./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.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.7.1.ufo.BOUNDED-14.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 3cf612fb43c98d640569a1c9328794313185fe1b6a4dbfc7e502cbb16fa8754d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:28:29,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:28:29,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:28:29,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:28:29,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:28:29,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:28:29,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:28:29,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:28:29,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:28:29,624 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:28:29,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:28:29,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:28:29,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:28:29,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:28:29,625 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:28:29,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:28:29,626 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:28:29,627 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:28:29,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:28:29,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:28:29,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:28:29,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:28:29,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:28:29,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:28:29,627 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:28:29,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:28:29,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:28:29,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:28:29,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:28:29,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:28:29,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:28:29,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:28:29,628 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 -> 3cf612fb43c98d640569a1c9328794313185fe1b6a4dbfc7e502cbb16fa8754d [2025-03-08 06:28:29,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:28:29,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:28:29,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:28:29,849 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:28:29,850 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:28:29,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2025-03-08 06:28:30,922 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548703644/3defdb52b2ef4a67b6112147a9ee6644/FLAG0fe6f0372 [2025-03-08 06:28:31,153 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:28:31,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2025-03-08 06:28:31,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548703644/3defdb52b2ef4a67b6112147a9ee6644/FLAG0fe6f0372 [2025-03-08 06:28:31,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548703644/3defdb52b2ef4a67b6112147a9ee6644 [2025-03-08 06:28:31,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:28:31,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:28:31,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:28:31,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:28:31,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:28:31,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b657fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31, skipping insertion in model container [2025-03-08 06:28:31,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:28:31,684 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.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7633,7646] [2025-03-08 06:28:31,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:28:31,733 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:28:31,766 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.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7633,7646] [2025-03-08 06:28:31,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:28:31,792 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:28:31,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31 WrapperNode [2025-03-08 06:28:31,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:28:31,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:28:31,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:28:31,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:28:31,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,837 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 630 [2025-03-08 06:28:31,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:28:31,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:28:31,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:28:31,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:28:31,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,852 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,869 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 06:28:31,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,876 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:28:31,883 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:28:31,883 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:28:31,883 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:28:31,884 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (1/1) ... [2025-03-08 06:28:31,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:28:31,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:28:31,916 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 06:28:31,919 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 06:28:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:28:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:28:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:28:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:28:32,044 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:28:32,045 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L680: havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L500: havoc main_~node6____CPAchecker_TMP_0~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L635: havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L455: havoc main_~node7____CPAchecker_TMP_0~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L340: havoc main_~node7__m7~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L325: havoc main_~node6__m6~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L590: havoc main_~node4____CPAchecker_TMP_0~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L310: havoc main_~node5__m5~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L295: havoc main_~node4__m4~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L395: 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 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L280: havoc main_~node3__m3~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L726: havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L545: havoc main_~node5____CPAchecker_TMP_0~0#1; [2025-03-08 06:28:32,532 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L265: havoc main_~node2__m2~0#1; [2025-03-08 06:28:32,533 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L249: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2025-03-08 06:28:32,556 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2025-03-08 06:28:32,556 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:28:32,569 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:28:32,569 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:28:32,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:28:32 BoogieIcfgContainer [2025-03-08 06:28:32,569 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:28:32,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:28:32,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:28:32,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:28:32,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:28:31" (1/3) ... [2025-03-08 06:28:32,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10db04cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:28:32, skipping insertion in model container [2025-03-08 06:28:32,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:28:31" (2/3) ... [2025-03-08 06:28:32,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10db04cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:28:32, skipping insertion in model container [2025-03-08 06:28:32,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:28:32" (3/3) ... [2025-03-08 06:28:32,579 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2025-03-08 06:28:32,589 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:28:32,591 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c that has 1 procedures, 136 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 06:28:32,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:28:32,655 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;@5e659277, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:28:32,655 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 06:28:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.7537313432835822) internal successors, (235), 135 states have internal predecessors, (235), 0 states have call successors, (0), 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 06:28:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-08 06:28:32,667 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:32,667 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:32,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:32,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:32,672 INFO L85 PathProgramCache]: Analyzing trace with hash -550288976, now seen corresponding path program 1 times [2025-03-08 06:28:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:32,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900787604] [2025-03-08 06:28:32,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:32,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-08 06:28:32,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-08 06:28:32,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:32,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:33,021 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 06:28:33,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:33,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900787604] [2025-03-08 06:28:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900787604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:33,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:33,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:28:33,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261009319] [2025-03-08 