./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.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_lcr.5.ufo.BOUNDED-10.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 c056d4e57d61d37550728f0e28e1a5e47ebeedfd3e4791c23bdeb0bab1210358 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:26:06,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:26:06,800 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:26:06,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:26:06,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:26:06,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:26:06,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:26:06,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:26:06,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:26:06,827 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:26:06,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:26:06,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:26:06,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:26:06,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:26:06,828 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:26:06,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:26:06,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:26:06,828 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:26:06,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:26:06,829 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:26:06,829 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:26:06,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:26:06,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:26:06,830 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 -> c056d4e57d61d37550728f0e28e1a5e47ebeedfd3e4791c23bdeb0bab1210358 [2025-03-08 06:26:07,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:26:07,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:26:07,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:26:07,034 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:26:07,034 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:26:07,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2025-03-08 06:26:08,174 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda43e191/f96250ce02e04ecaa30467758df0d145/FLAG6c44b2a68 [2025-03-08 06:26:08,448 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:26:08,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2025-03-08 06:26:08,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda43e191/f96250ce02e04ecaa30467758df0d145/FLAG6c44b2a68 [2025-03-08 06:26:08,734 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda43e191/f96250ce02e04ecaa30467758df0d145 [2025-03-08 06:26:08,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:26:08,737 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:26:08,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:26:08,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:26:08,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:26:08,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:08,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf098e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08, skipping insertion in model container [2025-03-08 06:26:08,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:08,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:26:08,883 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5769,5782] [2025-03-08 06:26:08,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:26:08,906 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:26:08,929 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5769,5782] [2025-03-08 06:26:08,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:26:08,964 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:26:08,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08 WrapperNode [2025-03-08 06:26:08,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:26:08,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:26:08,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:26:08,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:26:08,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:08,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:08,998 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 456 [2025-03-08 06:26:08,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:26:08,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:26:08,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:26:08,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:26:09,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,021 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 06:26:09,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,031 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:26:09,036 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:26:09,036 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:26:09,036 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:26:09,036 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (1/1) ... [2025-03-08 06:26:09,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:26:09,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:26:09,064 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 06:26:09,069 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 06:26:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:26:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:26:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:26:09,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:26:09,169 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:26:09,171 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:26:09,521 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L490: havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L400: havoc main_~node4____CPAchecker_TMP_0~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L244: havoc main_~node5__m5~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L295: havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L229: havoc main_~node4__m4~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L535: havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L445: havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L214: havoc main_~node3__m3~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L355: havoc main_~node5____CPAchecker_TMP_0~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L199: havoc main_~node2__m2~0#1; [2025-03-08 06:26:09,522 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L183: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2025-03-08 06:26:09,545 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2025-03-08 06:26:09,547 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:26:09,557 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:26:09,558 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:26:09,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:26:09 BoogieIcfgContainer [2025-03-08 06:26:09,559 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:26:09,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:26:09,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:26:09,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:26:09,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:26:08" (1/3) ... [2025-03-08 06:26:09,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e435472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:26:09, skipping insertion in model container [2025-03-08 06:26:09,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:26:08" (2/3) ... [2025-03-08 06:26:09,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e435472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:26:09, skipping insertion in model container [2025-03-08 06:26:09,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:26:09" (3/3) ... [2025-03-08 06:26:09,567 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2025-03-08 06:26:09,579 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:26:09,581 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c that has 1 procedures, 97 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 06:26:09,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:26:09,635 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;@3473b7df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:26:09,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 06:26:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 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 06:26:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-08 06:26:09,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:09,645 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] [2025-03-08 06:26:09,645 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:09,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2112701463, now