./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-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 9e29b1c17273501647988c2dcf7c62baca572c01c9f2bd474ce3ab9b8d1b7b68 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:33:15,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:33:15,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:33:15,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:33:15,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:33:15,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:33:15,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:33:15,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:33:15,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:33:15,570 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:33:15,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:33:15,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:33:15,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:33:15,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:33:15,572 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:33:15,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:33:15,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:33:15,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:33:15,573 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 -> 9e29b1c17273501647988c2dcf7c62baca572c01c9f2bd474ce3ab9b8d1b7b68 [2025-03-08 06:33:15,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:33:15,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:33:15,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:33:15,823 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:33:15,823 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:33:15,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-08 06:33:17,058 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4fb7e45/048fc57013fb4d28aa03bf3d8e2c3553/FLAGba678e508 [2025-03-08 06:33:17,339 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:33:17,343 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-08 06:33:17,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4fb7e45/048fc57013fb4d28aa03bf3d8e2c3553/FLAGba678e508 [2025-03-08 06:33:17,378 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4fb7e45/048fc57013fb4d28aa03bf3d8e2c3553 [2025-03-08 06:33:17,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:33:17,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:33:17,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:33:17,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:33:17,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:33:17,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f53bfda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17, skipping insertion in model container [2025-03-08 06:33:17,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:33:17,642 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_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13867,13880] [2025-03-08 06:33:17,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:33:17,701 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:33:17,771 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_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13867,13880] [2025-03-08 06:33:17,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:33:17,814 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:33:17,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17 WrapperNode [2025-03-08 06:33:17,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:33:17,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:33:17,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:33:17,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:33:17,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,876 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1455 [2025-03-08 06:33:17,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:33:17,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:33:17,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:33:17,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:33:17,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,921 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]. [2025-03-08 06:33:17,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,937 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:33:17,965 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:33:17,966 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:33:17,966 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:33:17,967 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (1/1) ... [2025-03-08 06:33:17,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:33:17,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:33:17,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:33:18,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:33:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:33:18,132 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:33:18,133 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:33:19,050 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L730: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2025-03-08 06:33:19,051 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L575: havoc main_~node3__newmax~0#1; [2025-03-08 06:33:19,051 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L483: havoc main_~node1__newmax~0#1;havoc main_~init__r121~0#1, main_~init__r131~0#1, main_~init__r141~0#1, main_~init__r211~0#1, main_~init__r231~0#1, main_~init__r241~0#1, main_~init__r311~0#1, main_~init__r321~0#1, main_~init__r341~0#1, main_~init__r411~0#1, main_~init__r421~0#1, main_~init__r431~0#1, main_~init__r122~0#1, main_~init__tmp~0#1, main_~init__r132~0#1, main_~init__tmp___0~0#1, main_~init__r142~0#1, main_~init__tmp___1~0#1, main_~init__r212~0#1, main_~init__tmp___2~0#1, main_~init__r232~0#1, main_~init__tmp___3~0#1, main_~init__r242~0#1, main_~init__tmp___4~0#1, main_~init__r312~0#1, main_~init__tmp___5~0#1, main_~init__r322~0#1, main_~init__tmp___6~0#1, main_~init__r342~0#1, main_~init__tmp___7~0#1, main_~init__r412~0#1, main_~init__tmp___8~0#1, main_~init__r422~0#1, main_~init__tmp___9~0#1, main_~init__r432~0#1, main_~init__tmp___10~0#1, main_~init__r123~0#1, main_~init__tmp___11~0#1, main_~init__r133~0#1, main_~init__tmp___12~0#1, main_~init__r143~0#1, main_~init__tmp___13~0#1, main_~init__r213~0#1, main_~init__tmp___14~0#1, main_~init__r233~0#1, main_~init__tmp___15~0#1, main_~init__r243~0#1, main_~init__tmp___16~0#1, main_~init__r313~0#1, main_~init__tmp___17~0#1, main_~init__r323~0#1, main_~init__tmp___18~0#1, main_~init__r343~0#1, main_~init__tmp___19~0#1, main_~init__r413~0#1, main_~init__tmp___20~0#1, main_~init__r423~0#1, main_~init__tmp___21~0#1, main_~init__r433~0#1, main_~init__tmp___22~0#1, main_~init__tmp___23~0#1; [2025-03-08 06:33:19,051 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1409: havoc main_~node1____CPAchecker_TMP_2~0#1;havoc main_~node1____CPAchecker_TMP_1~0#1;havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-08 06:33:19,051 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1244: havoc main_~node2____CPAchecker_TMP_2~0#1;havoc main_~node2____CPAchecker_TMP_1~0#1;havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-08 06:33:19,051 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1079: havoc main_~node3____CPAchecker_TMP_2~0#1;havoc main_~node3____CPAchecker_TMP_1~0#1;havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-08 06:33:19,051 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L914: havoc main_~node4____CPAchecker_TMP_2~0#1;havoc main_~node4____CPAchecker_TMP_1~0#1;havoc main_~node4____CPAchecker_TMP_0~0#1; [2025-03-08 06:33:19,051 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L621: havoc main_~node4__newmax~0#1; [2025-03-08 06:33:19,051 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L529: havoc main_~node2__newmax~0#1; [2025-03-08 06:33:19,162 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2025-03-08 06:33:19,162 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:33:19,179 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:33:19,180 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:33:19,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:33:19 BoogieIcfgContainer [2025-03-08 06:33:19,180 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:33:19,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:33:19,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:33:19,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:33:19,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:33:17" (1/3) ... [2025-03-08 06:33:19,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e53185c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:33:19, skipping insertion in model container [2025-03-08 06:33:19,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:33:17" (2/3) ... [2025-03-08 06:33:19,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e53185c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:33:19, skipping insertion in model container [2025-03-08 06:33:19,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:33:19" (3/3) ... [2025-03-08 06:33:19,192 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-08 06:33:19,203 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:33:19,207 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 351 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 06:33:19,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:33:19,266 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;@1bb3339, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:33:19,267 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 06:33:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 349 states have (on average 1.7879656160458453) internal successors, (624), 350 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-08 06:33:19,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:19,283 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:19,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:19,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash -848181599, now seen corresponding path program 1 times [2025-03-08 06:33:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436195439] [2025-03-08 06:33:19,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:19,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:19,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-08 06:33:19,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-08 06:33:19,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:19,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:19,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:19,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436195439] [2025-03-08 06:33:19,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436195439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:19,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:19,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:33:19,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29785592] [2025-03-08 06:33:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:19,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:33:19,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:19,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:33:19,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:19,895 INFO L87 Difference]: Start difference. First operand has 351 states, 349 states have (on average 1.7879656160458453) internal successors, (624), 350 states have internal predecessors, (624), 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 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:20,028 INFO L93 Difference]: Finished difference Result 655 states and 1130 transitions. [2025-03-08 06:33:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:33:20,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2025-03-08 06:33:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:20,041 INFO L225 Difference]: With dead ends: 655 [2025-03-08 06:33:20,041 INFO L226 Difference]: Without dead ends: 491 [2025-03-08 06:33:20,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:20,051 INFO L435 NwaCegarLoop]: 618 mSDtfsCounter, 268 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:20,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1150 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:33:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2025-03-08 06:33:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 488. [2025-03-08 06:33:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.6529774127310062) internal successors, (805), 487 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 805 transitions. [2025-03-08 06:33:20,104 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 805 transitions. Word has length 118 [2025-03-08 06:33:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:20,104 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 805 transitions. [2025-03-08 06:33:20,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 805 transitions. [2025-03-08 06:33:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 06:33:20,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:20,108 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:20,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:33:20,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:20,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:20,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1095591777, now seen corresponding path program 1 times [2025-03-08 06:33:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:20,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70914755] [2025-03-08 06:33:20,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:20,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 06:33:20,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 06:33:20,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:20,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:20,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70914755] [2025-03-08 06:33:20,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70914755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:20,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:20,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:33:20,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218722651] [2025-03-08 06:33:20,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:20,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:33:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:20,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:33:20,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:20,350 INFO L87 Difference]: Start difference. First operand 488 states and 805 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:20,401 INFO L93 Difference]: Finished difference Result 1058 states and 1753 transitions. [2025-03-08 06:33:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:33:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2025-03-08 06:33:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:20,420 INFO L225 Difference]: With dead ends: 1058 [2025-03-08 06:33:20,420 INFO L226 Difference]: Without dead ends: 763 [2025-03-08 06:33:20,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:20,423 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 231 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:20,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1100 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:33:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-03-08 06:33:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 759. [2025-03-08 06:33:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.654353562005277) internal successors, (1254), 758 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1254 transitions. [2025-03-08 06:33:20,465 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1254 transitions. Word has length 121 [2025-03-08 06:33:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:20,465 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1254 transitions. [2025-03-08 06:33:20,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,466 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1254 transitions. [2025-03-08 06:33:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-08 06:33:20,472 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:20,472 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:20,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:33:20,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:20,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash -494679978, now seen corresponding path program 1 times [2025-03-08 06:33:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:20,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071098620] [2025-03-08 06:33:20,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:20,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-08 06:33:20,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-08 06:33:20,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:20,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:20,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071098620] [2025-03-08 06:33:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071098620] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:20,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:20,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:33:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914903495] [2025-03-08 