./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0df39af5bb0da8e3087f1622629197ff07999529140b31d9eb8577cc8820a051 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:27:31,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:27:31,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:27:31,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:27:31,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:27:31,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:27:31,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:27:31,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:27:31,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:27:31,466 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:27:31,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:27:31,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:27:31,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:27:31,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:27:31,467 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:27:31,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:27:31,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:27:31,467 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:27:31,468 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:27:31,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:27:31,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:27:31,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:27:31,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:27:31,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:27:31,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:27:31,469 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:27:31,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:27:31,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:27:31,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:27:31,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:27:31,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:27:31,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:27:31,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:27:31,470 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0df39af5bb0da8e3087f1622629197ff07999529140b31d9eb8577cc8820a051 [2025-03-16 19:27:31,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:27:31,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:27:31,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:27:31,705 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:27:31,705 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:27:31,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2025-03-16 19:27:32,882 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8714a7a/7fd9b293279b49c9af1950d76b5e38ce/FLAG783884dc3 [2025-03-16 19:27:33,159 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:27:33,161 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2025-03-16 19:27:33,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8714a7a/7fd9b293279b49c9af1950d76b5e38ce/FLAG783884dc3 [2025-03-16 19:27:33,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8714a7a/7fd9b293279b49c9af1950d76b5e38ce [2025-03-16 19:27:33,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:27:33,456 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:27:33,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:27:33,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:27:33,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:27:33,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b88f9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33, skipping insertion in model container [2025-03-16 19:27:33,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:27:33,645 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7105,7118] [2025-03-16 19:27:33,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:27:33,711 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:27:33,758 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7105,7118] [2025-03-16 19:27:33,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:27:33,813 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:27:33,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33 WrapperNode [2025-03-16 19:27:33,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:27:33,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:27:33,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:27:33,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:27:33,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,846 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 721 [2025-03-16 19:27:33,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:27:33,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:27:33,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:27:33,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:27:33,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,875 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:27:33,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,885 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:27:33,897 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:27:33,898 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:27:33,898 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:27:33,898 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (1/1) ... [2025-03-16 19:27:33,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:27:33,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:27:33,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:27:33,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:27:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:27:33,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:27:33,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:27:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:27:34,028 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:27:34,029 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:27:34,498 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1111: havoc main_~node1____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:34,498 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc main_~node4____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L203: havoc main_~node3__m3~0#1;havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L600: havoc main_~node3____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L749: havoc main_~node1____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L403: havoc main_~node2__m2~2#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L486: havoc main_~node4____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L421: havoc main_~node3__m3~2#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L686: havoc main_~node2____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L224: havoc main_~node4__m4~0#1;havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L439: havoc main_~node4__m4~2#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1067: havoc main_~node2____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L572: havoc main_~node3____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L161: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L658: havoc main_~node2____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1023: havoc main_~node3____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L380: havoc main_~node1__m1~2#1;havoc main_~__tmp_2~0#1, main_~assert__arg~1#1;havoc main_~check__tmp~1#1;havoc main_~node4__m4~1#1;havoc main_~node3__m3~1#1;havoc main_~node2__m2~1#1;havoc main_~node1__m1~1#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1;havoc main_~node4____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L182: havoc main_~node2__m2~0#1;havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L777: havoc main_~node1____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:34,499 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L514: havoc main_~node4____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:34,529 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2025-03-16 19:27:34,530 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:27:34,541 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:27:34,542 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:27:34,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:27:34 BoogieIcfgContainer [2025-03-16 19:27:34,542 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:27:34,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:27:34,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:27:34,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:27:34,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:27:33" (1/3) ... [2025-03-16 19:27:34,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a1d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:27:34, skipping insertion in model container [2025-03-16 19:27:34,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:33" (2/3) ... [2025-03-16 19:27:34,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a1d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:27:34, skipping insertion in model container [2025-03-16 19:27:34,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:27:34" (3/3) ... [2025-03-16 19:27:34,551 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2025-03-16 19:27:34,561 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:27:34,565 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c that has 1 procedures, 178 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-16 19:27:34,602 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:27:34,612 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;@66b7d691, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:27:34,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:27:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 176 states have (on average 1.7215909090909092) internal successors, (303), 177 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:34,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 19:27:34,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:34,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:34,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:34,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash -179207189, now seen corresponding path program 1 times [2025-03-16 19:27:34,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041479782] [2025-03-16 19:27:34,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:34,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 19:27:34,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 19:27:34,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:34,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041479782] [2025-03-16 19:27:35,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041479782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:35,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:35,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395518943] [2025-03-16 19:27:35,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:35,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:27:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:35,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:27:35,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:27:35,137 INFO L87 Difference]: Start difference. First operand has 178 states, 176 states have (on average 1.7215909090909092) internal successors, (303), 177 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:35,326 INFO L93 Difference]: Finished difference Result 638 states and 1033 transitions. [2025-03-16 19:27:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:27:35,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-16 19:27:35,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:35,341 INFO L225 Difference]: With dead ends: 638 [2025-03-16 19:27:35,342 INFO L226 Difference]: Without dead ends: 539 [2025-03-16 19:27:35,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:35,349 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 1458 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:35,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1826 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:27:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-03-16 19:27:35,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 273. [2025-03-16 19:27:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5147058823529411) internal successors, (412), 272 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 412 transitions. [2025-03-16 19:27:35,401 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 412 transitions. Word has length 63 [2025-03-16 19:27:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:35,401 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 412 transitions. [2025-03-16 19:27:35,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 412 transitions. [2025-03-16 19:27:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 19:27:35,402 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:35,404 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:35,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:27:35,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:35,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:35,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494779, now seen corresponding path program 1 times [2025-03-16 19:27:35,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:35,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041646139] [2025-03-16 19:27:35,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:35,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:35,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 19:27:35,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 19:27:35,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:35,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:35,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:35,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041646139] [2025-03-16 19:27:35,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041646139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:35,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:35,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:35,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656015036] [2025-03-16 19:27:35,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:35,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:27:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:35,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:27:35,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:27:35,652 INFO L87 Difference]: Start difference. First operand 273 states and 412 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:35,799 INFO L93 Difference]: Finished difference Result 1011 