seen corresponding path program 1 times [2025-03-08 06:26:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:09,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191980674] [2025-03-08 06:26:09,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:09,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:09,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-08 06:26:09,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-08 06:26:09,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:09,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:09,970 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 06:26:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191980674] [2025-03-08 06:26:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191980674] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:09,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:09,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:26:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47282901] [2025-03-08 06:26:09,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:09,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:26:09,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:09,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:26:09,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:26:09,988 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 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 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 06:26:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:10,051 INFO L93 Difference]: Finished difference Result 215 states and 350 transitions. [2025-03-08 06:26:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:26:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2025-03-08 06:26:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:10,061 INFO L225 Difference]: With dead ends: 215 [2025-03-08 06:26:10,062 INFO L226 Difference]: Without dead ends: 146 [2025-03-08 06:26:10,065 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 06:26:10,068 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 115 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:10,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 341 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:26:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-08 06:26:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2025-03-08 06:26:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4615384615384615) internal successors, (209), 143 states have internal predecessors, (209), 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 06:26:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 209 transitions. [2025-03-08 06:26:10,097 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 209 transitions. Word has length 59 [2025-03-08 06:26:10,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:10,097 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 209 transitions. [2025-03-08 06:26:10,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 06:26:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 209 transitions. [2025-03-08 06:26:10,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-08 06:26:10,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:10,098 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] [2025-03-08 06:26:10,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:26:10,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:10,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:10,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2111481534, now seen corresponding path program 1 times [2025-03-08 06:26:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:10,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688502289] [2025-03-08 06:26:10,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:10,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-08 06:26:10,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-08 06:26:10,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:10,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:10,194 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 06:26:10,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:10,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688502289] [2025-03-08 06:26:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688502289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:10,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:10,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:26:10,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451583631] [2025-03-08 06:26:10,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:10,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:26:10,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:10,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:26:10,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:26:10,197 INFO L87 Difference]: Start difference. First operand 144 states and 209 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 06:26:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:10,220 INFO L93 Difference]: Finished difference Result 348 states and 533 transitions. [2025-03-08 06:26:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:26:10,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2025-03-08 06:26:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:10,222 INFO L225 Difference]: With dead ends: 348 [2025-03-08 06:26:10,222 INFO L226 Difference]: Without dead ends: 238 [2025-03-08 06:26:10,222 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 06:26:10,223 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 80 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 293 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 06:26:10,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 293 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:26:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-03-08 06:26:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2025-03-08 06:26:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5106382978723405) internal successors, (355), 235 states have internal predecessors, (355), 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 06:26:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 355 transitions. [2025-03-08 06:26:10,234 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 355 transitions. Word has length 60 [2025-03-08 06:26:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:10,234 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 355 transitions. [2025-03-08 06:26:10,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 06:26:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 355 transitions. [2025-03-08 06:26:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-08 06:26:10,235 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:10,235 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] [2025-03-08 06:26:10,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:26:10,235 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:10,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:10,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1408178890, now seen corresponding path program 1 times [2025-03-08 06:26:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:10,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136721804] [2025-03-08 06:26:10,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:10,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:10,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-08 06:26:10,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 06:26:10,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:10,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:10,332 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 06:26:10,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:10,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136721804] [2025-03-08 06:26:10,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136721804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:10,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:10,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:26:10,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348194247] [2025-03-08 06:26:10,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:10,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:26:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:10,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:26:10,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:26:10,334 INFO L87 Difference]: Start difference. First operand 236 states and 355 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 06:26:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:10,360 INFO L93 Difference]: Finished difference Result 608 states and 945 transitions. [2025-03-08 06:26:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:26:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2025-03-08 06:26:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:10,362 INFO L225 Difference]: With dead ends: 608 [2025-03-08 06:26:10,362 INFO L226 Difference]: Without dead ends: 406 [2025-03-08 06:26:10,363 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 06:26:10,363 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 75 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 289 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 06:26:10,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 289 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:26:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2025-03-08 06:26:10,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2025-03-08 06:26:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5359801488833746) internal successors, (619), 403 states have internal predecessors, (619), 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 06:26:10,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 619 transitions. [2025-03-08 06:26:10,379 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 619 transitions. Word has length 61 [2025-03-08 06:26:10,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:10,380 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 619 transitions. [2025-03-08 06:26:10,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 06:26:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 619 transitions. [2025-03-08 06:26:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-08 06:26:10,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:10,381 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] [2025-03-08 06:26:10,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:26:10,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:10,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:10,382 INFO L85 PathProgramCache]: Analyzing trace with hash 6911087, now seen corresponding path program 1 times [2025-03-08 06:26:10,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:10,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625208736] [2025-03-08 06:26:10,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:10,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:10,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-08 06:26:10,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 06:26:10,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:10,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:10,492 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 06:26:10,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:10,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625208736] [2025-03-08 06:26:10,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625208736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:10,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:10,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:26:10,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472292089] [2025-03-08 06:26:10,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:10,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:26:10,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:10,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:26:10,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:26:10,495 INFO L87 Difference]: Start difference. First operand 404 states and 619 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 06:26:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:10,516 INFO L93 Difference]: Finished difference Result 1080 states and 1685 transitions. [2025-03-08 06:26:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:26:10,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2025-03-08 06:26:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:10,520 INFO L225 Difference]: With dead ends: 1080 [2025-03-08 06:26:10,520 INFO L226 Difference]: Without dead ends: 710 [2025-03-08 06:26:10,521 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 06:26:10,524 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 70 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 285 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 06:26:10,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:26:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2025-03-08 06:26:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 708. [2025-03-08 06:26:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.5431400282885432) internal successors, (1091), 707 states have internal predecessors, (1091), 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 06:26:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1091 transitions. [2025-03-08 06:26:10,558 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1091 transitions. Word has length 62 [2025-03-08 06:26:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:10,559 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 1091 transitions. [2025-03-08 06:26:10,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 06:26:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1091 transitions. [2025-03-08 06:26:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-08 06:26:10,562 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:10,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:26:10,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:26:10,563 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:10,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1391511427, now seen corresponding path program 1 times [2025-03-08 06:26:10,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:10,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387840305] [2025-03-08 06:26:10,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:10,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:10,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-08 06:26:10,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-08 06:26:10,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:10,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:10,646 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 06:26:10,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387840305] [2025-03-08 06:26:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387840305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:10,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:10,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:26:10,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117634663] [2025-03-08 06:26:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:10,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:26:10,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:10,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:26:10,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:26:10,649 INFO L87 Difference]: Start difference. First operand 708 states and 1091 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:10,674 INFO L93 Difference]: Finished difference Result 1928 states and 2997 transitions. [2025-03-08 06:26:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:26:10,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-08 06:26:10,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:10,680 INFO L225 Difference]: With dead ends: 1928 [2025-03-08 06:26:10,681 INFO L226 Difference]: Without dead ends: 1254 [2025-03-08 06:26:10,682 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 06:26:10,683 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 65 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 281 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 06:26:10,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:26:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2025-03-08 06:26:10,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1252. [2025-03-08 06:26:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.5371702637889688) internal successors, (1923), 1251 states have internal predecessors, (1923), 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 06:26:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1923 transitions. [2025-03-08 06:26:10,717 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1923 transitions. Word has length 63 [2025-03-08 06:26:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:10,717 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1923 transitions. [2025-03-08 06:26:10,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1923 transitions. [2025-03-08 06:26:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-08 06:26:10,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:10,718 