06:33:20,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:20,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:33:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:20,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:33:20,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:20,661 INFO L87 Difference]: Start difference. First operand 759 states and 1254 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:20,709 INFO L93 Difference]: Finished difference Result 1851 states and 3064 transitions. [2025-03-08 06:33:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:33:20,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2025-03-08 06:33:20,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:20,717 INFO L225 Difference]: With dead ends: 1851 [2025-03-08 06:33:20,718 INFO L226 Difference]: Without dead ends: 1285 [2025-03-08 06:33:20,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:20,721 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 224 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:20,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1101 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:33:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2025-03-08 06:33:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1279. [2025-03-08 06:33:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 1.6510172143974962) internal successors, (2110), 1278 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 2110 transitions. [2025-03-08 06:33:20,767 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 2110 transitions. Word has length 124 [2025-03-08 06:33:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:20,767 INFO L471 AbstractCegarLoop]: Abstraction has 1279 states and 2110 transitions. [2025-03-08 06:33:20,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 2110 transitions. [2025-03-08 06:33:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-08 06:33:20,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:20,770 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:20,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:33:20,772 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:20,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash 563680820, now seen corresponding path program 1 times [2025-03-08 06:33:20,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:20,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195096594] [2025-03-08 06:33:20,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:20,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:20,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-08 06:33:20,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 06:33:20,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:20,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195096594] [2025-03-08 06:33:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195096594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:20,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:33:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214766652] [2025-03-08 06:33:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:20,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:33:20,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:20,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:33:20,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:20,980 INFO L87 Difference]: Start difference. First operand 1279 states and 2110 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:21,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:21,032 INFO L93 Difference]: Finished difference Result 3371 states and 5560 transitions. [2025-03-08 06:33:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:33:21,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2025-03-08 06:33:21,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:21,040 INFO L225 Difference]: With dead ends: 3371 [2025-03-08 06:33:21,040 INFO L226 Difference]: Without dead ends: 2285 [2025-03-08 06:33:21,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:21,046 INFO L435 NwaCegarLoop]: 570 mSDtfsCounter, 216 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:21,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1099 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:33:21,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2025-03-08 06:33:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2275. [2025-03-08 06:33:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 2274 states have (on average 1.6402814423922603) internal successors, (3730), 2274 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 3730 transitions. [2025-03-08 06:33:21,096 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 3730 transitions. Word has length 127 [2025-03-08 06:33:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:21,096 INFO L471 AbstractCegarLoop]: Abstraction has 2275 states and 3730 transitions. [2025-03-08 06:33:21,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 3730 transitions. [2025-03-08 06:33:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 06:33:21,100 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:21,101 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:21,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:33:21,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:21,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:21,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1946026763, now seen corresponding path program 1 times [2025-03-08 06:33:21,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:21,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312923042] [2025-03-08 06:33:21,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:21,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:21,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 06:33:21,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 06:33:21,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:21,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:21,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:21,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312923042] [2025-03-08 06:33:21,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312923042] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:21,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:21,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:33:21,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428573745] [2025-03-08 06:33:21,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:21,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:33:21,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:21,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:33:21,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:33:21,351 INFO L87 Difference]: Start difference. First operand 2275 states and 3730 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:21,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:21,701 INFO L93 Difference]: Finished difference Result 11927 states and 19706 transitions. [2025-03-08 06:33:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:33:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 130 [2025-03-08 06:33:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:21,732 INFO L225 Difference]: With dead ends: 11927 [2025-03-08 06:33:21,733 INFO L226 Difference]: Without dead ends: 9845 [2025-03-08 06:33:21,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 06:33:21,739 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 2156 mSDsluCounter, 4815 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 5392 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:21,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 5392 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:33:21,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9845 states. [2025-03-08 06:33:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9845 to 4220. [2025-03-08 06:33:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4220 states, 4219 states have (on average 1.6401990993126334) internal successors, (6920), 4219 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4220 states to 4220 states and 6920 transitions. [2025-03-08 06:33:21,872 INFO L78 Accepts]: Start accepts. Automaton has 4220 states and 6920 transitions. Word has length 130 [2025-03-08 06:33:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:21,872 INFO L471 AbstractCegarLoop]: Abstraction has 4220 states and 6920 transitions. [2025-03-08 06:33:21,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4220 states and 6920 transitions. [2025-03-08 06:33:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-08 06:33:21,878 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:21,878 