:43:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4171 transitions. [2025-03-08 07:43:27,081 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4171 transitions. Word has length 366 [2025-03-08 07:43:27,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:27,082 INFO L471 AbstractCegarLoop]: Abstraction has 2835 states and 4171 transitions. [2025-03-08 07:43:27,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.733333333333334) internal successors, (326), 15 states have internal predecessors, (326), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4171 transitions. [2025-03-08 07:43:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2025-03-08 07:43:27,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:27,084 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:27,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-08 07:43:27,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:27,285 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:27,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:27,286 INFO L85 PathProgramCache]: Analyzing trace with hash -702125929, now seen corresponding path program 1 times [2025-03-08 07:43:27,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:27,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174848644] [2025-03-08 07:43:27,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:27,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:27,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 367 statements into 1 equivalence classes. [2025-03-08 07:43:27,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 367 of 367 statements. [2025-03-08 07:43:27,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:27,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:27,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174848644] [2025-03-08 07:43:27,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174848644] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421434573] [2025-03-08 07:43:27,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:27,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:27,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:27,516 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:27,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-08 07:43:28,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 367 statements into 1 equivalence classes. [2025-03-08 07:43:28,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 367 of 367 statements. [2025-03-08 07:43:28,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:28,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:28,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-08 07:43:28,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-08 07:43:28,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:28,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421434573] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:28,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:28,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2025-03-08 07:43:28,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815446287] [2025-03-08 07:43:28,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:28,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 07:43:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:28,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 07:43:28,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-03-08 07:43:28,931 INFO L87 Difference]: Start difference. First operand 2835 states and 4171 transitions. Second operand has 10 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:43:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:30,295 INFO L93 Difference]: Finished difference Result 4816 states and 7091 transitions. [2025-03-08 07:43:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:43:30,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 367 [2025-03-08 07:43:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:30,300 INFO L225 Difference]: With dead ends: 4816 [2025-03-08 07:43:30,300 INFO L226 Difference]: Without dead ends: 2841 [2025-03-08 07:43:30,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2025-03-08 07:43:30,302 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 3253 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3255 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:30,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3255 Valid, 3356 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 07:43:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2025-03-08 07:43:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2841. [2025-03-08 07:43:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2792 states have (on average 1.4613180515759312) internal successors, (4080), 2792 states have internal predecessors, (4080), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-08 07:43:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4174 transitions. [2025-03-08 07:43:30,356 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4174 transitions. Word has length 367 [2025-03-08 07:43:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:30,357 INFO L471 AbstractCegarLoop]: Abstraction has 2841 states and 4174 transitions. [2025-03-08 07:43:30,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:43:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4174 transitions. [2025-03-08 07:43:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2025-03-08 07:43:30,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:30,360 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:30,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-08 07:43:30,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:30,561 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:30,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash -706648971, now seen corresponding path program 1 times [2025-03-08 07:43:30,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:30,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484788420] [2025-03-08 07:43:30,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:30,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:30,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 368 statements into 1 equivalence classes. [2025-03-08 07:43:30,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 368 of 368 statements. [2025-03-08 07:43:30,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:30,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:30,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:30,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484788420] [2025-03-08 07:43:30,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484788420] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:30,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432612717] [2025-03-08 07:43:30,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:30,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:30,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:30,775 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:30,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-08 07:43:31,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 368 statements into 1 equivalence classes. [2025-03-08 07:43:31,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 368 of 368 statements. [2025-03-08 07:43:31,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:31,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:31,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-08 07:43:31,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-08 07:43:31,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432612717] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:32,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:32,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2025-03-08 07:43:32,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342160800] [2025-03-08 07:43:32,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:32,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 07:43:32,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:32,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 07:43:32,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-03-08 07:43:32,219 INFO L87 Difference]: Start difference. First operand 2841 states and 4174 transitions. Second operand has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:33,684 INFO L93 Difference]: Finished difference Result 4819 states and 7087 transitions. [2025-03-08 07:43:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:43:33,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 368 [2025-03-08 07:43:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:33,693 INFO L225 Difference]: With dead ends: 4819 [2025-03-08 07:43:33,693 INFO L226 Difference]: Without dead ends: 2844 [2025-03-08 07:43:33,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2025-03-08 07:43:33,696 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 4939 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 3343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:33,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4943 Valid, 3338 Invalid, 3343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3331 