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:26:10,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:26:10,719 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:10,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1972400284, now seen corresponding path program 1 times [2025-03-08 06:26:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122883880] [2025-03-08 06:26:10,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:10,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-08 06:26:10,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 06:26:10,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:10,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:10,881 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 06:26:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122883880] [2025-03-08 06:26:10,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122883880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:10,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:10,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 06:26:10,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782505605] [2025-03-08 06:26:10,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:10,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 06:26:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:10,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 06:26:10,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 06:26:10,883 INFO L87 Difference]: Start difference. First operand 1252 states and 1923 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:11,164 INFO L93 Difference]: Finished difference Result 13432 states and 20813 transitions. [2025-03-08 06:26:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 06:26:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-08 06:26:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:11,202 INFO L225 Difference]: With dead ends: 13432 [2025-03-08 06:26:11,202 INFO L226 Difference]: Without dead ends: 12214 [2025-03-08 06:26:11,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2025-03-08 06:26:11,212 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 1007 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:11,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1988 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:26:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12214 states. [2025-03-08 06:26:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12214 to 2468. [2025-03-08 06:26:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5188488042156465) internal successors, (3747), 2467 states have internal predecessors, (3747), 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 06:26:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3747 transitions. [2025-03-08 06:26:11,347 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3747 transitions. Word has length 64 [2025-03-08 06:26:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:11,348 INFO L471 AbstractCegarLoop]: Abstraction has 2468 states and 3747 transitions. [2025-03-08 06:26:11,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3747 transitions. [2025-03-08 06:26:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 06:26:11,351 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:11,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:26:11,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:26:11,351 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:11,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:11,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1434978885, now seen corresponding path program 1 times [2025-03-08 06:26:11,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:11,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848976432] [2025-03-08 06:26:11,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:11,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:11,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 06:26:11,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 06:26:11,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:11,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:11,493 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 06:26:11,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848976432] [2025-03-08 06:26:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848976432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:11,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:26:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70095627] [2025-03-08 06:26:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:11,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:26:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:11,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:26:11,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:26:11,496 INFO L87 Difference]: Start difference. First operand 2468 states and 3747 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:11,548 INFO L93 Difference]: Finished difference Result 6074 states and 9239 transitions. [2025-03-08 06:26:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:26:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 06:26:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:11,565 INFO L225 Difference]: With dead ends: 6074 [2025-03-08 06:26:11,565 INFO L226 Difference]: Without dead ends: 3640 [2025-03-08 06:26:11,569 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 06:26:11,571 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 56 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:11,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 249 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:26:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2025-03-08 06:26:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3638. [2025-03-08 06:26:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.5059114654935386) internal successors, (5477), 3637 states have internal predecessors, (5477), 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 06:26:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5477 transitions. [2025-03-08 06:26:11,647 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5477 transitions. Word has length 66 [2025-03-08 06:26:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:11,647 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 5477 transitions. [2025-03-08 06:26:11,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5477 transitions. [2025-03-08 06:26:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 06:26:11,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:11,649 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:26:11,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:26:11,649 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:11,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1436140734, now seen corresponding path program 1 times [2025-03-08 06:26:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:11,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633836351] [2025-03-08 06:26:11,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:11,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 06:26:11,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 06:26:11,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:11,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:11,945 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 06:26:11,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633836351] [2025-03-08 06:26:11,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633836351] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:11,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:11,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 06:26:11,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83918319] [2025-03-08 06:26:11,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:11,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 06:26:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:11,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 06:26:11,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 06:26:11,947 INFO L87 Difference]: Start difference. First operand 3638 states and 5477 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:12,106 INFO L93 Difference]: Finished difference Result 7242 states and 10919 transitions. [2025-03-08 06:26:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 06:26:12,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 06:26:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:12,115 INFO L225 Difference]: With dead ends: 7242 [2025-03-08 06:26:12,116 INFO L226 Difference]: Without dead ends: 3640 [2025-03-08 06:26:12,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-03-08 06:26:12,120 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 142 