states and 1564 transitions. [2025-03-16 19:27:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:27:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-16 19:27:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:35,803 INFO L225 Difference]: With dead ends: 1011 [2025-03-16 19:27:35,803 INFO L226 Difference]: Without dead ends: 799 [2025-03-16 19:27:35,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:27:35,806 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 818 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:35,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 748 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:27:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2025-03-16 19:27:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 793. [2025-03-16 19:27:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.5366161616161615) internal successors, (1217), 792 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1217 transitions. [2025-03-16 19:27:35,839 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1217 transitions. Word has length 64 [2025-03-16 19:27:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:35,839 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1217 transitions. [2025-03-16 19:27:35,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:35,839 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1217 transitions. [2025-03-16 19:27:35,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 19:27:35,843 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:35,843 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:35,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:27:35,843 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:35,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash -794862134, now seen corresponding path program 1 times [2025-03-16 19:27:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235187781] [2025-03-16 19:27:35,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:35,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 19:27:35,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 19:27:35,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:35,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:36,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235187781] [2025-03-16 19:27:36,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235187781] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:36,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:36,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:36,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469200139] [2025-03-16 19:27:36,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:36,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:36,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:36,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:36,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:36,028 INFO L87 Difference]: Start difference. First operand 793 states and 1217 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:36,236 INFO L93 Difference]: Finished difference Result 2015 states and 3139 transitions. [2025-03-16 19:27:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:36,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-16 19:27:36,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:36,243 INFO L225 Difference]: With dead ends: 2015 [2025-03-16 19:27:36,243 INFO L226 Difference]: Without dead ends: 1321 [2025-03-16 19:27:36,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:36,248 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 933 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:36,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 251 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:36,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2025-03-16 19:27:36,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1319. [2025-03-16 19:27:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.547040971168437) internal successors, (2039), 1318 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2039 transitions. [2025-03-16 19:27:36,306 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2039 transitions. Word has length 65 [2025-03-16 19:27:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:36,306 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 2039 transitions. [2025-03-16 19:27:36,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:36,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2039 transitions. [2025-03-16 19:27:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 19:27:36,310 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:36,310 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:36,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:27:36,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:36,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1823154058, now seen corresponding path program 1 times [2025-03-16 19:27:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961556838] [2025-03-16 19:27:36,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:36,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:36,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 19:27:36,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 19:27:36,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:36,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961556838] [2025-03-16 19:27:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961556838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:36,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:36,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:36,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067792779] [2025-03-16 19:27:36,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:36,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:36,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:36,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:36,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:36,449 INFO L87 Difference]: Start difference. First operand 1319 states and 2039 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:36,652 INFO L93 Difference]: Finished difference Result 3646 states and 5686 transitions. [2025-03-16 19:27:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-16 19:27:36,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:36,661 INFO L225 Difference]: With dead ends: 3646 [2025-03-16 19:27:36,661 INFO L226 Difference]: Without dead ends: 2399 [2025-03-16 19:27:36,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:36,665 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 959 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:36,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 249 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2025-03-16 19:27:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2397. [2025-03-16 19:27:36,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2396 states have (on average 1.5505008347245408) internal successors, (3715), 2396 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3715 transitions. [2025-03-16 19:27:36,713 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3715 transitions. Word has length 65 [2025-03-16 19:27:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:36,713 INFO L471 AbstractCegarLoop]: Abstraction has 2397 states and 3715 transitions. [2025-03-16 19:27:36,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3715 transitions. [2025-03-16 19:27:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 19:27:36,715 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:36,715 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:36,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:27:36,715 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:36,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 619785506, now seen corresponding path program 1 times [2025-03-16 19:27:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:36,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171236657] [2025-03-16 19:27:36,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:36,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:36,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 19:27:36,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 19:27:36,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:36,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:36,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171236657] [2025-03-16 19:27:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171236657] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:36,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:36,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223647111] [2025-03-16 19:27:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:36,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:36,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:36,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:36,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:36,838 INFO L87 Difference]: Start difference. First operand 2397 states and 3715 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:37,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:37,022 INFO L93 Difference]: Finished difference Result 6923 states and 10787 transitions. [2025-03-16 19:27:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:37,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-16 19:27:37,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:37,036 INFO L225 Difference]: With dead ends: 6923 [2025-03-16 19:27:37,036 INFO L226 Difference]: Without dead ends: 4575 [2025-03-16 19:27:37,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:37,043 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 985 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:37,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 247 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:27:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2025-03-16 19:27:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4573. [2025-03-16 19:27:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4572 states have (on average 1.5485564304461943) internal successors, (7080), 4572 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7080 transitions. [2025-03-16 19:27:37,147 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7080 transitions. Word has length 65 [2025-03-16 19:27:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:37,147 INFO L471 AbstractCegarLoop]: Abstraction has 4573 states and 7080 transitions. [2025-03-16 19:27:37,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7080 transitions. [2025-03-16 19:27:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 19:27:37,149 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:37,150 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:37,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:27:37,150 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:37,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1057012786, now seen corresponding path program 1 times [2025-03-16 19:27:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145742017] [2025-03-16 19:27:37,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:37,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 19:27:37,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 19:27:37,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:37,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145742017] [2025-03-16 19:27:37,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145742017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:37,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:37,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:37,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508346617] [2025-03-16 19:27:37,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:37,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:37,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:37,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:37,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:37,264 INFO L87 Difference]: Start difference. First operand 4573 states and 7080 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:37,504 INFO L93 Difference]: Finished difference Result 12539 states and 19465 transitions. [2025-03-16 19:27:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:37,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-16 19:27:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:37,535 INFO L225 Difference]: With dead ends: 12539 [2025-03-16 19:27:37,535 INFO L226 Difference]: Without dead ends: 7999 [2025-03-16 19:27:37,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:37,545 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 1011 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:37,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 245 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2025-03-16 19:27:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 7997. [2025-03-16 19:27:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7997 states, 7996 states have (on average 1.539144572286143) internal successors, (12307), 7996 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7997 states to 7997 states and 12307 transitions. [2025-03-16 19:27:37,705 INFO L78 Accepts]: Start accepts. Automaton has 7997 states and 12307 transitions. Word has length 65 [2025-03-16 19:27:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:37,705 INFO L471 AbstractCegarLoop]: Abstraction has 7997 states and 12307 transitions. [2025-03-16 19:27:37,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 7997 states and 12307 transitions. [2025-03-16 19:27:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 19:27:37,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:37,707 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:37,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:27:37,707 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:37,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2012453145, now seen corresponding path program 1 times [2025-03-16 19:27:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:37,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218680087] [2025-03-16 19:27:37,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:37,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 19:27:37,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 19:27:37,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:37,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:37,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:37,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218680087] [2025-03-16 