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:21,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:33:21,879 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:21,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash 199255709, now seen corresponding path program 1 times [2025-03-08 06:33:21,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561797365] [2025-03-08 06:33:21,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:21,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-08 06:33:21,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 06:33:21,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:21,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:22,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561797365] [2025-03-08 06:33:22,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561797365] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:22,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:22,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:33:22,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426334446] [2025-03-08 06:33:22,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:22,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:33:22,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:22,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:33:22,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:33:22,054 INFO L87 Difference]: Start difference. First operand 4220 states and 6920 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:22,170 INFO L93 Difference]: Finished difference Result 12379 states and 20401 transitions. [2025-03-08 06:33:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:33:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 131 [2025-03-08 06:33:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:22,206 INFO L225 Difference]: With dead ends: 12379 [2025-03-08 06:33:22,209 INFO L226 Difference]: Without dead ends: 8352 [2025-03-08 06:33:22,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:33:22,218 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 760 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:22,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1904 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:33:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2025-03-08 06:33:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 6269. [2025-03-08 06:33:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 6268 states have (on average 1.6426292278238672) internal successors, (10296), 6268 states have internal predecessors, (10296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 10296 transitions. [2025-03-08 06:33:22,417 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 10296 transitions. Word has length 131 [2025-03-08 06:33:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:22,418 INFO L471 AbstractCegarLoop]: Abstraction has 6269 states and 10296 transitions. [2025-03-08 06:33:22,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 10296 transitions. [2025-03-08 06:33:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-08 06:33:22,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:22,422 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:22,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:33:22,422 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:22,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1883838510, now seen corresponding path program 1 times [2025-03-08 06:33:22,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433549134] [2025-03-08 06:33:22,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:22,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 06:33:22,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 06:33:22,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:22,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:22,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:22,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433549134] [2025-03-08 06:33:22,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433549134] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:22,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:22,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:33:22,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400609935] [2025-03-08 06:33:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:22,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:33:22,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:22,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:33:22,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:33:22,607 INFO L87 Difference]: Start difference. First operand 6269 states and 10296 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:22,745 INFO L93 Difference]: Finished difference Result 18421 states and 30329 transitions. [2025-03-08 06:33:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:33:22,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2025-03-08 06:33:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:22,775 INFO L225 Difference]: With dead ends: 18421 [2025-03-08 06:33:22,775 INFO L226 Difference]: Without dead ends: 12345 [2025-03-08 06:33:22,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:33:22,789 INFO L435 NwaCegarLoop]: 570 mSDtfsCounter, 758 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:22,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1909 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:33:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12345 states. [2025-03-08 06:33:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12345 to 9283. [2025-03-08 06:33:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9283 states, 9282 states have (on average 1.641025641025641) internal successors, (15232), 9282 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9283 states to 9283 states and 15232 transitions. [2025-03-08 06:33:23,008 INFO L78 Accepts]: Start accepts. Automaton has 9283 states and 15232 transitions. Word has length 132 [2025-03-08 06:33:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:23,008 INFO L471 AbstractCegarLoop]: Abstraction has 9283 states and 15232 transitions. [2025-03-08 06:33:23,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 9283 states and 15232 transitions. [2025-03-08 06:33:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-08 06:33:23,012 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:23,012 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:23,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:33:23,013 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:23,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1728758880, now seen corresponding path program 1 times [2025-03-08 06:33:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393530388] [2025-03-08 06:33:23,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:23,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-08 06:33:23,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-08 06:33:23,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:23,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:23,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393530388] [2025-03-08 06:33:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393530388] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:23,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:23,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:33:23,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171332706] [2025-03-08 06:33:23,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:23,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:33:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:23,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:33:23,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:33:23,162 INFO L87 Difference]: Start difference. First operand 9283 states and 15232 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:23,332 INFO L93 Difference]: Finished difference Result 27309 states and 44917 transitions. [2025-03-08 06:33:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:33:23,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 133 [2025-03-08 06:33:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:23,364 INFO L225 Difference]: With dead ends: 27309 [2025-03-08 06:33:23,364 INFO L226 Difference]: Without dead ends: 18219 [2025-03-08 06:33:23,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:33:23,374 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 756 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:23,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1904 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:33:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18219 states. [2025-03-08 