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:12,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 493 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:26:12,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2025-03-08 06:26:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3638. [2025-03-08 06:26:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4927137750893593) internal successors, (5429), 3637 states have internal predecessors, (5429), 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 06:26:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5429 transitions. [2025-03-08 06:26:12,178 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5429 transitions. Word has length 66 [2025-03-08 06:26:12,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:12,178 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 5429 transitions. [2025-03-08 06:26:12,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:12,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5429 transitions. [2025-03-08 06:26:12,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 06:26:12,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:12,180 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:26:12,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:26:12,180 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:12,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1571645163, now seen corresponding path program 1 times [2025-03-08 06:26:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:12,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3294568] [2025-03-08 06:26:12,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:12,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:12,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 06:26:12,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 06:26:12,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:12,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:12,452 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 06:26:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3294568] [2025-03-08 06:26:12,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3294568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:12,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:12,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:26:12,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963116463] [2025-03-08 06:26:12,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:12,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:26:12,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:12,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:26:12,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:26:12,454 INFO L87 Difference]: Start difference. First operand 3638 states and 5429 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:12,480 INFO L93 Difference]: Finished difference Result 3768 states and 5622 transitions. [2025-03-08 06:26:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 06:26:12,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-08 06:26:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:12,494 INFO L225 Difference]: With dead ends: 3768 [2025-03-08 06:26:12,494 INFO L226 Difference]: Without dead ends: 3766 [2025-03-08 06:26:12,496 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 06:26:12,496 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:12,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 492 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:26:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2025-03-08 06:26:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3766. [2025-03-08 06:26:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3765 states have (on average 1.4717131474103586) internal successors, (5541), 3765 states have internal predecessors, (5541), 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 06:26:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5541 transitions. [2025-03-08 06:26:12,567 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5541 transitions. Word has length 67 [2025-03-08 06:26:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:12,568 INFO L471 AbstractCegarLoop]: Abstraction has 3766 states and 5541 transitions. [2025-03-08 06:26:12,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5541 transitions. [2025-03-08 06:26:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 06:26:12,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:12,570 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 06:26:12,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 06:26:12,570 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:12,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2054953770, now seen corresponding path program 1 times [2025-03-08 06:26:12,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:12,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934234057] [2025-03-08 06:26:12,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:12,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:12,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 06:26:12,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 06:26:12,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:12,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 06:26:12,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:12,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934234057] [2025-03-08 06:26:12,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934234057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:12,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:12,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 06:26:12,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018783340] [2025-03-08 06:26:12,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:12,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 06:26:12,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:12,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 06:26:12,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 06:26:12,735 INFO L87 Difference]: Start difference. First operand 3766 states and 5541 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 06:26:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:12,909 INFO L93 Difference]: Finished difference Result 21954 states and 32363 transitions. [2025-03-08 06:26:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 06:26:12,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 93 [2025-03-08 06:26:12,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:12,952 INFO L225 Difference]: With dead ends: 21954 [2025-03-08 06:26:12,952 INFO L226 Difference]: Without dead ends: 19392 [2025-03-08 06:26:12,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 06:26:12,964 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 742 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:12,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1184 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:26:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19392 states. [2025-03-08 06:26:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19392 to 6918. [2025-03-08 06:26:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6918 states, 6917 states have (on average 1.4672545901402343) internal successors, (10149), 6917 states have internal predecessors, (10149), 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 06:26:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 10149 transitions. [2025-03-08 06:26:13,130 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 10149 transitions. Word has length 93 [2025-03-08 06:26:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:13,130 INFO L471 AbstractCegarLoop]: Abstraction has 6918 states and 10149 transitions. [2025-03-08 06:26:13,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 06:26:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 10149 transitions. [2025-03-08 06:26:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 06:26:13,132 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:13,132 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 06:26:13,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 06:26:13,132 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:13,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:13,133 INFO L85 PathProgramCache]: Analyzing trace with hash 53930102, now seen corresponding path program 1 times [2025-03-08 06:26:13,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:13,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704404200] [2025-03-08 06:26:13,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:13,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:13,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 