19:27:37,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218680087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:37,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:37,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:27:37,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826086733] [2025-03-16 19:27:37,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:37,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:37,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:37,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:37,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:37,960 INFO L87 Difference]: Start difference. First operand 7997 states and 12307 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:37,997 INFO L93 Difference]: Finished difference Result 8223 states and 12644 transitions. [2025-03-16 19:27:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:37,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-16 19:27:37,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:38,022 INFO L225 Difference]: With dead ends: 8223 [2025-03-16 19:27:38,023 INFO L226 Difference]: Without dead ends: 8221 [2025-03-16 19:27:38,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:38,027 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:38,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 966 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2025-03-16 19:27:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 8221. [2025-03-16 19:27:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8221 states, 8220 states have (on average 1.5244525547445256) internal successors, (12531), 8220 states have internal predecessors, (12531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8221 states to 8221 states and 12531 transitions. [2025-03-16 19:27:38,202 INFO L78 Accepts]: Start accepts. Automaton has 8221 states and 12531 transitions. Word has length 66 [2025-03-16 19:27:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:38,202 INFO L471 AbstractCegarLoop]: Abstraction has 8221 states and 12531 transitions. [2025-03-16 19:27:38,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8221 states and 12531 transitions. [2025-03-16 19:27:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 19:27:38,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:38,204 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:38,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:27:38,204 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:38,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2043235977, now seen corresponding path program 1 times [2025-03-16 19:27:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355806221] [2025-03-16 19:27:38,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:38,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 19:27:38,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 19:27:38,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:38,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:38,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:38,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355806221] [2025-03-16 19:27:38,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355806221] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:38,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:38,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 19:27:38,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907479667] [2025-03-16 19:27:38,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:38,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 19:27:38,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:38,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 19:27:38,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:38,554 INFO L87 Difference]: Start difference. First operand 8221 states and 12531 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:39,056 INFO L93 Difference]: Finished difference Result 10930 states and 16523 transitions. [2025-03-16 19:27:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 19:27:39,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-16 19:27:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:39,078 INFO L225 Difference]: With dead ends: 10930 [2025-03-16 19:27:39,078 INFO L226 Difference]: Without dead ends: 9638 [2025-03-16 19:27:39,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-03-16 19:27:39,084 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 990 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:39,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 754 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:27:39,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9638 states. [2025-03-16 19:27:39,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9638 to 8221. [2025-03-16 19:27:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8221 states, 8220 states have (on average 1.524330900243309) internal successors, (12530), 8220 states have internal predecessors, (12530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8221 states to 8221 states and 12530 transitions. [2025-03-16 19:27:39,209 INFO L78 Accepts]: Start accepts. Automaton has 8221 states and 12530 transitions. Word has length 67 [2025-03-16 19:27:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:39,209 INFO L471 AbstractCegarLoop]: Abstraction has 8221 states and 12530 transitions. [2025-03-16 19:27:39,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8221 states and 12530 transitions. [2025-03-16 19:27:39,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 19:27:39,213 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:39,214 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:39,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:27:39,214 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:39,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:39,215 INFO L85 PathProgramCache]: Analyzing trace with hash -391824887, now seen corresponding path program 1 times [2025-03-16 19:27:39,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:39,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656791026] [2025-03-16 19:27:39,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:39,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:39,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 19:27:39,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 19:27:39,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:39,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:39,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:39,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656791026] [2025-03-16 19:27:39,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656791026] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:39,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:39,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 19:27:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255226981] [2025-03-16 19:27:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:39,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 19:27:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:39,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 19:27:39,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:39,504 INFO L87 Difference]: Start difference. First operand 8221 states and 12530 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:40,062 INFO L93 Difference]: Finished difference Result 14702 states and 22224 transitions. [2025-03-16 19:27:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 19:27:40,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-16 19:27:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:40,080 INFO L225 Difference]: With dead ends: 14702 [2025-03-16 19:27:40,081 INFO L226 Difference]: Without dead ends: 11125 [2025-03-16 19:27:40,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2025-03-16 19:27:40,088 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 1127 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:40,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 795 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:27:40,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11125 states. [2025-03-16 19:27:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11125 to 8389. [2025-03-16 19:27:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8389 states, 8388 states have (on average 1.5213400095374345) internal successors, (12761), 8388 states have internal predecessors, (12761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8389 states to 8389 states and 12761 transitions. [2025-03-16 19:27:40,226 INFO L78 Accepts]: Start accepts. Automaton has 8389 states and 12761 transitions. Word has length 67 [2025-03-16 19:27:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:40,226 INFO L471 AbstractCegarLoop]: Abstraction has 8389 states and 12761 transitions. [2025-03-16 19:27:40,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 8389 states and 12761 transitions. [2025-03-16 19:27:40,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 19:27:40,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:40,228 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:40,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:27:40,228 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:40,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1755276681, now seen corresponding path program 1 times [2025-03-16 19:27:40,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:40,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662257882] [2025-03-16 19:27:40,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:40,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:40,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 19:27:40,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 19:27:40,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:40,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:40,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:40,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662257882] [2025-03-16 19:27:40,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662257882] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:40,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:40,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 19:27:40,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383329338] [2025-03-16 19:27:40,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:40,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 19:27:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:40,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 19:27:40,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:40,433 INFO L87 Difference]: Start difference. First operand 8389 states and 12761 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:40,987 INFO L93 Difference]: Finished difference Result 18374 states and 27742 transitions. [2025-03-16 19:27:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 19:27:40,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-16 19:27:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:41,010 INFO L225 Difference]: With dead ends: 18374 [2025-03-16 19:27:41,010 INFO L226 Difference]: Without dead ends: 12534 [2025-03-16 19:27:41,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2025-03-16 19:27:41,020 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 678 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:41,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 845 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:27:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12534 states. [2025-03-16 19:27:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12534 to 8577. [2025-03-16 19:27:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8577 states, 8576 states have (on average 1.5162080223880596) internal successors, (13003), 8576 states have internal predecessors, (13003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8577 states to 8577 states and 13003 transitions. [2025-03-16 19:27:41,179 INFO L78 Accepts]: Start accepts. Automaton has 8577 states and 13003 transitions. Word has length 67 [2025-03-16 19:27:41,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:41,179 INFO L471 AbstractCegarLoop]: Abstraction has 8577 states and 13003 transitions. [2025-03-16 19:27:41,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 8577 states and 13003 transitions. [2025-03-16 19:27:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 19:27:41,182 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:41,182 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:41,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:27:41,183 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:41,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:41,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1063792375, now seen corresponding path program 1 times [2025-03-16 19:27:41,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:41,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238857128] [2025-03-16 19:27:41,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:41,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:41,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 19:27:41,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 19:27:41,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:41,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:41,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:41,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238857128] [2025-03-16 19:27:41,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238857128] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:41,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:41,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 19:27:41,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711701086] [2025-03-16 19:27:41,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:41,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 19:27:41,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:41,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 19:27:41,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:41,435 INFO L87 Difference]: Start difference. First operand 8577 states and 13003 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:42,028 INFO L93 Difference]: Finished difference Result 21669 states and 32662 transitions. [2025-03-16 19:27:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 19:27:42,029 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-16 19:27:42,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:42,045 INFO L225 Difference]: With dead ends: 21669 [2025-03-16 19:27:42,046 INFO L226 Difference]: Without dead ends: 13754 [2025-03-16 19:27:42,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2025-03-16 19:27:42,053 