06:28:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:33,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:28:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:33,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:28:33,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:28:33,040 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.7537313432835822) internal successors, (235), 135 states have internal predecessors, (235), 0 states have call successors, (0), 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 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 06:28:33,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:33,084 INFO L93 Difference]: Finished difference Result 294 states and 484 transitions. [2025-03-08 06:28:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:28:33,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2025-03-08 06:28:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:33,093 INFO L225 Difference]: With dead ends: 294 [2025-03-08 06:28:33,094 INFO L226 Difference]: Without dead ends: 205 [2025-03-08 06:28:33,096 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 06:28:33,097 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 166 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 475 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 06:28:33,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 475 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-03-08 06:28:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2025-03-08 06:28:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.4455445544554455) internal successors, (292), 202 states have internal predecessors, (292), 0 states have call successors, (0), 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 06:28:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 292 transitions. [2025-03-08 06:28:33,128 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 292 transitions. Word has length 86 [2025-03-08 06:28:33,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:33,128 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 292 transitions. [2025-03-08 06:28:33,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 06:28:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 292 transitions. [2025-03-08 06:28:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-08 06:28:33,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:33,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:33,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:28:33,130 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:33,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash -133436541, now seen corresponding path program 1 times [2025-03-08 06:28:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076995477] [2025-03-08 06:28:33,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:33,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-08 06:28:33,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-08 06:28:33,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:33,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:33,316 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 06:28:33,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076995477] [2025-03-08 06:28:33,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076995477] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:33,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:33,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:28:33,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904604825] [2025-03-08 06:28:33,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:33,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:28:33,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:33,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:28:33,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:28:33,318 INFO L87 Difference]: Start difference. First operand 203 states and 292 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 06:28:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:33,343 INFO L93 Difference]: Finished difference Result 487 states and 744 transitions. [2025-03-08 06:28:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:28:33,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2025-03-08 06:28:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:33,345 INFO L225 Difference]: With dead ends: 487 [2025-03-08 06:28:33,345 INFO L226 Difference]: Without dead ends: 337 [2025-03-08 06:28:33,346 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 06:28:33,346 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 112 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 408 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 06:28:33,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 408 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:33,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2025-03-08 06:28:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2025-03-08 06:28:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.5029940119760479) internal successors, (502), 334 states have internal predecessors, (502), 0 states have call successors, (0), 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 06:28:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 502 transitions. [2025-03-08 06:28:33,357 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 502 transitions. Word has length 87 [2025-03-08 06:28:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:33,360 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 502 transitions. [2025-03-08 06:28:33,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 06:28:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 502 transitions. [2025-03-08 06:28:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 06:28:33,361 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:33,361 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:33,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:28:33,361 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:33,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:33,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1768129219, now seen corresponding path program 1 times [2025-03-08 06:28:33,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:33,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148789839] [2025-03-08 06:28:33,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:33,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:33,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 06:28:33,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 06:28:33,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:33,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:33,493 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 06:28:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148789839] [2025-03-08 06:28:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148789839] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:33,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:33,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:28:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850331175] [2025-03-08 06:28:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:33,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:28:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:33,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:28:33,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:28:33,494 INFO L87 Difference]: Start difference. First operand 335 states and 502 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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 06:28:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:33,518 INFO L93 Difference]: Finished difference Result 867 states and 1348 transitions. [2025-03-08 06:28:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:28:33,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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 88 [2025-03-08 06:28:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:33,520 INFO L225 Difference]: With dead ends: 867 [2025-03-08 06:28:33,520 INFO L226 Difference]: Without dead ends: 585 [2025-03-08 06:28:33,521 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 06:28:33,522 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 107 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 404 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 06:28:33,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 404 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-03-08 06:28:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 583. [2025-03-08 06:28:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 1.5360824742268042) internal successors, (894), 582 states have internal predecessors, (894), 0 states have call successors, (0), 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 06:28:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 894 transitions. [2025-03-08 06:28:33,539 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 894 transitions. Word has length 88 [2025-03-08 06:28:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:33,539 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 894 transitions. [2025-03-08 06:28:33,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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 06:28:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 894 transitions. [2025-03-08 06:28:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:28:33,540 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:33,540 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:33,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:28:33,541 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:33,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash -19676560, now seen corresponding path program 1 times [2025-03-08 06:28:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027409884] [2025-03-08 06:28:33,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:33,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:33,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:28:33,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:28:33,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:33,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:33,632 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 06:28:33,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027409884] [2025-03-08 06:28:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027409884] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:33,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:33,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:28:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222446526] [2025-03-08 