06:33:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18219 to 13717. [2025-03-08 06:33:23,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13717 states, 13716 states have (on average 1.6393992417614465) internal successors, (22486), 13716 states have internal predecessors, (22486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13717 states to 13717 states and 22486 transitions. [2025-03-08 06:33:23,690 INFO L78 Accepts]: Start accepts. Automaton has 13717 states and 22486 transitions. Word has length 133 [2025-03-08 06:33:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:23,690 INFO L471 AbstractCegarLoop]: Abstraction has 13717 states and 22486 transitions. [2025-03-08 06:33:23,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13717 states and 22486 transitions. [2025-03-08 06:33:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 06:33:23,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:23,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:23,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:33:23,695 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:23,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash 229706988, now seen corresponding path program 1 times [2025-03-08 06:33:23,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:23,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348130281] [2025-03-08 06:33:23,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:23,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:23,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 06:33:23,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 06:33:23,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:23,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:23,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:23,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348130281] [2025-03-08 06:33:23,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348130281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:23,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:23,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:33:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484653078] [2025-03-08 06:33:23,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:23,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:33:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:23,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:33:23,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:23,801 INFO L87 Difference]: Start difference. First operand 13717 states and 22486 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:23,880 INFO L93 Difference]: Finished difference Result 30564 states and 50300 transitions. [2025-03-08 06:33:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:33:23,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2025-03-08 06:33:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:23,965 INFO L225 Difference]: With dead ends: 30564 [2025-03-08 06:33:23,965 INFO L226 Difference]: Without dead ends: 21069 [2025-03-08 06:33:23,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:23,975 INFO L435 NwaCegarLoop]: 768 mSDtfsCounter, 237 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:23,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1295 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:33:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21069 states. [2025-03-08 06:33:24,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21069 to 21067. [2025-03-08 06:33:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21067 states, 21066 states have (on average 1.6386594512484571) internal successors, (34520), 21066 states have internal predecessors, (34520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21067 states to 21067 states and 34520 transitions. [2025-03-08 06:33:24,312 INFO L78 Accepts]: Start accepts. Automaton has 21067 states and 34520 transitions. Word has length 134 [2025-03-08 06:33:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:24,312 INFO L471 AbstractCegarLoop]: Abstraction has 21067 states and 34520 transitions. [2025-03-08 06:33:24,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 21067 states and 34520 transitions. [2025-03-08 06:33:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 06:33:24,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:24,315 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:24,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 06:33:24,315 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:24,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:24,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1999192566, now seen corresponding path program 1 times [2025-03-08 06:33:24,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:24,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738689065] [2025-03-08 06:33:24,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:24,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 06:33:24,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 06:33:24,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:24,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738689065] [2025-03-08 06:33:24,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738689065] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:24,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:24,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:33:24,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325730667] [2025-03-08 06:33:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:24,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:33:24,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:24,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:33:24,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:24,431 INFO L87 Difference]: Start difference. First operand 21067 states and 34520 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:24,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:24,702 INFO L93 Difference]: Finished difference Result 46560 states and 76368 transitions. [2025-03-08 06:33:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:33:24,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2025-03-08 06:33:24,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:24,759 INFO L225 Difference]: With dead ends: 46560 [2025-03-08 06:33:24,760 INFO L226 Difference]: Without dead ends: 32027 [2025-03-08 06:33:24,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:24,774 INFO L435 NwaCegarLoop]: 742 mSDtfsCounter, 230 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:24,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1270 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:33:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32027 states. [2025-03-08 06:33:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32027 to 32025. [2025-03-08 06:33:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32025 states, 32024 states have (on average 1.6338058955783163) internal successors, (52321), 32024 states have internal predecessors, (52321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:25,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32025 states to 32025 states and 52321 transitions. [2025-03-08 06:33:25,108 INFO L78 Accepts]: Start accepts. Automaton has 32025 states and 52321 transitions. Word has length 134 [2025-03-08 06:33:25,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:25,108 INFO L471 AbstractCegarLoop]: Abstraction has 32025 states and 52321 transitions. [2025-03-08 06:33:25,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand 32025 states and 52321 transitions. [2025-03-08 06:33:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 06:33:25,109 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:25,109 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:25,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 06:33:25,109 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:25,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -829623636, now seen corresponding path program 1 times [2025-03-08 06:33:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:25,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701998444] [2025-03-08 06:33:25,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:25,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:25,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 06:33:25,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 06:33:25,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:25,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:25,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:25,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701998444] [2025-03-08 