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 1018 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:42,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 948 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:27:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13754 states. [2025-03-16 19:27:42,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13754 to 8727. [2025-03-16 19:27:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8727 states, 8726 states have (on average 1.5092826037130416) internal successors, (13170), 8726 states have internal predecessors, (13170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8727 states to 8727 states and 13170 transitions. [2025-03-16 19:27:42,174 INFO L78 Accepts]: Start accepts. Automaton has 8727 states and 13170 transitions. Word has length 67 [2025-03-16 19:27:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:42,174 INFO L471 AbstractCegarLoop]: Abstraction has 8727 states and 13170 transitions. [2025-03-16 19:27:42,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 8727 states and 13170 transitions. [2025-03-16 19:27:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 19:27:42,177 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:42,177 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:42,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:27:42,177 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:42,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1426294823, now seen corresponding path program 1 times [2025-03-16 19:27:42,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735564023] [2025-03-16 19:27:42,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:42,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:27:42,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:27:42,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:42,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:42,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:42,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735564023] [2025-03-16 19:27:42,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735564023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:42,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:42,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:42,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526950073] [2025-03-16 19:27:42,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:42,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:27:42,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:42,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:27:42,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:27:42,298 INFO L87 Difference]: Start difference. First operand 8727 states and 13170 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:42,353 INFO L93 Difference]: Finished difference Result 22787 states and 34564 transitions. [2025-03-16 19:27:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:27:42,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-16 19:27:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:42,375 INFO L225 Difference]: With dead ends: 22787 [2025-03-16 19:27:42,377 INFO L226 Difference]: Without dead ends: 15137 [2025-03-16 19:27:42,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:27:42,389 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 170 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:42,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 604 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2025-03-16 19:27:42,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15031. [2025-03-16 19:27:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 1.4990019960079841) internal successors, (22530), 15030 states have internal predecessors, (22530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 22530 transitions. [2025-03-16 19:27:42,598 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 22530 transitions. Word has length 68 [2025-03-16 19:27:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:42,598 INFO L471 AbstractCegarLoop]: Abstraction has 15031 states and 22530 transitions. [2025-03-16 19:27:42,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 22530 transitions. [2025-03-16 19:27:42,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 19:27:42,601 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:42,601 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:42,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:27:42,601 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:42,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:42,601 INFO L85 PathProgramCache]: Analyzing trace with hash 634624393, now seen corresponding path program 1 times [2025-03-16 19:27:42,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:42,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269869993] [2025-03-16 19:27:42,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:42,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:42,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:27:42,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:27:42,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:42,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:42,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:42,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269869993] [2025-03-16 19:27:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269869993] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:42,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:42,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:27:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855125905] [2025-03-16 19:27:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:42,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:27:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:42,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:27:42,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:27:42,644 INFO L87 Difference]: Start difference. First operand 15031 states and 22530 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:42,710 INFO L93 Difference]: Finished difference Result 32637 states and 49092 transitions. [2025-03-16 19:27:42,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:27:42,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-16 19:27:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:42,743 INFO L225 Difference]: With dead ends: 32637 [2025-03-16 19:27:42,743 INFO L226 Difference]: Without dead ends: 20053 [2025-03-16 19:27:42,757 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 [2025-03-16 19:27:42,757 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 176 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:42,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 465 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20053 states. [2025-03-16 19:27:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20053 to 20003. [2025-03-16 19:27:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20003 states, 20002 states have (on average 1.487001299870013) internal successors, (29743), 20002 states have internal predecessors, (29743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20003 states to 20003 states and 29743 transitions. [2025-03-16 19:27:42,957 INFO L78 Accepts]: Start accepts. Automaton has 20003 states and 29743 transitions. Word has length 68 [2025-03-16 19:27:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:42,957 INFO L471 AbstractCegarLoop]: Abstraction has 20003 states and 29743 transitions. [2025-03-16 19:27:42,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 20003 states and 29743 transitions. [2025-03-16 19:27:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 19:27:42,960 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:42,960 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:42,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:27:42,960 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:42,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:42,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1924957304, now seen corresponding path program 1 times [2025-03-16 19:27:42,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:42,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512559462] [2025-03-16 19:27:42,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:42,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:27:42,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:27:42,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:42,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:43,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512559462] [2025-03-16 19:27:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512559462] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:43,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:43,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:27:43,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995945072] [2025-03-16 19:27:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:43,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:27:43,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:43,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:27:43,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:27:43,043 INFO L87 Difference]: Start difference. First operand 20003 states and 29743 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:43,115 INFO L93 Difference]: Finished difference Result 29046 states and 43113 transitions. [2025-03-16 19:27:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:27:43,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-16 19:27:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:43,145 INFO L225 Difference]: With dead ends: 29046 [2025-03-16 19:27:43,146 INFO L226 Difference]: Without dead ends: 22328 [2025-03-16 19:27:43,157 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 [2025-03-16 19:27:43,157 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 144 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:43,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 555 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:43,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22328 states. [2025-03-16 19:27:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22328 to 19442. [2025-03-16 19:27:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19442 states, 19441 states have (on average 1.4613960187233166) internal successors, (28411), 19441 states have internal predecessors, (28411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19442 states to 19442 states and 28411 transitions. [2025-03-16 19:27:43,347 INFO L78 Accepts]: Start accepts. Automaton has 19442 states and 28411 transitions. Word has length 68 [2025-03-16 19:27:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:43,348 INFO L471 AbstractCegarLoop]: Abstraction has 19442 states and 28411 transitions. [2025-03-16 19:27:43,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 19442 states and 28411 transitions. [2025-03-16 19:27:43,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 19:27:43,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:43,350 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:43,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:27:43,350 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:43,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash 540165865, now seen corresponding path program 1 times [2025-03-16 19:27:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010586110] [2025-03-16 19:27:43,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:43,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:27:43,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:27:43,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:43,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:43,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:43,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010586110] [2025-03-16 19:27:43,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010586110] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:43,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:43,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:27:43,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546197123] [2025-03-16 19:27:43,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:43,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:27:43,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:43,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:27:43,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:27:43,388 INFO L87 Difference]: Start difference. First operand 19442 states and 28411 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:43,461 INFO L93 Difference]: Finished difference Result 34466 states and 50435 transitions. [2025-03-16 19:27:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:27:43,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-16 19:27:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:43,500 INFO L225 Difference]: With dead ends: 34466 [2025-03-16 19:27:43,500 INFO L226 Difference]: Without dead ends: 22526 [2025-03-16 19:27:43,579 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 [2025-03-16 19:27:43,580 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 154 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:43,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 497 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:43,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22526 states. [2025-03-16 19:27:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22526 to 22224. [2025-03-16 19:27:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22224 states, 22223 states have (on average 1.4353597624083156) internal successors, (31898), 22223 states have internal predecessors, (31898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22224 states to 22224 states and 31898 transitions. [2025-03-16 19:27:43,856 INFO L78 Accepts]: Start accepts. Automaton has 22224 states and 31898 transitions. Word has length 68 [2025-03-16 19:27:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:43,856 INFO L471 AbstractCegarLoop]: Abstraction has 22224 states and 31898 transitions. [2025-03-16 19:27:43,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 22224 states and 31898 transitions. [2025-03-16 19:27:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 19:27:43,859 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:43,859 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:43,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 19:27:43,859 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:43,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:43,859 INFO L85 PathProgramCache]: Analyzing