06:28:33,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:33,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:28:33,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:33,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:28:33,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:28:33,634 INFO L87 Difference]: Start difference. First operand 583 states and 894 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 06:28:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:33,653 INFO L93 Difference]: Finished difference Result 1579 states and 2472 transitions. [2025-03-08 06:28:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:28:33,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 89 [2025-03-08 06:28:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:33,657 INFO L225 Difference]: With dead ends: 1579 [2025-03-08 06:28:33,657 INFO L226 Difference]: Without dead ends: 1049 [2025-03-08 06:28:33,658 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 06:28:33,659 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 102 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 400 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 06:28:33,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 400 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2025-03-08 06:28:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1047. [2025-03-08 06:28:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 1.5506692160611855) internal successors, (1622), 1046 states have internal predecessors, (1622), 0 states have call successors, (0), 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 06:28:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1622 transitions. [2025-03-08 06:28:33,677 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1622 transitions. Word has length 89 [2025-03-08 06:28:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:33,677 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1622 transitions. [2025-03-08 06:28:33,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 06:28:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1622 transitions. [2025-03-08 06:28:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-08 06:28:33,678 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:33,678 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:33,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:28:33,678 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:33,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -986734134, now seen corresponding path program 1 times [2025-03-08 06:28:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:33,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964799670] [2025-03-08 06:28:33,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:33,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-08 06:28:33,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 06:28:33,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:33,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:33,756 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 06:28:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964799670] [2025-03-08 06:28:33,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964799670] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:33,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:33,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:28:33,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491873137] [2025-03-08 06:28:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:33,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:28:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:33,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:28:33,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:28:33,759 INFO L87 Difference]: Start difference. First operand 1047 states and 1622 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:33,786 INFO L93 Difference]: Finished difference Result 2907 states and 4552 transitions. [2025-03-08 06:28:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:28:33,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-08 06:28:33,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:33,793 INFO L225 Difference]: With dead ends: 2907 [2025-03-08 06:28:33,793 INFO L226 Difference]: Without dead ends: 1913 [2025-03-08 06:28:33,794 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 06:28:33,796 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 97 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 396 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 06:28:33,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 396 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2025-03-08 06:28:33,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1911. [2025-03-08 06:28:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 1.5528795811518326) internal successors, (2966), 1910 states have internal predecessors, (2966), 0 states have call successors, (0), 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 06:28:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2966 transitions. [2025-03-08 06:28:33,842 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2966 transitions. Word has length 90 [2025-03-08 06:28:33,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:33,843 INFO L471 AbstractCegarLoop]: Abstraction has 1911 states and 2966 transitions. [2025-03-08 06:28:33,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2966 transitions. [2025-03-08 06:28:33,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-08 06:28:33,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:33,844 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:33,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:28:33,845 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:33,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 186796637, now seen corresponding path program 1 times [2025-03-08 06:28:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:33,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497005869] [2025-03-08 06:28:33,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:33,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-08 06:28:33,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-08 06:28:33,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:33,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:33,930 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 06:28:33,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497005869] [2025-03-08 06:28:33,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497005869] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:33,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:33,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:28:33,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774812334] [2025-03-08 06:28:33,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:33,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:28:33,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:33,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:28:33,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:28:33,932 INFO L87 Difference]: Start difference. First operand 1911 states and 2966 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 06:28:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:33,961 INFO L93 Difference]: Finished difference Result 5371 states and 8376 transitions. [2025-03-08 06:28:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:28:33,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2025-03-08 06:28:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:33,972 INFO L225 Difference]: With dead ends: 5371 [2025-03-08 06:28:33,972 INFO L226 Difference]: Without dead ends: 3513 [2025-03-08 06:28:33,976 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 06:28:33,977 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 92 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 392 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 06:28:33,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 392 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3513 states. [2025-03-08 06:28:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3513 to 3511. [2025-03-08 06:28:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 3510 states have (on average 1.547008547008547) internal successors, (5430), 3510 states have internal predecessors, (5430), 0 states have call successors, (0), 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 06:28:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 5430 transitions. [2025-03-08 06:28:34,039 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 5430 transitions. Word has length 91 [2025-03-08 06:28:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:34,040 INFO L471 AbstractCegarLoop]: Abstraction has 3511 states and 5430 transitions. [2025-03-08 06:28:34,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 06:28:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 5430 transitions. [2025-03-08 06:28:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-08 06:28:34,041 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:34,042 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:34,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:28:34,042 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:34,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash -791823816, now seen corresponding path program 1 times [2025-03-08 06:28:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:34,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615612085] [2025-03-08 06:28:34,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:34,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:34,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 06:28:34,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 06:28:34,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:34,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:34,147 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 06:28:34,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:34,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615612085] [2025-03-08 06:28:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615612085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:34,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:34,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:28:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017205568] [2025-03-08 06:28:34,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:34,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:28:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:34,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:28:34,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:28:34,150 INFO L87 Difference]: Start difference. First operand 3511 states and 5430 