06:33:25,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701998444] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:25,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:25,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:33:25,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630290292] [2025-03-08 06:33:25,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:25,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:33:25,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:25,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:33:25,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:25,328 INFO L87 Difference]: Start difference. First operand 32025 states and 52321 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:25,525 INFO L93 Difference]: Finished difference Result 70377 states and 115087 transitions. [2025-03-08 06:33:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:33:25,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2025-03-08 06:33:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:25,620 INFO L225 Difference]: With dead ends: 70377 [2025-03-08 06:33:25,620 INFO L226 Difference]: Without dead ends: 48201 [2025-03-08 06:33:25,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:25,659 INFO L435 NwaCegarLoop]: 708 mSDtfsCounter, 223 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:25,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:33:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48201 states. [2025-03-08 06:33:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48201 to 48199. [2025-03-08 06:33:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48199 states, 48198 states have (on average 1.627909871778912) internal successors, (78462), 48198 states have internal predecessors, (78462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48199 states to 48199 states and 78462 transitions. [2025-03-08 06:33:26,376 INFO L78 Accepts]: Start accepts. Automaton has 48199 states and 78462 transitions. Word has length 134 [2025-03-08 06:33:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:26,376 INFO L471 AbstractCegarLoop]: Abstraction has 48199 states and 78462 transitions. [2025-03-08 06:33:26,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand 48199 states and 78462 transitions. [2025-03-08 06:33:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 06:33:26,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:26,378 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:26,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 06:33:26,378 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:26,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2050217647, now seen corresponding path program 1 times [2025-03-08 06:33:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:26,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922540100] [2025-03-08 06:33:26,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:26,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 06:33:26,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 06:33:26,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:26,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:26,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:26,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922540100] [2025-03-08 06:33:26,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922540100] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:26,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:26,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:33:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544410132] [2025-03-08 06:33:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:26,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:33:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:26,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:33:26,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:33:26,533 INFO L87 Difference]: Start difference. First operand 48199 states and 78462 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:27,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:27,045 INFO L93 Difference]: Finished difference Result 143685 states and 234811 transitions. [2025-03-08 06:33:27,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:33:27,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 134 [2025-03-08 06:33:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:27,226 INFO L225 Difference]: With dead ends: 143685 [2025-03-08 06:33:27,227 INFO L226 Difference]: Without dead ends: 95725 [2025-03-08 06:33:27,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:33:27,292 INFO L435 NwaCegarLoop]: 669 mSDtfsCounter, 733 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:27,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 2012 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:33:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95725 states. [2025-03-08 06:33:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95725 to 71737. [2025-03-08 06:33:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71737 states, 71736 states have (on average 1.6268540202966433) internal successors, (116704), 71736 states have internal predecessors, (116704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71737 states to 71737 states and 116704 transitions. [2025-03-08 06:33:28,676 INFO L78 Accepts]: Start accepts. Automaton has 71737 states and 116704 transitions. Word has length 134 [2025-03-08 06:33:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:28,676 INFO L471 AbstractCegarLoop]: Abstraction has 71737 states and 116704 transitions. [2025-03-08 06:33:28,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 71737 states and 116704 transitions. [2025-03-08 06:33:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-08 06:33:28,677 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:28,678 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:28,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 06:33:28,678 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:28,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash -913949677, now seen corresponding path program 1 times [2025-03-08 06:33:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:28,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488524453] [2025-03-08 06:33:28,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:28,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:28,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-08 06:33:28,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 06:33:28,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:28,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:28,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:28,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488524453] [2025-03-08 06:33:28,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488524453] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:28,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:28,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:33:28,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344093124] [2025-03-08 06:33:28,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:28,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:33:28,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:28,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:33:28,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:28,759 INFO L87 Difference]: Start difference. First operand 71737 states and 116704 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:29,391 INFO L93 Difference]: Finished difference Result 156755 states and 255331 transitions. [2025-03-08 06:33:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:33:29,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 135 [2025-03-08 06:33:29,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:29,567 INFO L225 Difference]: With dead ends: 156755 [2025-03-08 06:33:29,567 INFO L226 Difference]: Without dead ends: 106563 [2025-03-08 06:33:29,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:33:29,620 INFO L435 NwaCegarLoop]: 672 mSDtfsCounter, 214 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:29,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1202 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:33:29,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106563 states. [2025-03-08 06:33:30,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106563 to 106561. [2025-03-08 06:33:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106561 states, 106560 states have (on average 1.6191629129129128) internal successors, (172538), 106560 states have internal predecessors, (172538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106561 states to 106561 states and 172538 transitions. [2025-03-08 06:33:31,495 INFO L78 Accepts]: Start accepts. Automaton has 106561 states and 172538 transitions. Word has length 135 [2025-03-08 06:33:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:31,496 INFO L471 AbstractCegarLoop]: Abstraction has 106561 states and 172538 transitions. [2025-03-08 06:33:31,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 106561 states and 172538 transitions. [2025-03-08 06:33:31,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-08 06:33:31,496 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:31,497 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:31,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 06:33:31,497 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:31,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:31,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1182313171, now seen corresponding path program 1 times [2025-03-08 06:33:31,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:31,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030470783] [2025-03-08 06:33:31,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:31,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:31,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-08 06:33:31,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-08 06:33:31,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:31,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:31,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:31,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030470783] [2025-03-08 06:33:31,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030470783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:31,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:31,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:33:31,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137066937] [2025-03-08 06:33:31,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:31,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:33:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:31,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:33:31,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:33:31,832 INFO L87 Difference]: Start difference. First operand 106561 states and 172538 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:32,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:32,571 INFO L93 Difference]: Finished difference Result 212863 states and 344660 transitions. [2025-03-08 06:33:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:33:32,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 136 [2025-03-08 06:33:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:32,764 INFO L225 Difference]: With dead ends: 212863 [2025-03-08 06:33:32,765 INFO L226 Difference]: Without dead ends: 106563 [2025-03-08 06:33:32,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-03-08 06:33:32,864 INFO L435 NwaCegarLoop]: 573 mSDtfsCounter, 660 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:32,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 2184 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:33:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106563 states. [2025-03-08 06:33:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106563 to 106561. [2025-03-08 06:33:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106561 states, 106560 states have (on average 1.6132976726726727) internal successors, (171913), 106560 states have internal predecessors, (171913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106561 states to 106561 states and 171913 transitions. [2025-03-08 06:33:34,303 INFO L78 Accepts]: Start accepts. Automaton has 106561 states and 171913 transitions. Word has length 136 [2025-03-08 06:33:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:34,304 INFO L471 AbstractCegarLoop]: Abstraction has 106561 states and 171913 transitions. [2025-03-08 06:33:34,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 106561 states and 171913 transitions. [2025-03-08 06:33:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 06:33:34,309 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:34,309 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:34,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 06:33:34,309 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:34,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:34,310 INFO L85 PathProgramCache]: Analyzing trace with hash 652412426, now seen corresponding path program 1 times [2025-03-08 06:33:34,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:34,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807561070] [2025-03-08 06:33:34,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:34,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:34,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 06:33:34,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 06:33:34,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:34,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:34,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:34,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807561070] [2025-03-08 06:33:34,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807561070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:34,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:34,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:33:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945746969] [2025-03-08 06:33:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:34,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:33:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:34,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:33:34,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:33:34,650 INFO L87 Difference]: Start difference. First operand 106561 states and 171913 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:35,899 INFO L93 Difference]: Finished difference Result 311503 states and 503008 transitions. [2025-03-08 06:33:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:33:35,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 139 [2025-03-08 06:33:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:36,265 INFO L225 Difference]: With dead ends: 311503 [2025-03-08 06:33:36,265 INFO L226 Difference]: Without dead ends: 205203 [2025-03-08 06:33:36,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-03-08 06:33:36,349 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 871 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:36,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2190 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:33:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205203 states. [2025-03-08 06:33:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205203 to 205201. [2025-03-08 06:33:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205201 states, 205200 states have (on average 1.6057212475633529) internal successors, (329494), 205200 states have internal predecessors, (329494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205201 states to 205201 states and 329494 transitions. [2025-03-08 06:33:39,040 INFO L78 Accepts]: Start accepts. Automaton has 205201 states and 329494 transitions. Word has length 139 [2025-03-08 06:33:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:39,040 INFO L471 AbstractCegarLoop]: Abstraction has 205201 states and 329494 transitions. [2025-03-08 06:33:39,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 205201 states and 329494 transitions. [2025-03-08 06:33:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 06:33:39,041 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:39,042 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:39,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 06:33:39,042 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:39,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1249095968, now seen corresponding path program 1 times [2025-03-08 06:33:39,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:39,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764022456] [2025-03-08 06:33:39,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:39,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:39,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 06:33:39,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 06:33:39,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:39,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:33:39,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:39,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764022456] [2025-03-08 06:33:39,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764022456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:39,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:39,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:33:39,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885286761] [2025-03-08 