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 07:43:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2025-03-08 07:43:33,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2844. [2025-03-08 07:43:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2795 states have (on average 1.4608228980322004) internal successors, (4083), 2795 states have internal predecessors, (4083), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-08 07:43:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4177 transitions. [2025-03-08 07:43:33,766 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4177 transitions. Word has length 368 [2025-03-08 07:43:33,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:33,767 INFO L471 AbstractCegarLoop]: Abstraction has 2844 states and 4177 transitions. [2025-03-08 07:43:33,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4177 transitions. [2025-03-08 07:43:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2025-03-08 07:43:33,769 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:33,769 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:33,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-08 07:43:33,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:33,970 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:33,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash 725802922, now seen corresponding path program 1 times [2025-03-08 07:43:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:33,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813372264] [2025-03-08 07:43:33,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:34,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 369 statements into 1 equivalence classes. [2025-03-08 07:43:34,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 369 of 369 statements. [2025-03-08 07:43:34,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:34,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813372264] [2025-03-08 07:43:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813372264] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:34,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923663980] [2025-03-08 07:43:34,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:34,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:34,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:34,186 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:34,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-08 07:43:34,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 369 statements into 1 equivalence classes. [2025-03-08 07:43:34,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 369 of 369 statements. [2025-03-08 07:43:34,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:34,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:34,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-03-08 07:43:34,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-08 07:43:35,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:35,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923663980] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:35,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:35,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 7] total 17 [2025-03-08 07:43:35,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769599582] [2025-03-08 07:43:35,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:35,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 07:43:35,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:35,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 07:43:35,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-03-08 07:43:35,641 INFO L87 Difference]: Start difference. First operand 2844 states and 4177 transitions. Second operand has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:37,927 INFO L93 Difference]: Finished difference Result 4908 states and 7208 transitions. [2025-03-08 07:43:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 07:43:37,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 369 [2025-03-08 07:43:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:37,932 INFO L225 Difference]: With dead ends: 4908 [2025-03-08 07:43:37,932 INFO L226 Difference]: Without dead ends: 2850 [2025-03-08 07:43:37,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-03-08 07:43:37,935 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 1656 mSDsluCounter, 5012 mSDsCounter, 0 mSdLazyCounter, 5856 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 5862 SdHoareTripleChecker+Invalid, 5862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:37,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 5862 Invalid, 5862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5856 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 07:43:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2025-03-08 07:43:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2850. [2025-03-08 07:43:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2801 states have (on average 1.4576936808282757) internal successors, (4083), 2801 states have internal predecessors, (4083), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-08 07:43:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 4177 transitions. [2025-03-08 07:43:37,995 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 4177 transitions. Word has length 369 [2025-03-08 07:43:37,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:37,996 INFO L471 AbstractCegarLoop]: Abstraction has 2850 states and 4177 transitions. [2025-03-08 07:43:37,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 4177 transitions. [2025-03-08 07:43:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2025-03-08 07:43:37,998 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:37,999 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:38,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-08 07:43:38,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-08 07:43:38,200 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:38,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash 702706806, now seen corresponding path program 1 times [2025-03-08 07:43:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:38,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385281112] [2025-03-08 07:43:38,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:38,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:38,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 370 statements into 1 equivalence classes. [2025-03-08 07:43:38,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 370 of 370 statements. [2025-03-08 07:43:38,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:38,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:38,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385281112] [2025-03-08 07:43:38,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385281112] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847009929] [2025-03-08 07:43:38,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:38,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:38,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:38,414 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:38,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-08 07:43:38,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 370 statements into 1 equivalence classes. [2025-03-08 07:43:39,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 370 of 370 statements. [2025-03-08 07:43:39,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:39,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:39,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-08 07:43:39,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-08 07:43:39,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:39,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847009929] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:39,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:39,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 7] total 17 [2025-03-08 07:43:39,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367257194] [2025-03-08 07:43:39,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:39,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 07:43:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:39,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 07:43:39,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-03-08 07:43:39,774 INFO L87 Difference]: Start difference. First operand 2850 states and 4177 transitions. Second operand has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:41,998 INFO L93 Difference]: Finished difference Result 5191 states and 7601 transitions. [2025-03-08 07:43:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 07:43:41,998 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 370 [2025-03-08 07:43:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:42,003 INFO L225 Difference]: With dead ends: 5191 [2025-03-08 07:43:42,003 INFO L226 Difference]: Without dead ends: 2886 [2025-03-08 07:43:42,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-03-08 07:43:42,006 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 