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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 06:28:34,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:34,201 INFO L93 Difference]: Finished difference Result 9915 states and 15352 transitions. [2025-03-08 06:28:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:28:34,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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 92 [2025-03-08 06:28:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:34,222 INFO L225 Difference]: With dead ends: 9915 [2025-03-08 06:28:34,222 INFO L226 Difference]: Without dead ends: 6457 [2025-03-08 06:28:34,227 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 06:28:34,229 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 87 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 388 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 06:28:34,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 388 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2025-03-08 06:28:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6455. [2025-03-08 06:28:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6455 states, 6454 states have (on average 1.5354818717074683) internal successors, (9910), 6454 states have internal predecessors, (9910), 0 states have call successors, (0), 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 06:28:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6455 states to 6455 states and 9910 transitions. [2025-03-08 06:28:34,390 INFO L78 Accepts]: Start accepts. Automaton has 6455 states and 9910 transitions. Word has length 92 [2025-03-08 06:28:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:34,390 INFO L471 AbstractCegarLoop]: Abstraction has 6455 states and 9910 transitions. [2025-03-08 06:28:34,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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 06:28:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6455 states and 9910 transitions. [2025-03-08 06:28:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 06:28:34,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:34,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:34,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:28:34,392 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:34,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1286482807, now seen corresponding path program 1 times [2025-03-08 06:28:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:34,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372476661] [2025-03-08 06:28:34,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:34,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 06:28:34,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 06:28:34,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:34,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:34,650 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 06:28:34,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:34,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372476661] [2025-03-08 06:28:34,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372476661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:34,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:34,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245544213] [2025-03-08 06:28:34,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:34,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:34,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:34,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:34,652 INFO L87 Difference]: Start difference. First operand 6455 states and 9910 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 06:28:35,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:35,238 INFO L93 Difference]: Finished difference Result 96083 states and 147908 transitions. [2025-03-08 06:28:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 06:28:35,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 06:28:35,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:35,411 INFO L225 Difference]: With dead ends: 96083 [2025-03-08 06:28:35,411 INFO L226 Difference]: Without dead ends: 89681 [2025-03-08 06:28:35,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2025-03-08 06:28:35,447 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 1949 mSDsluCounter, 4856 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 5032 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:35,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 5032 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:28:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89681 states. [2025-03-08 06:28:36,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89681 to 12855. [2025-03-08 06:28:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12855 states, 12854 states have (on average 1.5178154660028007) internal successors, (19510), 12854 states have internal predecessors, (19510), 0 states have call successors, (0), 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 06:28:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12855 states to 12855 states and 19510 transitions. [2025-03-08 06:28:36,403 INFO L78 Accepts]: Start accepts. Automaton has 12855 states and 19510 transitions. Word has length 93 [2025-03-08 06:28:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:36,403 INFO L471 AbstractCegarLoop]: Abstraction has 12855 states and 19510 transitions. [2025-03-08 06:28:36,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 06:28:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 12855 states and 19510 transitions. [2025-03-08 06:28:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 06:28:36,404 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:36,404 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:36,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:28:36,404 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:36,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:36,405 INFO L85 PathProgramCache]: Analyzing trace with hash 679487282, now seen corresponding path program 1 times [2025-03-08 06:28:36,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:36,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269675119] [2025-03-08 06:28:36,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:36,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:36,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 06:28:36,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 06:28:36,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:36,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:36,495 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 06:28:36,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:36,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269675119] [2025-03-08 06:28:36,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269675119] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:36,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:36,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:28:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206004687] [2025-03-08 06:28:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:36,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:28:36,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:36,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:28:36,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:28:36,496 INFO L87 Difference]: Start difference. First operand 12855 states and 19510 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 06:28:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:36,567 INFO L93 Difference]: Finished difference Result 31869 states and 48378 transitions. [2025-03-08 06:28:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:28:36,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 06:28:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:36,595 INFO L225 Difference]: With dead ends: 31869 [2025-03-08 06:28:36,595 INFO L226 Difference]: Without dead ends: 19067 [2025-03-08 06:28:36,611 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 06:28:36,612 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 78 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 348 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 06:28:36,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 348 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:36,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19067 states. [2025-03-08 06:28:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19067 to 19065. [2025-03-08 06:28:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19065 states, 19064 states have (on average 1.506924045321024) internal successors, (28728), 19064 states have internal predecessors, (28728), 0 states have call successors, (0), 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 06:28:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19065 states to 19065 states and 28728 transitions. [2025-03-08 06:28:36,889 INFO L78 Accepts]: Start accepts. Automaton has 19065 states and 28728 transitions. Word has length 95 [2025-03-08 06:28:36,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:36,890 INFO L471 AbstractCegarLoop]: Abstraction has 19065 states and 28728 transitions. [2025-03-08 06:28:36,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 06:28:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 19065 states and 28728 transitions. [2025-03-08 06:28:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 06:28:36,891 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:36,891 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:36,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 06:28:36,891 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:36,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 680649131, now seen corresponding path program 1 times [2025-03-08 06:28:36,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:36,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841832400] [2025-03-08 06:28:36,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:36,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 06:28:36,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 06:28:36,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:36,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:37,294 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 06:28:37,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:37,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841832400] [2025-03-08 06:28:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841832400] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:37,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:37,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079467989] [2025-03-08 