06:33:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:39,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:33:39,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:39,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:33:39,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:33:39,677 INFO L87 Difference]: Start difference. First operand 205201 states and 329494 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:40,460 INFO L93 Difference]: Finished difference Result 209075 states and 335303 transitions. [2025-03-08 06:33:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 06:33:40,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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 140 [2025-03-08 06:33:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:40,836 INFO L225 Difference]: With dead ends: 209075 [2025-03-08 06:33:40,836 INFO L226 Difference]: Without dead ends: 209073 [2025-03-08 06:33:40,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:33:40,881 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 0 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:40,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2267 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:33:41,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209073 states. [2025-03-08 06:33:42,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209073 to 209073. [2025-03-08 06:33:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209073 states, 209072 states have (on average 1.5943741868829877) internal successors, (333339), 209072 states have internal predecessors, (333339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209073 states to 209073 states and 333339 transitions. [2025-03-08 06:33:43,786 INFO L78 Accepts]: Start accepts. Automaton has 209073 states and 333339 transitions. Word has length 140 [2025-03-08 06:33:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:43,787 INFO L471 AbstractCegarLoop]: Abstraction has 209073 states and 333339 transitions. [2025-03-08 06:33:43,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 209073 states and 333339 transitions. [2025-03-08 06:33:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:33:43,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:43,790 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:43,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 06:33:43,790 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:43,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:43,791 INFO L85 PathProgramCache]: Analyzing trace with hash -592514161, now seen corresponding path program 1 times [2025-03-08 06:33:43,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:43,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498051317] [2025-03-08 06:33:43,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:43,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:43,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:33:43,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:33:43,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:43,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 06:33:43,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:43,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498051317] [2025-03-08 06:33:43,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498051317] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:43,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:43,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:33:43,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65625971] [2025-03-08 06:33:43,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:43,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:33:43,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:43,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:33:43,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:33:43,997 INFO L87 Difference]: Start difference. First operand 209073 states and 333339 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:46,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:46,049 INFO L93 Difference]: Finished difference Result 570403 states and 912112 transitions. [2025-03-08 06:33:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:33:46,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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 176 [2025-03-08 06:33:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:47,382 INFO L225 Difference]: With dead ends: 570403 [2025-03-08 06:33:47,382 INFO L226 Difference]: Without dead ends: 477401 [2025-03-08 06:33:47,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:33:47,490 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 1515 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:47,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 3713 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:33:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477401 states. [2025-03-08 06:33:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477401 to 336137. [2025-03-08 06:33:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336137 states, 336136 states have (on average 1.5929058476331008) internal successors, (535433), 336136 states have internal predecessors, (535433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336137 states to 336137 states and 535433 transitions. [2025-03-08 06:33:53,190 INFO L78 Accepts]: Start accepts. Automaton has 336137 states and 535433 transitions. Word has length 176 [2025-03-08 06:33:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:33:53,191 INFO L471 AbstractCegarLoop]: Abstraction has 336137 states and 535433 transitions. [2025-03-08 06:33:53,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 336137 states and 535433 transitions. [2025-03-08 06:33:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 06:33:53,194 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:33:53,194 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:33:53,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 06:33:53,199 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:33:53,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:33:53,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1473553581, now seen corresponding path program 1 times [2025-03-08 06:33:53,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:33:53,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796274131] [2025-03-08 06:33:53,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:33:53,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:33:53,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 06:33:53,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 06:33:53,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:33:53,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:33:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-08 06:33:53,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:33:53,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796274131] [2025-03-08 06:33:53,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796274131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:33:53,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:33:53,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:33:53,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108790191] [2025-03-08 06:33:53,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:33:53,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:33:53,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:33:53,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:33:53,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:33:53,408 INFO L87 Difference]: Start difference. First operand 336137 states and 535433 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:33:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:33:55,356 INFO L93 Difference]: Finished difference Result 641805 states and 1026412 transitions. [2025-03-08 06:33:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:33:55,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 176 [2025-03-08 06:33:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:33:56,439 INFO L225 Difference]: With dead ends: 641805 [2025-03-08 06:33:56,439 INFO L226 Difference]: Without dead ends: 549953 [2025-03-08 06:33:57,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:33:57,182 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 1515 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:33:57,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 3620 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:33:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549953 states.