06:26:13,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 06:26:13,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:13,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 06:26:13,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:13,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704404200] [2025-03-08 06:26:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704404200] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:13,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:13,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 06:26:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279901324] [2025-03-08 06:26:13,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:13,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 06:26:13,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:13,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 06:26:13,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 06:26:13,304 INFO L87 Difference]: Start difference. First operand 6918 states and 10149 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 06:26:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:13,454 INFO L93 Difference]: Finished difference Result 25682 states and 37835 transitions. [2025-03-08 06:26:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 06:26:13,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 93 [2025-03-08 06:26:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:13,491 INFO L225 Difference]: With dead ends: 25682 [2025-03-08 06:26:13,491 INFO L226 Difference]: Without dead ends: 21952 [2025-03-08 06:26:13,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 06:26:13,503 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 743 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:13,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1143 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:26:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21952 states. [2025-03-08 06:26:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21952 to 11926. [2025-03-08 06:26:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11926 states, 11925 states have (on average 1.4642348008385744) internal successors, (17461), 11925 states have internal predecessors, (17461), 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 06:26:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11926 states to 11926 states and 17461 transitions. [2025-03-08 06:26:13,738 INFO L78 Accepts]: Start accepts. Automaton has 11926 states and 17461 transitions. Word has length 93 [2025-03-08 06:26:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:13,739 INFO L471 AbstractCegarLoop]: Abstraction has 11926 states and 17461 transitions. [2025-03-08 06:26:13,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 06:26:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 11926 states and 17461 transitions. [2025-03-08 06:26:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 06:26:13,742 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:13,742 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 06:26:13,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 06:26:13,742 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:13,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1698479126, now seen corresponding path program 1 times [2025-03-08 06:26:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034247725] [2025-03-08 06:26:13,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:13,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 06:26:13,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 06:26:13,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:13,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 06:26:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034247725] [2025-03-08 06:26:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034247725] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:13,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:13,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 06:26:13,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060113715] [2025-03-08 06:26:13,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:13,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 06:26:13,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:13,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 06:26:13,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 06:26:13,893 INFO L87 Difference]: Start difference. First operand 11926 states and 17461 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:14,040 INFO L93 Difference]: Finished difference Result 29410 states and 43291 transitions. [2025-03-08 06:26:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 06:26:14,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-03-08 06:26:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:14,119 INFO L225 Difference]: With dead ends: 29410 [2025-03-08 06:26:14,119 INFO L226 Difference]: Without dead ends: 25680 [2025-03-08 06:26:14,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 06:26:14,125 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 774 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:14,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1095 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:26:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25680 states. [2025-03-08 06:26:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25680 to 15654. [2025-03-08 06:26:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15654 states, 15653 states have (on average 1.4640643966012905) internal successors, (22917), 15653 states have internal predecessors, (22917), 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 06:26:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15654 states to 15654 states and 22917 transitions. [2025-03-08 06:26:14,369 INFO L78 Accepts]: Start accepts. Automaton has 15654 states and 22917 transitions. Word has length 93 [2025-03-08 06:26:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:14,369 INFO L471 AbstractCegarLoop]: Abstraction has 15654 states and 22917 transitions. [2025-03-08 06:26:14,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:26:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 15654 states and 22917 transitions. [2025-03-08 06:26:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 06:26:14,372 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:14,372 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 06:26:14,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 06:26:14,372 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:14,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash -444768330, now seen corresponding path program 1 times [2025-03-08 06:26:14,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:14,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297204913] [2025-03-08 06:26:14,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:14,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 06:26:14,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 06:26:14,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:14,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 06:26:14,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297204913] [2025-03-08 06:26:14,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297204913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:14,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:14,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 06:26:14,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654155000] [2025-03-08 06:26:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:14,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 06:26:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:14,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 06:26:14,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 06:26:14,500 INFO L87 Difference]: Start difference. First operand 15654 states and 22917 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 06:26:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:14,665 INFO L93 Difference]: Finished difference Result 33138 states and 48747 transitions. [2025-03-08 06:26:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 06:26:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 93 [2025-03-08 06:26:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:14,764 INFO L225 Difference]: With dead ends: 33138 [2025-03-08 06:26:14,765 INFO L226 Difference]: Without dead ends: 29408 [2025-03-08 06:26:14,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 06:26:14,770 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 825 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:14,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1102 