06:28:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:37,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:37,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:37,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:37,295 INFO L87 Difference]: Start difference. First operand 19065 states and 28728 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 06:28:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:37,639 INFO L93 Difference]: Finished difference Result 38077 states and 57402 transitions. [2025-03-08 06:28:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:28:37,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 06:28:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:37,668 INFO L225 Difference]: With dead ends: 38077 [2025-03-08 06:28:37,668 INFO L226 Difference]: Without dead ends: 19067 [2025-03-08 06:28:37,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2025-03-08 06:28:37,686 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 376 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:37,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 915 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:28:37,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19067 states. [2025-03-08 06:28:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19067 to 19065. [2025-03-08 06:28:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19065 states, 19064 states have (on average 1.496852706672262) internal successors, (28536), 19064 states have internal predecessors, (28536), 0 states have call successors, (0), 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 06:28:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19065 states to 19065 states and 28536 transitions. [2025-03-08 06:28:38,050 INFO L78 Accepts]: Start accepts. Automaton has 19065 states and 28536 transitions. Word has length 95 [2025-03-08 06:28:38,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:38,050 INFO L471 AbstractCegarLoop]: Abstraction has 19065 states and 28536 transitions. [2025-03-08 06:28:38,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 06:28:38,051 INFO L276 IsEmpty]: Start isEmpty. Operand 19065 states and 28536 transitions. [2025-03-08 06:28:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 06:28:38,051 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:38,051 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:38,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 06:28:38,051 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:38,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash -373758048, now seen corresponding path program 1 times [2025-03-08 06:28:38,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:38,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114872076] [2025-03-08 06:28:38,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:38,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:38,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 06:28:38,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 06:28:38,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:38,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:38,161 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 06:28:38,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:38,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114872076] [2025-03-08 06:28:38,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114872076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:38,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:38,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:28:38,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782163896] [2025-03-08 06:28:38,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:38,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:28:38,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:38,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:28:38,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:28:38,163 INFO L87 Difference]: Start difference. First operand 19065 states and 28536 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:38,300 INFO L93 Difference]: Finished difference Result 38075 states and 57017 transitions. [2025-03-08 06:28:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 06:28:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2025-03-08 06:28:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:38,326 INFO L225 Difference]: With dead ends: 38075 [2025-03-08 06:28:38,326 INFO L226 Difference]: Without dead ends: 19065 [2025-03-08 06:28:38,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 06:28:38,342 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 408 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:38,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 155 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:28:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19065 states. [2025-03-08 06:28:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19065 to 19065. [2025-03-08 06:28:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19065 states, 19064 states have (on average 1.4867813680234998) internal successors, (28344), 19064 states have internal predecessors, (28344), 0 states have call successors, (0), 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 06:28:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19065 states to 19065 states and 28344 transitions. [2025-03-08 06:28:38,529 INFO L78 Accepts]: Start accepts. Automaton has 19065 states and 28344 transitions. Word has length 96 [2025-03-08 06:28:38,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:38,529 INFO L471 AbstractCegarLoop]: Abstraction has 19065 states and 28344 transitions. [2025-03-08 06:28:38,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 19065 states and 28344 transitions. [2025-03-08 06:28:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 06:28:38,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:38,530 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:38,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 06:28:38,530 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:38,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:38,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1416639807, now seen corresponding path program 1 times [2025-03-08 06:28:38,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:38,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041646139] [2025-03-08 06:28:38,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:38,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:38,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 06:28:38,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 06:28:38,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:38,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:38,801 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 06:28:38,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:38,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041646139] [2025-03-08 06:28:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041646139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:38,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:38,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:28:38,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693837010] [2025-03-08 06:28:38,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:38,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:28:38,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:38,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:28:38,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:28:38,802 INFO L87 Difference]: Start difference. First operand 19065 states and 28344 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:38,850 INFO L93 Difference]: Finished difference Result 19579 states and 29113 transitions. [2025-03-08 06:28:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 06:28:38,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2025-03-08 06:28:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:38,873 INFO L225 Difference]: With dead ends: 19579 [2025-03-08 06:28:38,873 INFO L226 Difference]: Without dead ends: 19577 [2025-03-08 06:28:38,879 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 06:28:38,880 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 692 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 06:28:38,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 692 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:28:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19577 states. [2025-03-08 06:28:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19577 to 19577. [2025-03-08 06:28:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19577 states, 19576 states have (on average 1.4707805476093174) internal successors, (28792), 19576 states have internal predecessors, (28792), 0 states have call successors, (0), 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 06:28:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19577 states to 19577 states and 28792 transitions. [2025-03-08 06:28:39,066 INFO L78 Accepts]: Start accepts. Automaton has 19577 states and 28792 transitions. Word has length 96 [2025-03-08 06:28:39,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:39,066 INFO L471 AbstractCegarLoop]: Abstraction has 19577 states and 28792 transitions. [2025-03-08 06:28:39,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 19577 states and 28792 transitions. [2025-03-08 06:28:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 06:28:39,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:39,071 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:39,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 06:28:39,072 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:39,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -125953132, now seen corresponding path program 1 times [2025-03-08 06:28:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:39,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882277496] [2025-03-08 06:28:39,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:39,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:39,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 06:28:39,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 06:28:39,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:39,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 06:28:39,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:39,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882277496] [2025-03-08 06:28:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882277496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944603482] [2025-03-08 06:28:39,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:39,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:39,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:39,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:39,262 