trace with hash 705973480, now seen corresponding path program 1 times [2025-03-16 19:27:43,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:43,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062449067] [2025-03-16 19:27:43,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:43,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:43,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:27:43,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:27:43,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:43,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:43,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062449067] [2025-03-16 19:27:43,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062449067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:43,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:43,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:27:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331239503] [2025-03-16 19:27:43,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:43,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:27:43,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:43,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:27:43,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:27:43,913 INFO L87 Difference]: Start difference. First operand 22224 states and 31898 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:44,031 INFO L93 Difference]: Finished difference Result 44869 states and 64240 transitions. [2025-03-16 19:27:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:27:44,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-16 19:27:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:44,070 INFO L225 Difference]: With dead ends: 44869 [2025-03-16 19:27:44,071 INFO L226 Difference]: Without dead ends: 25147 [2025-03-16 19:27:44,088 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 [2025-03-16 19:27:44,090 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 164 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:44,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 462 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25147 states. [2025-03-16 19:27:44,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25147 to 24901. [2025-03-16 19:27:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24901 states, 24900 states have (on average 1.398433734939759) internal successors, (34821), 24900 states have internal predecessors, (34821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24901 states to 24901 states and 34821 transitions. [2025-03-16 19:27:44,365 INFO L78 Accepts]: Start accepts. Automaton has 24901 states and 34821 transitions. Word has length 68 [2025-03-16 19:27:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:44,366 INFO L471 AbstractCegarLoop]: Abstraction has 24901 states and 34821 transitions. [2025-03-16 19:27:44,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 24901 states and 34821 transitions. [2025-03-16 19:27:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 19:27:44,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:44,369 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:44,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 19:27:44,369 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:44,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:44,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1397821142, now seen corresponding path program 1 times [2025-03-16 19:27:44,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:44,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046137743] [2025-03-16 19:27:44,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:44,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:44,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 19:27:44,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 19:27:44,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:44,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:44,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046137743] [2025-03-16 19:27:44,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046137743] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:44,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:44,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:44,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671525635] [2025-03-16 19:27:44,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:44,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:27:44,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:44,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:27:44,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:27:44,538 INFO L87 Difference]: Start difference. First operand 24901 states and 34821 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:44,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:44,670 INFO L93 Difference]: Finished difference Result 46030 states and 64884 transitions. [2025-03-16 19:27:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:27:44,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-16 19:27:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:44,726 INFO L225 Difference]: With dead ends: 46030 [2025-03-16 19:27:44,726 INFO L226 Difference]: Without dead ends: 43040 [2025-03-16 19:27:44,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:44,741 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 1111 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:44,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1125 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43040 states. [2025-03-16 19:27:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43040 to 27844. [2025-03-16 19:27:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27844 states, 27843 states have (on average 1.3989871781058076) internal successors, (38952), 27843 states have internal predecessors, (38952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38952 transitions. [2025-03-16 19:27:45,093 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38952 transitions. Word has length 69 [2025-03-16 19:27:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:45,093 INFO L471 AbstractCegarLoop]: Abstraction has 27844 states and 38952 transitions. [2025-03-16 19:27:45,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38952 transitions. [2025-03-16 19:27:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 19:27:45,095 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:45,095 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:45,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 19:27:45,096 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:45,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1121134806, now seen corresponding path program 1 times [2025-03-16 19:27:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:45,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618221831] [2025-03-16 19:27:45,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:45,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 19:27:45,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 19:27:45,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:45,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:45,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:45,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618221831] [2025-03-16 19:27:45,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618221831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:45,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:45,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:45,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995523430] [2025-03-16 19:27:45,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:45,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:27:45,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:45,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:27:45,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:27:45,172 INFO L87 Difference]: Start difference. First operand 27844 states and 38952 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:45,387 INFO L93 Difference]: Finished difference Result 52521 states and 74051 transitions. [2025-03-16 19:27:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:27:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-16 19:27:45,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:45,446 INFO L225 Difference]: With dead ends: 52521 [2025-03-16 19:27:45,447 INFO L226 Difference]: Without dead ends: 45907 [2025-03-16 19:27:45,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:45,465 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 1033 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:45,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1205 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:27:45,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45907 states. [2025-03-16 19:27:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45907 to 34373. [2025-03-16 19:27:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34373 states, 34372 states have (on average 1.3991330152449668) internal successors, (48091), 34372 states have internal predecessors, (48091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34373 states to 34373 states and 48091 transitions. [2025-03-16 19:27:45,861 INFO L78 Accepts]: Start accepts. Automaton has 34373 states and 48091 transitions. Word has length 69 [2025-03-16 19:27:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:45,861 INFO L471 AbstractCegarLoop]: Abstraction has 34373 states and 48091 transitions. [2025-03-16 19:27:45,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 34373 states and 48091 transitions. [2025-03-16 19:27:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 19:27:45,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:45,863 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:45,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 19:27:45,863 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:45,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash 535898632, now seen corresponding path program 1 times [2025-03-16 19:27:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696666071] [2025-03-16 19:27:45,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:45,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 19:27:45,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 19:27:45,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:45,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:45,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696666071] [2025-03-16 19:27:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696666071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:45,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083791467] [2025-03-16 19:27:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:45,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:27:45,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:45,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:27:45,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:27:45,946 INFO L87 Difference]: Start difference. First operand 34373 states and 48091 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:46,216 INFO L93 Difference]: Finished difference Result 62446 states and 88024 transitions. [2025-03-16 19:27:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:27:46,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-16 19:27:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:46,293 INFO L225 Difference]: With dead ends: 62446 [2025-03-16 19:27:46,293 INFO L226 Difference]: Without dead ends: 52352 [2025-03-16 19:27:46,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:46,318 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 1078 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:46,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 1296 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:27:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52352 states. [2025-03-16 19:27:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52352 to 41437. [2025-03-16 19:27:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41437 states, 41436 states have (on average 1.4011970267400329) internal successors, (58060), 41436 states have internal predecessors, (58060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41437 states to 41437 states and 58060 transitions. [2025-03-16 19:27:46,949 INFO L78 Accepts]: Start accepts. Automaton has 41437 states and 58060 transitions. Word has length 69 [2025-03-16 19:27:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:46,949 INFO L471 AbstractCegarLoop]: Abstraction has 41437 states and 58060 transitions. [2025-03-16 19:27:46,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 41437 states and 58060 transitions. [2025-03-16 19:27:46,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 19:27:46,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:46,951 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:46,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 19:27:46,951 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:46,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1355745642, now seen corresponding path program 1 times [2025-03-16 19:27:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688015819] [2025-03-16 19:27:46,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:46,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 19:27:46,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 19:27:46,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:46,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688015819] [2025-03-16 19:27:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688015819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:47,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119892150] [2025-03-16 19:27:47,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:47,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:27:47,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:47,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:27:47,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:27:47,052 INFO L87 Difference]: Start difference. First operand 41437 states and 58060 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:47,413 INFO L93 Difference]: Finished difference Result 71178 states and 100264 transitions. [2025-03-16 19:27:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:27:47,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-16 19:27:47,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:47,483 INFO L225 Difference]: With dead ends: 71178 [2025-03-16 19:27:47,483 INFO L226 Difference]: Without dead ends: 60737 [2025-03-16 19:27:47,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:27:47,497 