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:26:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2025-03-08 06:26:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 19382. [2025-03-08 06:26:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19382 states, 19381 states have (on average 1.4639595480109386) internal successors, (28373), 19381 states have internal predecessors, (28373), 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 06:26:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19382 states to 19382 states and 28373 transitions. [2025-03-08 06:26:15,014 INFO L78 Accepts]: Start accepts. Automaton has 19382 states and 28373 transitions. Word has length 93 [2025-03-08 06:26:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:15,014 INFO L471 AbstractCegarLoop]: Abstraction has 19382 states and 28373 transitions. [2025-03-08 06:26:15,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 06:26:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 19382 states and 28373 transitions. [2025-03-08 06:26:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 06:26:15,020 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:15,020 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 06:26:15,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 06:26:15,021 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:15,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash -236924074, now seen corresponding path program 1 times [2025-03-08 06:26:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791370968] [2025-03-08 06:26:15,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:15,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 06:26:15,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 06:26:15,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:15,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 06:26:15,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:15,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791370968] [2025-03-08 06:26:15,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791370968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:26:15,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:26:15,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 06:26:15,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430655419] [2025-03-08 06:26:15,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:26:15,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 06:26:15,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:15,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 06:26:15,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 06:26:15,189 INFO L87 Difference]: Start difference. First operand 19382 states and 28373 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 06:26:15,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:15,395 INFO L93 Difference]: Finished difference Result 36866 states and 54203 transitions. [2025-03-08 06:26:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 06:26:15,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 93 [2025-03-08 06:26:15,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:15,453 INFO L225 Difference]: With dead ends: 36866 [2025-03-08 06:26:15,453 INFO L226 Difference]: Without dead ends: 33136 [2025-03-08 06:26:15,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 06:26:15,468 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 756 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:15,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1176 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:26:15,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33136 states. [2025-03-08 06:26:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33136 to 23110. [2025-03-08 06:26:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23110 states, 23109 states have (on average 1.4638885282790255) internal successors, (33829), 23109 states have internal predecessors, (33829), 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 06:26:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23110 states to 23110 states and 33829 transitions. [2025-03-08 06:26:15,895 INFO L78 Accepts]: Start accepts. Automaton has 23110 states and 33829 transitions. Word has length 93 [2025-03-08 06:26:15,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:15,895 INFO L471 AbstractCegarLoop]: Abstraction has 23110 states and 33829 transitions. [2025-03-08 06:26:15,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 06:26:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 23110 states and 33829 transitions. [2025-03-08 06:26:15,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 06:26:15,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:15,899 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 06:26:15,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 06:26:15,899 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:15,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2080737126, now seen corresponding path program 1 times [2025-03-08 06:26:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307358843] [2025-03-08 06:26:15,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:15,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 06:26:15,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 06:26:15,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:15,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:26:16,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:16,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307358843] [2025-03-08 06:26:16,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307358843] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:26:16,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015304855] [2025-03-08 06:26:16,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:16,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:26:16,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:26:16,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:26:16,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 06:26:16,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 06:26:16,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 06:26:16,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:16,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:16,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 06:26:16,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:26:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 06:26:16,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 06:26:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 06:26:17,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015304855] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 06:26:17,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 06:26:17,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 4] total 19 [2025-03-08 06:26:17,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364927895] [2025-03-08 06:26:17,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 06:26:17,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 06:26:17,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:17,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 06:26:17,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2025-03-08 06:26:17,161 INFO L87 Difference]: Start difference. First operand 23110 states and 33829 transitions. Second operand has 19 states, 19 states have (on average 14.105263157894736) internal successors, (268), 19 states have internal predecessors, (268), 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 06:26:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:21,116 INFO L93 Difference]: Finished difference Result 245572 states and 357532 transitions. [2025-03-08 06:26:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-03-08 06:26:21,117 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.105263157894736) internal successors, (268), 19 states have internal predecessors, (268), 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 94 [2025-03-08 06:26:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:21,459 INFO L225 Difference]: With dead ends: 245572 [2025-03-08 06:26:21,459 INFO L226 Difference]: Without dead ends: 222498 [2025-03-08 06:26:21,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5930 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2451, Invalid=12311, Unknown=0, NotChecked=0, Total=14762 [2025-03-08 06:26:21,517 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 6109 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6109 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:21,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6109 Valid, 1558 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 06:26:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222498 