INFO L87 Difference]: Start difference. First operand 19577 states and 28792 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 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 06:28:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:39,841 INFO L93 Difference]: Finished difference Result 153609 states and 226016 transitions. [2025-03-08 06:28:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:28:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-08 06:28:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:40,008 INFO L225 Difference]: With dead ends: 153609 [2025-03-08 06:28:40,008 INFO L226 Difference]: Without dead ends: 140295 [2025-03-08 06:28:40,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 06:28:40,056 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 1571 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:40,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 2895 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:28:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140295 states. [2025-03-08 06:28:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140295 to 36025. [2025-03-08 06:28:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36025 states, 36024 states have (on average 1.4663557628247834) internal successors, (52824), 36024 states have internal predecessors, (52824), 0 states have call successors, (0), 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 06:28:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36025 states to 36025 states and 52824 transitions. [2025-03-08 06:28:41,154 INFO L78 Accepts]: Start accepts. Automaton has 36025 states and 52824 transitions. Word has length 130 [2025-03-08 06:28:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:41,154 INFO L471 AbstractCegarLoop]: Abstraction has 36025 states and 52824 transitions. [2025-03-08 06:28:41,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 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 06:28:41,154 INFO L276 IsEmpty]: Start isEmpty. Operand 36025 states and 52824 transitions. [2025-03-08 06:28:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 06:28:41,161 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:41,161 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:41,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 06:28:41,161 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:41,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:41,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1958510796, now seen corresponding path program 1 times [2025-03-08 06:28:41,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:41,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005447529] [2025-03-08 06:28:41,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:41,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:41,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 06:28:41,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 06:28:41,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:41,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 06:28:41,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:41,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005447529] [2025-03-08 06:28:41,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005447529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:41,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:41,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:41,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735767504] [2025-03-08 06:28:41,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:41,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:41,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:41,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:41,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:41,394 INFO L87 Difference]: Start difference. First operand 36025 states and 52824 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 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 06:28:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:41,816 INFO L93 Difference]: Finished difference Result 173129 states and 254624 transitions. [2025-03-08 06:28:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:28:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-08 06:28:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:41,966 INFO L225 Difference]: With dead ends: 173129 [2025-03-08 06:28:41,966 INFO L226 Difference]: Without dead ends: 153607 [2025-03-08 06:28:42,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 06:28:42,016 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 1574 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:42,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 2798 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:28:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153607 states. [2025-03-08 06:28:43,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153607 to 62201. [2025-03-08 06:28:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62201 states, 62200 states have (on average 1.4635369774919613) internal successors, (91032), 62200 states have internal predecessors, (91032), 0 states have call successors, (0), 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 06:28:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62201 states to 62201 states and 91032 transitions. [2025-03-08 06:28:43,196 INFO L78 Accepts]: Start accepts. Automaton has 62201 states and 91032 transitions. Word has length 130 [2025-03-08 06:28:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:43,197 INFO L471 AbstractCegarLoop]: Abstraction has 62201 states and 91032 transitions. [2025-03-08 06:28:43,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 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 06:28:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 62201 states and 91032 transitions. [2025-03-08 06:28:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 06:28:43,206 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:43,206 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:43,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 06:28:43,207 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:43,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash 713798356, now seen corresponding path program 1 times [2025-03-08 06:28:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542475783] [2025-03-08 06:28:43,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:43,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 06:28:43,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 06:28:43,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:43,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 06:28:43,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:43,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542475783] [2025-03-08 06:28:43,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542475783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:43,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:43,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:43,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651126452] [2025-03-08 06:28:43,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:43,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:43,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:43,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:43,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:43,386 INFO L87 Difference]: Start difference. First operand 62201 states and 91032 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:44,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:44,165 INFO L93 Difference]: Finished difference Result 192649 states and 283168 transitions. [2025-03-08 06:28:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:28:44,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-08 06:28:44,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:44,344 INFO L225 Difference]: With dead ends: 192649 [2025-03-08 06:28:44,344 INFO L226 Difference]: Without dead ends: 173127 [2025-03-08 06:28:44,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 06:28:44,391 INFO L435 NwaCegarLoop]: 303 mSDtfsCounter, 1603 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:44,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 2724 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:28:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173127 states. [2025-03-08 06:28:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173127 to 81721. [2025-03-08 06:28:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81721 states, 81720 states have (on average 1.463240332843857) internal successors, (119576), 81720 states have internal predecessors, (119576), 0 states have call successors, (0), 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 06:28:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81721 states to 81721 states and 119576 transitions. [2025-03-08 06:28:45,852 INFO L78 Accepts]: Start accepts. Automaton has 81721 states and 119576 transitions. Word has length 130 [2025-03-08 06:28:45,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:45,852 INFO L471 AbstractCegarLoop]: Abstraction has 81721 states and 119576 transitions. [2025-03-08 06:28:45,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:45,853 INFO L276 IsEmpty]: Start isEmpty. Operand 81721 states and 119576 transitions. [2025-03-08 06:28:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 06:28:45,862 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:45,862 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:45,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 06:28:45,862 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:45,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1472285068, now seen corresponding path program 1 times [2025-03-08 06:28:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184848406] [2025-03-08 06:28:45,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:45,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 06:28:45,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 06:28:45,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:45,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 06:28:46,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:46,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184848406] [2025-03-08 06:28:46,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184848406] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:46,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:46,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:46,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893680133] [2025-03-08 