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 1087 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:47,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1157 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:27:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60737 states. [2025-03-16 19:27:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60737 to 45935. [2025-03-16 19:27:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45935 states, 45934 states have (on average 1.4016414856097879) internal successors, (64383), 45934 states have internal predecessors, (64383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45935 states to 45935 states and 64383 transitions. [2025-03-16 19:27:48,243 INFO L78 Accepts]: Start accepts. Automaton has 45935 states and 64383 transitions. Word has length 69 [2025-03-16 19:27:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:48,243 INFO L471 AbstractCegarLoop]: Abstraction has 45935 states and 64383 transitions. [2025-03-16 19:27:48,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 45935 states and 64383 transitions. [2025-03-16 19:27:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-16 19:27:48,246 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:48,247 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:48,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 19:27:48,247 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:48,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash 871711208, now seen corresponding path program 1 times [2025-03-16 19:27:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:48,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050638272] [2025-03-16 19:27:48,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:48,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:48,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-16 19:27:48,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-16 19:27:48,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:48,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:48,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050638272] [2025-03-16 19:27:48,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050638272] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:48,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:48,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715376844] [2025-03-16 19:27:48,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:48,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:27:48,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:48,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:27:48,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:48,331 INFO L87 Difference]: Start difference. First operand 45935 states and 64383 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:49,010 INFO L93 Difference]: Finished difference Result 135930 states and 189047 transitions. [2025-03-16 19:27:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:27:49,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-03-16 19:27:49,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:49,147 INFO L225 Difference]: With dead ends: 135930 [2025-03-16 19:27:49,147 INFO L226 Difference]: Without dead ends: 118900 [2025-03-16 19:27:49,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-03-16 19:27:49,183 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 1608 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:49,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 456 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:27:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118900 states. [2025-03-16 19:27:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118900 to 46097. [2025-03-16 19:27:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46097 states, 46096 states have (on average 1.4009024644220758) internal successors, (64576), 46096 states have internal predecessors, (64576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46097 states to 46097 states and 64576 transitions. [2025-03-16 19:27:50,239 INFO L78 Accepts]: Start accepts. Automaton has 46097 states and 64576 transitions. Word has length 74 [2025-03-16 19:27:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:50,239 INFO L471 AbstractCegarLoop]: Abstraction has 46097 states and 64576 transitions. [2025-03-16 19:27:50,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 46097 states and 64576 transitions. [2025-03-16 19:27:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-16 19:27:50,242 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:50,242 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:50,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 19:27:50,242 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:50,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1894647851, now seen corresponding path program 1 times [2025-03-16 19:27:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:50,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921255284] [2025-03-16 19:27:50,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:50,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-16 19:27:50,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-16 19:27:50,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:50,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:50,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921255284] [2025-03-16 19:27:50,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921255284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:50,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:50,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656722051] [2025-03-16 19:27:50,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:50,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:27:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:50,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:27:50,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:50,346 INFO L87 Difference]: Start difference. First operand 46097 states and 64576 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:51,209 INFO L93 Difference]: Finished difference Result 143942 states and 201251 transitions. [2025-03-16 19:27:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:27:51,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-03-16 19:27:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:51,365 INFO L225 Difference]: With dead ends: 143942 [2025-03-16 19:27:51,365 INFO L226 Difference]: Without dead ends: 121484 [2025-03-16 19:27:51,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-03-16 19:27:51,384 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 1766 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:51,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 469 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:27:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121484 states. [2025-03-16 19:27:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121484 to 46201. [2025-03-16 19:27:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46201 states, 46200 states have (on average 1.4004545454545454) internal successors, (64701), 46200 states have internal predecessors, (64701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46201 states to 46201 states and 64701 transitions. [2025-03-16 19:27:52,272 INFO L78 Accepts]: Start accepts. Automaton has 46201 states and 64701 transitions. Word has length 74 [2025-03-16 19:27:52,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:52,272 INFO L471 AbstractCegarLoop]: Abstraction has 46201 states and 64701 transitions. [2025-03-16 19:27:52,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 46201 states and 64701 transitions. [2025-03-16 19:27:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-16 19:27:52,277 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:52,277 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:52,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-16 19:27:52,278 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:52,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1324661673, now seen corresponding path program 1 times [2025-03-16 19:27:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:52,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218070520] [2025-03-16 19:27:52,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:52,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:52,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-16 19:27:52,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-16 19:27:52,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:52,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:52,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:52,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218070520] [2025-03-16 19:27:52,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218070520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:52,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:52,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:52,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843166351] [2025-03-16 19:27:52,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:52,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:27:52,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:52,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:27:52,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:52,432 INFO L87 Difference]: Start difference. First operand 46201 states and 64701 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:53,028 INFO L93 Difference]: Finished difference Result 108666 states and 150682 transitions. [2025-03-16 19:27:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:27:53,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-03-16 19:27:53,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:53,155 INFO L225 Difference]: With dead ends: 108666 [2025-03-16 19:27:53,155 INFO L226 Difference]: Without dead ends: 99868 [2025-03-16 19:27:53,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-03-16 19:27:53,192 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 1394 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:53,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 448 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:27:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99868 states. [2025-03-16 19:27:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99868 to 46450. [2025-03-16 19:27:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46450 states, 46449 states have (on average 1.3991905100217443) internal successors, (64991), 46449 states have internal predecessors, (64991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46450 states to 46450 states and 64991 transitions. [2025-03-16 19:27:54,140 INFO L78 Accepts]: Start accepts. Automaton has 46450 states and 64991 transitions. Word has length 74 [2025-03-16 19:27:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:54,140 INFO L471 AbstractCegarLoop]: Abstraction has 46450 states and 64991 transitions. [2025-03-16 19:27:54,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 46450 states and 64991 transitions. [2025-03-16 19:27:54,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-16 19:27:54,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:54,144 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:54,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 19:27:54,144 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:54,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash 377412138, now seen corresponding path program 1 times [2025-03-16 19:27:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310511623] [2025-03-16 19:27:54,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:54,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-16 19:27:54,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-16 19:27:54,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:54,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:54,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:54,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310511623] [2025-03-16 19:27:54,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310511623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:54,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:54,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:27:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004286212] [2025-03-16 19:27:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:54,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:27:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:54,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:27:54,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:54,214 INFO L87 Difference]: Start difference. First operand 46450 states and 64991 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:54,677 INFO L93 Difference]: Finished difference Result 114626 states and 159606 transitions. [2025-03-16 19:27:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:27:54,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-03-16 19:27:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:54,783 INFO L225 Difference]: With dead ends: 114626 [2025-03-16 19:27:54,783 INFO L226 Difference]: Without dead ends: 87398 [2025-03-16 19:27:54,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-03-16 19:27:54,826 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 1229 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:54,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 402 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87398 states. [2025-03-16 19:27:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87398 to 46500. [2025-03-16 19:27:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46500 states, 46499 states have (on average 1.3989763220714424) internal successors, (65051), 46499 states have internal predecessors, (65051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46500 states to 46500 states and 65051 transitions. [2025-03-16 19:27:55,792 INFO L78 Accepts]: Start accepts. Automaton has 46500 states and 65051 transitions. Word has length 74 [2025-03-16 19:27:55,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:55,792 INFO L471 AbstractCegarLoop]: Abstraction has 46500 states and 65051 transitions. [2025-03-16 19:27:55,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 46500 states and 65051 transitions. [2025-03-16 19:27:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-16 19:27:55,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:55,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:55,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-16 19:27:55,797 