states. [2025-03-08 06:26:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222498 to 161786. [2025-03-08 06:26:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161786 states, 161785 states have (on average 1.4313873350434219) internal successors, (231577), 161785 states have internal predecessors, (231577), 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 06:26:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161786 states to 161786 states and 231577 transitions. [2025-03-08 06:26:24,047 INFO L78 Accepts]: Start accepts. Automaton has 161786 states and 231577 transitions. Word has length 94 [2025-03-08 06:26:24,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:26:24,047 INFO L471 AbstractCegarLoop]: Abstraction has 161786 states and 231577 transitions. [2025-03-08 06:26:24,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.105263157894736) internal successors, (268), 19 states have internal predecessors, (268), 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 06:26:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 161786 states and 231577 transitions. [2025-03-08 06:26:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 06:26:24,053 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:26:24,053 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 06:26:24,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 06:26:24,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 06:26:24,257 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:26:24,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:26:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1574947762, now seen corresponding path program 1 times [2025-03-08 06:26:24,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:26:24,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632959542] [2025-03-08 06:26:24,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:24,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:26:24,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 06:26:24,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 06:26:24,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:24,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:26:24,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:26:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632959542] [2025-03-08 06:26:24,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632959542] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:26:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386534775] [2025-03-08 06:26:24,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:26:24,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:26:24,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:26:24,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:26:24,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 06:26:24,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 06:26:24,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 06:26:24,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:26:24,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:26:24,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 06:26:24,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:26:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:26:25,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 06:26:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:26:25,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386534775] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 06:26:25,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 06:26:25,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-08 06:26:25,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443680249] [2025-03-08 06:26:25,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 06:26:25,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 06:26:25,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:26:25,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 06:26:25,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2025-03-08 06:26:25,864 INFO L87 Difference]: Start difference. First operand 161786 states and 231577 transitions. Second operand has 25 states, 25 states have (on average 10.56) internal successors, (264), 24 states have internal predecessors, (264), 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 06:26:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:26:36,799 INFO L93 Difference]: Finished difference Result 2440306 states and 3490389 transitions. [2025-03-08 06:26:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2025-03-08 06:26:36,799 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.56) internal successors, (264), 24 states have internal predecessors, (264), 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 95 [2025-03-08 06:26:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:26:40,940 INFO L225 Difference]: With dead ends: 2440306 [2025-03-08 06:26:40,940 INFO L226 Difference]: Without dead ends: 2278556 [2025-03-08 06:26:41,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10769 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3884, Invalid=24508, Unknown=0, NotChecked=0, Total=28392 [2025-03-08 06:26:41,334 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 4283 mSDsluCounter, 2419 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 3795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-08 06:26:41,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 2602 Invalid, 3795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3747 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-08 06:26:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278556 states. [2025-03-08 06:26:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278556 to 904210. [2025-03-08 06:26:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904210 states, 904209 states have (on average 1.399443049118069) internal successors, (1265389), 904209 states have internal predecessors, (1265389), 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 06:27:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904210 states to 904210 states and 1265389 transitions. [2025-03-08 06:27:00,802 INFO L78 Accepts]: Start accepts. Automaton has 904210 states and 1265389 transitions. Word has length 95 [2025-03-08 06:27:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:27:00,802 INFO L471 AbstractCegarLoop]: Abstraction has 904210 states and 1265389 transitions. [2025-03-08 06:27:00,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.56) internal successors, (264), 24 states have internal predecessors, (264), 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 06:27:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 904210 states and 1265389 transitions. [2025-03-08 06:27:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 06:27:00,818 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:27:00,818 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 06:27:00,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 06:27:01,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 06:27:01,023 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:27:01,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:27:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1899051334, now seen corresponding path program 1 times [2025-03-08 06:27:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:27:01,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723796434] [2025-03-08 06:27:01,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:27:01,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:27:01,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 06:27:01,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 06:27:01,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:27:01,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:27:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 06:27:01,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:27:01,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723796434] [2025-03-08 06:27:01,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723796434] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:27:01,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:27:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:27:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581770287] [2025-03-08 06:27:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:27:01,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:27:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:27:01,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:27:01,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:27:01,073 INFO L87 Difference]: Start difference. First operand 904210 states and 1265389 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)