06:28:46,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:46,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:46,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:46,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:46,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:46,051 INFO L87 Difference]: Start difference. First operand 81721 states and 119576 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 06:28:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:46,958 INFO L93 Difference]: Finished difference Result 212169 states and 311712 transitions. [2025-03-08 06:28:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:28:46,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-08 06:28:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:47,153 INFO L225 Difference]: With dead ends: 212169 [2025-03-08 06:28:47,154 INFO L226 Difference]: Without dead ends: 192647 [2025-03-08 06:28:47,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 06:28:47,196 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 1656 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:47,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2629 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:28:47,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192647 states. [2025-03-08 06:28:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192647 to 101241. [2025-03-08 06:28:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101241 states, 101240 states have (on average 1.4630580798103516) internal successors, (148120), 101240 states have internal predecessors, (148120), 0 states have call successors, (0), 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 06:28:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101241 states to 101241 states and 148120 transitions. [2025-03-08 06:28:48,696 INFO L78 Accepts]: Start accepts. Automaton has 101241 states and 148120 transitions. Word has length 130 [2025-03-08 06:28:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:48,696 INFO L471 AbstractCegarLoop]: Abstraction has 101241 states and 148120 transitions. [2025-03-08 06:28:48,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 06:28:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 101241 states and 148120 transitions. [2025-03-08 06:28:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 06:28:48,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:48,705 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:48,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 06:28:48,705 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:48,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash 172263956, now seen corresponding path program 1 times [2025-03-08 06:28:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442910441] [2025-03-08 06:28:48,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:48,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:48,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 06:28:48,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 06:28:48,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:48,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 06:28:48,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:48,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442910441] [2025-03-08 06:28:48,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442910441] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:48,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:48,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:48,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483926111] [2025-03-08 06:28:48,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:48,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:48,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:48,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:48,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:48,893 INFO L87 Difference]: Start difference. First operand 101241 states and 148120 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:28:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:49,703 INFO L93 Difference]: Finished difference Result 231689 states and 340256 transitions. [2025-03-08 06:28:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:28:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-08 06:28:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:49,950 INFO L225 Difference]: With dead ends: 231689 [2025-03-08 06:28:49,950 INFO L226 Difference]: Without dead ends: 212167 [2025-03-08 06:28:50,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 06:28:50,250 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 1724 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:50,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 2588 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:28:50,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212167 states. [2025-03-08 06:28:51,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212167 to 120761. [2025-03-08 06:28:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120761 states, 120760 states have (on average 1.4629347466048361) internal successors, (176664), 120760 states have internal predecessors, (176664), 0 states have call successors, (0), 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 06:28:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120761 states to 120761 states and 176664 transitions. [2025-03-08 06:28:52,067 INFO L78 Accepts]: Start accepts. Automaton has 120761 states and 176664 transitions. Word has length 130 [2025-03-08 06:28:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:52,067 INFO L471 AbstractCegarLoop]: Abstraction has 120761 states and 176664 transitions. [2025-03-08 06:28:52,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:28:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 120761 states and 176664 transitions. [2025-03-08 06:28:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 06:28:52,080 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:52,080 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:52,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 06:28:52,080 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:52,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1970983500, now seen corresponding path program 1 times [2025-03-08 06:28:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086867416] [2025-03-08 06:28:52,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:52,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:52,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 06:28:52,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 06:28:52,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:52,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 06:28:52,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086867416] [2025-03-08 06:28:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086867416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:52,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:52,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069199169] [2025-03-08 06:28:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:52,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:52,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:52,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:52,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:52,231 INFO L87 Difference]: Start difference. First operand 120761 states and 176664 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:53,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:53,068 INFO L93 Difference]: Finished difference Result 251209 states and 368800 transitions. [2025-03-08 06:28:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:28:53,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-08 06:28:53,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:53,371 INFO L225 Difference]: With dead ends: 251209 [2025-03-08 06:28:53,371 INFO L226 Difference]: Without dead ends: 231687 [2025-03-08 06:28:53,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 06:28:53,440 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 1807 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:53,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 2646 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:28:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231687 states. [2025-03-08 06:28:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231687 to 140281. [2025-03-08 06:28:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140281 states, 140280 states have (on average 1.462845737097234) internal successors, (205208), 140280 states have internal predecessors, (205208), 0 states have call successors, (0), 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 06:28:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140281 states to 140281 states and 205208 transitions. [2025-03-08 06:28:55,915 INFO L78 Accepts]: Start accepts. Automaton has 140281 states and 205208 transitions. Word has length 130 [2025-03-08 06:28:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:55,915 INFO L471 AbstractCegarLoop]: Abstraction has 140281 states and 205208 transitions. [2025-03-08 06:28:55,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 06:28:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 140281 states and 205208 transitions. [2025-03-08 06:28:55,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 06:28:55,923 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:55,924 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:55,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 06:28:55,924 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:55,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1763139244, now seen corresponding path program 1 times [2025-03-08 06:28:55,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:55,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189890608] [2025-03-08 06:28:55,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:55,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:55,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 06:28:55,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 06:28:55,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:55,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:28:56,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:56,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189890608] [2025-03-08 06:28:56,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189890608] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:28:56,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:28:56,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 06:28:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143458483] [2025-03-08 