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:55,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1292844234, now seen corresponding path program 1 times [2025-03-16 19:27:55,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:55,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029928278] [2025-03-16 19:27:55,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:55,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:55,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-16 19:27:55,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-16 19:27:55,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:55,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:56,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:56,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029928278] [2025-03-16 19:27:56,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029928278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:56,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:56,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-16 19:27:56,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005153835] [2025-03-16 19:27:56,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:56,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 19:27:56,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:56,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 19:27:56,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-03-16 19:27:56,411 INFO L87 Difference]: Start difference. First operand 46500 states and 65051 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:57,286 INFO L93 Difference]: Finished difference Result 85371 states and 119460 transitions. [2025-03-16 19:27:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 19:27:57,286 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2025-03-16 19:27:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:57,378 INFO L225 Difference]: With dead ends: 85371 [2025-03-16 19:27:57,379 INFO L226 Difference]: Without dead ends: 79429 [2025-03-16 19:27:57,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2025-03-16 19:27:57,407 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 1584 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:57,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 1748 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79429 states. [2025-03-16 19:27:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79429 to 46513. [2025-03-16 19:27:58,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46513 states, 46512 states have (on average 1.3987143102855177) internal successors, (65057), 46512 states have internal predecessors, (65057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46513 states to 46513 states and 65057 transitions. [2025-03-16 19:27:58,300 INFO L78 Accepts]: Start accepts. Automaton has 46513 states and 65057 transitions. Word has length 76 [2025-03-16 19:27:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:58,300 INFO L471 AbstractCegarLoop]: Abstraction has 46513 states and 65057 transitions. [2025-03-16 19:27:58,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand 46513 states and 65057 transitions. [2025-03-16 19:27:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-16 19:27:58,304 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:58,304 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:58,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-16 19:27:58,304 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:58,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1344181236, now seen corresponding path program 1 times [2025-03-16 19:27:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:58,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980278568] [2025-03-16 19:27:58,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:58,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:58,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-16 19:27:58,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-16 19:27:58,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:58,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:58,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:58,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980278568] [2025-03-16 19:27:58,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980278568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:58,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:58,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-16 19:27:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087319183] [2025-03-16 19:27:58,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:58,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-16 19:27:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:58,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-16 19:27:58,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-16 19:27:58,819 INFO L87 Difference]: Start difference. First operand 46513 states and 65057 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:59,736 INFO L93 Difference]: Finished difference Result 131286 states and 183344 transitions. [2025-03-16 19:27:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 19:27:59,736 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2025-03-16 19:27:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:59,892 INFO L225 Difference]: With dead ends: 131286 [2025-03-16 19:27:59,892 INFO L226 Difference]: Without dead ends: 126110 [2025-03-16 19:27:59,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2025-03-16 19:27:59,934 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 1692 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:59,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 2143 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:28:00,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126110 states. [2025-03-16 19:28:00,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126110 to 45830. [2025-03-16 19:28:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45830 states, 45829 states have (on average 1.399375940998058) internal successors, (64132), 45829 states have internal predecessors, (64132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45830 states to 45830 states and 64132 transitions. [2025-03-16 19:28:01,023 INFO L78 Accepts]: Start accepts. Automaton has 45830 states and 64132 transitions. Word has length 76 [2025-03-16 19:28:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:01,023 INFO L471 AbstractCegarLoop]: Abstraction has 45830 states and 64132 transitions. [2025-03-16 19:28:01,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:01,023 INFO L276 IsEmpty]: Start isEmpty. Operand 45830 states and 64132 transitions. [2025-03-16 19:28:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-16 19:28:01,028 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:01,028 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:28:01,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-16 19:28:01,028 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:01,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2146400371, now seen corresponding path program 1 times [2025-03-16 19:28:01,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:01,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83213203] [2025-03-16 19:28:01,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:01,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:01,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-16 19:28:01,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-16 19:28:01,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:01,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:01,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83213203] [2025-03-16 19:28:01,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83213203] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:01,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:01,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-16 19:28:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418477345] [2025-03-16 19:28:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:01,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 19:28:01,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:01,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 19:28:01,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-03-16 19:28:01,565 INFO L87 Difference]: Start difference. First operand 45830 states and 64132 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:02,421 INFO L93 Difference]: Finished difference Result 99794 states and 139791 transitions. [2025-03-16 19:28:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 19:28:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2025-03-16 19:28:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:02,532 INFO L225 Difference]: With dead ends: 99794 [2025-03-16 19:28:02,532 INFO L226 Difference]: Without dead ends: 86602 [2025-03-16 19:28:02,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2025-03-16 19:28:02,567 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 1319 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:02,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 2045 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:28:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86602 states. [2025-03-16 19:28:03,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86602 to 45789. [2025-03-16 19:28:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45789 states, 45788 states have (on average 1.3995588363763432) internal successors, (64083), 45788 states have internal predecessors, (64083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45789 states to 45789 states and 64083 transitions. [2025-03-16 19:28:03,479 INFO L78 Accepts]: Start accepts. Automaton has 45789 states and 64083 transitions. Word has length 76 [2025-03-16 19:28:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:03,479 INFO L471 AbstractCegarLoop]: Abstraction has 45789 states and 64083 transitions. [2025-03-16 19:28:03,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 45789 states and 64083 transitions. [2025-03-16 19:28:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-16 19:28:03,484 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:03,484 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:28:03,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-16 19:28:03,484 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:03,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:03,484 INFO L85 PathProgramCache]: Analyzing trace with hash -229009001, now seen corresponding path program 1 times [2025-03-16 19:28:03,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:03,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213045381] [2025-03-16 19:28:03,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:03,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:03,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 19:28:03,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 19:28:03,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:03,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:03,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213045381] [2025-03-16 19:28:03,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213045381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:03,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:28:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285602594] [2025-03-16 19:28:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:03,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:28:03,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:03,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:28:03,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:03,532 INFO L87 Difference]: Start difference. First operand 45789 states and 64083 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:03,951 INFO L93 Difference]: Finished difference Result 92413 states and 129510 transitions. [2025-03-16 19:28:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:28:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2025-03-16 19:28:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:04,018 INFO L225 Difference]: With dead ends: 92413 [2025-03-16 19:28:04,019 INFO L226 Difference]: Without dead ends: 61644 [2025-03-16 19:28:04,040 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 [2025-03-16 19:28:04,041 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 182 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:04,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 364 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:28:04,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61644 states. [2025-03-16 19:28:04,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61644 to 41594. [2025-03-16 19:28:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41594 states, 41593 states have (on average 1.4004760416416224) internal successors, (58250), 41593 states have internal predecessors, (58250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41594 states to 41594 states and 58250 transitions. [2025-03-16 19:28:04,652 INFO L78 Accepts]: Start accepts. Automaton has 41594 states and 58250 transitions. Word has length 77 [2025-03-16 19:28:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:04,652 INFO L471 AbstractCegarLoop]: Abstraction has 41594 states and 58250 transitions. [2025-03-16 19:28:04,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 41594 states and 58250 transitions. [2025-03-16 19:28:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-16 19:28:04,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:04,657 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:28:04,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-16 19:28:04,657 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:04,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:04,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1323674738, now seen corresponding path program 1 times [2025-03-16 19:28:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:04,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607736004] [2025-03-16 19:28:04,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:04,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-16 19:28:04,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-16 19:28:04,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:04,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:04,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:04,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607736004] [2025-03-16 19:28:04,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607736004] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:04,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:04,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:28:04,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168241778] [2025-03-16 