1688 mSDsluCounter, 4993 mSDsCounter, 0 mSdLazyCounter, 5814 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 5836 SdHoareTripleChecker+Invalid, 5819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:42,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 5836 Invalid, 5819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5814 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 07:43:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2025-03-08 07:43:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2025-03-08 07:43:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2837 states have (on average 1.4455410645047586) internal successors, (4101), 2837 states have internal predecessors, (4101), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-08 07:43:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 4195 transitions. [2025-03-08 07:43:42,060 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 4195 transitions. Word has length 370 [2025-03-08 07:43:42,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:42,060 INFO L471 AbstractCegarLoop]: Abstraction has 2886 states and 4195 transitions. [2025-03-08 07:43:42,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 4195 transitions. [2025-03-08 07:43:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2025-03-08 07:43:42,062 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:42,063 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:42,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-08 07:43:42,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-08 07:43:42,265 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:42,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:42,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1446225667, now seen corresponding path program 1 times [2025-03-08 07:43:42,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:42,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172350258] [2025-03-08 07:43:42,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:42,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:42,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 371 statements into 1 equivalence classes. [2025-03-08 07:43:42,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 371 of 371 statements. [2025-03-08 07:43:42,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:42,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:42,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:42,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172350258] [2025-03-08 07:43:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172350258] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:42,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255452139] [2025-03-08 07:43:42,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:42,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:42,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:42,473 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:42,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-08 07:43:43,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 371 statements into 1 equivalence classes. [2025-03-08 07:43:43,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 371 of 371 statements. [2025-03-08 07:43:43,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:43,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:43,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-08 07:43:43,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-08 07:43:43,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255452139] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:44,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:44,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 10] total 20 [2025-03-08 07:43:44,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974030636] [2025-03-08 07:43:44,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:44,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 07:43:44,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:44,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 07:43:44,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-03-08 07:43:44,018 INFO L87 Difference]: Start difference. First operand 2886 states and 4195 transitions. Second operand has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:45,377 INFO L93 Difference]: Finished difference Result 4889 states and 7114 transitions. [2025-03-08 07:43:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:43:45,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 371 [2025-03-08 07:43:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:45,382 INFO L225 Difference]: With dead ends: 4889 [2025-03-08 07:43:45,382 INFO L226 Difference]: Without dead ends: 2888 [2025-03-08 07:43:45,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2025-03-08 07:43:45,384 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 1649 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:45,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 3339 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 07:43:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2025-03-08 07:43:45,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2888. [2025-03-08 07:43:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2839 states have (on average 1.4448749559704122) internal successors, (4102), 2839 states have internal predecessors, (4102), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-08 07:43:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4196 transitions. [2025-03-08 07:43:45,467 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4196 transitions. Word has length 371 [2025-03-08 07:43:45,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:45,468 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 4196 transitions. [2025-03-08 07:43:45,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-08 07:43:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4196 transitions. [2025-03-08 07:43:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2025-03-08 07:43:45,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:45,470 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:45,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-08 07:43:45,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:45,671 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:45,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1852568413, now seen corresponding path program 1 times [2025-03-08 07:43:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:45,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625620718] [2025-03-08 07:43:45,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:45,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:45,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 372 statements into 1 equivalence classes. [2025-03-08 07:43:45,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 372 of 372 statements. [2025-03-08 07:43:45,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:45,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 07:43:45,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:45,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625620718] [2025-03-08 07:43:45,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625620718] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:45,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603024013] [2025-03-08 07:43:45,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:45,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:45,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:45,889 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:43:45,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-08 07:43:46,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 372 statements into 1 equivalence classes. [2025-03-08 07:43:46,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 372 of 372 statements. [2025-03-08 07:43:46,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:46,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:46,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-08 07:43:46,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-08 07:43:47,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:43:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 07:43:47,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603024013] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 07:43:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 07:43:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 19 [2025-03-08 07:43:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460345223] [2025-03-08 07:43:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:47,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:43:47,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:47,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:43:47,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-03-08 07:43:47,306 INFO L87 Difference]: Start difference. First operand 2888 states and 4196 transitions. Second operand has 9 states, 9 states have (on average 36.888888888888886) internal successors, (332), 9 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)