06:28:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:28:56,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:28:56,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:28:56,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:28:56,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:28:56,057 INFO L87 Difference]: Start difference. First operand 140281 states and 205208 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:28:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:28:56,712 INFO L93 Difference]: Finished difference Result 270729 states and 397344 transitions. [2025-03-08 06:28:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:28:56,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-03-08 06:28:56,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:28:57,295 INFO L225 Difference]: With dead ends: 270729 [2025-03-08 06:28:57,295 INFO L226 Difference]: Without dead ends: 251207 [2025-03-08 06:28:57,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 06:28:57,352 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 1599 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:28:57,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 2832 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:28:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251207 states. [2025-03-08 06:28:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251207 to 159801. [2025-03-08 06:28:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159801 states, 159800 states have (on average 1.4627784730913642) internal successors, (233752), 159800 states have internal predecessors, (233752), 0 states have call successors, (0), 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 06:28:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159801 states to 159801 states and 233752 transitions. [2025-03-08 06:28:59,825 INFO L78 Accepts]: Start accepts. Automaton has 159801 states and 233752 transitions. Word has length 130 [2025-03-08 06:28:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:28:59,826 INFO L471 AbstractCegarLoop]: Abstraction has 159801 states and 233752 transitions. [2025-03-08 06:28:59,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:28:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 159801 states and 233752 transitions. [2025-03-08 06:28:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-08 06:28:59,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:28:59,838 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:28:59,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 06:28:59,838 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:28:59,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:28:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2012707114, now seen corresponding path program 1 times [2025-03-08 06:28:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:28:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577743473] [2025-03-08 06:28:59,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:59,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:28:59,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-08 06:28:59,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 06:28:59,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:28:59,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:28:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 06:28:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:28:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577743473] [2025-03-08 06:28:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577743473] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:28:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641983767] [2025-03-08 06:28:59,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:28:59,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:28:59,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:28:59,977 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 06:28:59,978 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 06:29:00,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-08 06:29:00,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 06:29:00,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:29:00,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:29:00,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 06:29:00,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:29:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 06:29:00,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 06:29:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 06:29:01,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641983767] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 06:29:01,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 06:29:01,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2025-03-08 06:29:01,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602394550] [2025-03-08 06:29:01,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 06:29:01,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 06:29:01,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:29:01,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 06:29:01,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:29:01,202 INFO L87 Difference]: Start difference. First operand 159801 states and 233752 transitions. Second operand has 9 states, 9 states have (on average 41.77777777777778) internal successors, (376), 9 states have internal predecessors, (376), 0 states have call successors, (0), 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 06:29:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:29:02,772 INFO L93 Difference]: Finished difference Result 584323 states and 859325 transitions. [2025-03-08 06:29:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 06:29:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 41.77777777777778) internal successors, (376), 9 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2025-03-08 06:29:02,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:29:03,308 INFO L225 Difference]: With dead ends: 584323 [2025-03-08 06:29:03,308 INFO L226 Difference]: Without dead ends: 471169 [2025-03-08 06:29:03,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-08 06:29:03,382 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 596 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:29:03,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1088 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:29:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471169 states. [2025-03-08 06:29:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471169 to 471161. [2025-03-08 06:29:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471161 states, 471160 states have (on average 1.4494778843704899) internal successors, (682936), 471160 states have internal predecessors, (682936), 0 states have call successors, (0), 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 06:29:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471161 states to 471161 states and 682936 transitions. [2025-03-08 06:29:10,085 INFO L78 Accepts]: Start accepts. Automaton has 471161 states and 682936 transitions. Word has length 131 [2025-03-08 06:29:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:29:10,085 INFO L471 AbstractCegarLoop]: Abstraction has 471161 states and 682936 transitions. [2025-03-08 06:29:10,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 41.77777777777778) internal successors, (376), 9 states have internal predecessors, (376), 0 states have call successors, (0), 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 06:29:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 471161 states and 682936 transitions. [2025-03-08 06:29:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-08 06:29:10,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:29:10,097 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:29:10,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 06:29:10,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:29:10,298 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:29:10,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:29:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2082881616, now seen corresponding path program 1 times [2025-03-08 06:29:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:29:10,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778900079] [2025-03-08 06:29:10,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:29:10,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:29:10,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 06:29:10,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 06:29:10,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:29:10,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:29:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:29:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:29:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778900079] [2025-03-08 06:29:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778900079] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:29:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139145200] [2025-03-08 06:29:10,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:29:10,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:29:10,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:29:10,583 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 06:29:10,584 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 06:29:10,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 06:29:10,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 06:29:10,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:29:10,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:29:10,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 06:29:10,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:29:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:29:11,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 06:29:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:29:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139145200] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 06:29:12,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 06:29:12,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2025-03-08 06:29:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896955002] [2025-03-08 06:29:12,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 06:29:12,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 06:29:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:29:12,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 06:29:12,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2025-03-08 06:29:12,341 INFO L87 Difference]: Start difference. First operand 471161 states and 682936 transitions. Second operand has 26 states, 26 states have (on average 14.307692307692308) internal successors, (372), 25 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)