19:28:04,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:04,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:28:04,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:04,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:28:04,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:04,694 INFO L87 Difference]: Start difference. First operand 41594 states and 58250 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:04,885 INFO L93 Difference]: Finished difference Result 88669 states and 124290 transitions. [2025-03-16 19:28:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:28:04,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-03-16 19:28:04,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:04,953 INFO L225 Difference]: With dead ends: 88669 [2025-03-16 19:28:04,953 INFO L226 Difference]: Without dead ends: 61388 [2025-03-16 19:28:04,984 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 [2025-03-16 19:28:04,985 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 182 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:04,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 362 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:28:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61388 states. [2025-03-16 19:28:05,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61388 to 61174. [2025-03-16 19:28:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61174 states, 61173 states have (on average 1.403936377159858) internal successors, (85883), 61173 states have internal predecessors, (85883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61174 states to 61174 states and 85883 transitions. [2025-03-16 19:28:05,720 INFO L78 Accepts]: Start accepts. Automaton has 61174 states and 85883 transitions. Word has length 80 [2025-03-16 19:28:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:05,721 INFO L471 AbstractCegarLoop]: Abstraction has 61174 states and 85883 transitions. [2025-03-16 19:28:05,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 61174 states and 85883 transitions. [2025-03-16 19:28:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:28:05,740 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:05,740 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 19:28:05,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-16 19:28:05,741 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:05,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:05,741 INFO L85 PathProgramCache]: Analyzing trace with hash -451508173, now seen corresponding path program 1 times [2025-03-16 19:28:05,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:05,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574537266] [2025-03-16 19:28:05,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:05,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:28:05,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:28:05,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:05,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:05,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:05,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574537266] [2025-03-16 19:28:05,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574537266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:05,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:28:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881003988] [2025-03-16 19:28:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:05,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:28:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:05,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:28:05,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:05,812 INFO L87 Difference]: Start difference. First operand 61174 states and 85883 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:06,054 INFO L93 Difference]: Finished difference Result 129158 states and 182532 transitions. [2025-03-16 19:28:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:28:06,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:28:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:06,155 INFO L225 Difference]: With dead ends: 129158 [2025-03-16 19:28:06,155 INFO L226 Difference]: Without dead ends: 93846 [2025-03-16 19:28:06,198 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 [2025-03-16 19:28:06,199 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 126 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:06,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 513 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:28:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93846 states. [2025-03-16 19:28:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93846 to 88841. [2025-03-16 19:28:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88841 states, 88840 states have (on average 1.4013957676722197) internal successors, (124500), 88840 states have internal predecessors, (124500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88841 states to 88841 states and 124500 transitions. [2025-03-16 19:28:07,615 INFO L78 Accepts]: Start accepts. Automaton has 88841 states and 124500 transitions. Word has length 90 [2025-03-16 19:28:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:07,616 INFO L471 AbstractCegarLoop]: Abstraction has 88841 states and 124500 transitions. [2025-03-16 19:28:07,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 88841 states and 124500 transitions. [2025-03-16 19:28:07,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-16 19:28:07,630 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:07,630 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 19:28:07,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-16 19:28:07,631 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:07,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1394847731, now seen corresponding path program 1 times [2025-03-16 19:28:07,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:07,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894889024] [2025-03-16 19:28:07,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:07,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:07,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-16 19:28:07,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-16 19:28:07,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:07,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:07,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894889024] [2025-03-16 19:28:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894889024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:28:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077046903] [2025-03-16 19:28:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:07,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:28:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:07,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:28:07,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:28:07,736 INFO L87 Difference]: Start difference. First operand 88841 states and 124500 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:08,957 INFO L93 Difference]: Finished difference Result 259731 states and 365017 transitions. [2025-03-16 19:28:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:28:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2025-03-16 19:28:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:09,169 INFO L225 Difference]: With dead ends: 259731 [2025-03-16 19:28:09,169 INFO L226 Difference]: Without dead ends: 177129 [2025-03-16 19:28:09,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2025-03-16 19:28:09,214 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 1653 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:09,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 451 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:28:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177129 states. [2025-03-16 19:28:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177129 to 101102. [2025-03-16 19:28:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101102 states, 101101 states have (on average 1.4040711763484042) internal successors, (141953), 101101 states have internal predecessors, (141953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101102 states to 101102 states and 141953 transitions. [2025-03-16 19:28:10,968 INFO L78 Accepts]: Start accepts. Automaton has 101102 states and 141953 transitions. Word has length 96 [2025-03-16 19:28:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:10,969 INFO L471 AbstractCegarLoop]: Abstraction has 101102 states and 141953 transitions. [2025-03-16 19:28:10,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 101102 states and 141953 transitions. [2025-03-16 19:28:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-16 19:28:10,982 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:10,982 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 19:28:10,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-16 19:28:10,982 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:10,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1881281184, now seen corresponding path program 1 times [2025-03-16 19:28:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:10,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544911167] [2025-03-16 19:28:10,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:10,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-16 19:28:10,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-16 19:28:10,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:10,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:11,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:11,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544911167] [2025-03-16 19:28:11,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544911167] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:11,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:11,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:28:11,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52476267] [2025-03-16 19:28:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:11,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:28:11,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:11,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:28:11,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:28:11,058 INFO L87 Difference]: Start difference. First operand 101102 states and 141953 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:12,018 INFO L93 Difference]: Finished difference Result 339977 states and 478344 transitions. [2025-03-16 19:28:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:28:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2025-03-16 19:28:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:12,820 INFO L225 Difference]: With dead ends: 339977 [2025-03-16 19:28:12,820 INFO L226 Difference]: Without dead ends: 274143 [2025-03-16 19:28:12,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2025-03-16 19:28:12,881 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 1516 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:12,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 440 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:28:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274143 states. [2025-03-16 19:28:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274143 to 155212. [2025-03-16 19:28:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155212 states, 155211 states have (on average 1.4172513546075987) internal successors, (219973), 155211 states have internal predecessors, (219973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155212 states to 155212 states and 219973 transitions. [2025-03-16 19:28:15,608 INFO L78 Accepts]: Start accepts. Automaton has 155212 states and 219973 transitions. Word has length 97 [2025-03-16 19:28:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:15,609 INFO L471 AbstractCegarLoop]: Abstraction has 155212 states and 219973 transitions. [2025-03-16 19:28:15,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 155212 states and 219973 transitions. [2025-03-16 19:28:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-16 19:28:15,628 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:15,629 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 19:28:15,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-16 19:28:15,629 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:15,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash 691364111, now seen corresponding path program 1 times [2025-03-16 19:28:15,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022375278] [2025-03-16 19:28:15,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:15,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 19:28:15,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 19:28:15,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:15,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:28:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022375278] [2025-03-16 19:28:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022375278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:15,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:28:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307544479] [2025-03-16 19:28:15,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:15,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:28:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:15,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:28:15,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:15,666 INFO L87 Difference]: Start difference. First operand 155212 states and 219973 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:16,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:16,511 INFO L93 Difference]: Finished difference Result 248457 states and 351961 transitions. [2025-03-16 19:28:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:28:16,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2025-03-16 19:28:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:16,701 INFO L225 Difference]: With dead ends: 248457 [2025-03-16 19:28:16,702 INFO L226 Difference]: Without dead ends: 144938 [2025-03-16 19:28:16,788 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 [2025-03-16 19:28:16,789 INFO L435 NwaCegarLoop]: 397 mSDtfsCounter, 161 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:16,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 605 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:28:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144938 states.