./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccd47f3526eef69b5bf2f51fee8d66c64e4c81e1dda46c7d333fbe79bb4350dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:27:43,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:27:43,753 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:27:43,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:27:43,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:27:43,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:27:43,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:27:43,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:27:43,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:27:43,774 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:27:43,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:27:43,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:27:43,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:27:43,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:27:43,774 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:27:43,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:27:43,775 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:27:43,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:27:43,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:27:43,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:27:43,776 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 -> ccd47f3526eef69b5bf2f51fee8d66c64e4c81e1dda46c7d333fbe79bb4350dd [2025-03-16 19:27:44,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:27:44,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:27:44,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:27:44,041 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:27:44,041 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:27:44,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2025-03-16 19:27:45,165 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6574f34/3d23a99114b648c3aac7e5f8205ecece/FLAG51a4dba66 [2025-03-16 19:27:45,420 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:27:45,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2025-03-16 19:27:45,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6574f34/3d23a99114b648c3aac7e5f8205ecece/FLAG51a4dba66 [2025-03-16 19:27:45,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6574f34/3d23a99114b648c3aac7e5f8205ecece [2025-03-16 19:27:45,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:27:45,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:27:45,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:27:45,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:27:45,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:27:45,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:27:45" (1/1) ... [2025-03-16 19:27:45,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3986fdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:45, skipping insertion in model container [2025-03-16 19:27:45,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:27:45" (1/1) ... [2025-03-16 19:27:45,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:27:45,986 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2025-03-16 19:27:46,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:27:46,065 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:27:46,117 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2025-03-16 19:27:46,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:27:46,170 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:27:46,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46 WrapperNode [2025-03-16 19:27:46,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:27:46,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:27:46,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:27:46,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:27:46,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,209 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 881 [2025-03-16 19:27:46,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:27:46,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:27:46,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:27:46,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:27:46,216 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,242 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:27:46,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,253 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:27:46,269 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:27:46,269 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:27:46,269 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:27:46,269 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (1/1) ... [2025-03-16 19:27:46,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:27:46,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:27:46,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:27:46,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:27:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:27:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:27:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:27:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:27:46,432 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:27:46,434 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:27:47,129 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L565: havoc main_~node4____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L499: havoc main_~node3__m3~2#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L765: havoc main_~node2____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1327: havoc main_~node1____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1195: havoc main_~node4____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L238: havoc main_~node3__m3~0#1;havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L967: havoc main_~node5____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L737: havoc main_~node2____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L407: havoc main_~node5__m5~1#1;havoc main_~node4__m4~1#1;havoc main_~node3__m3~1#1;havoc main_~node2__m2~1#1;havoc main_~node1__m1~1#1;havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1;havoc main_~node5____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:47,130 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L939: havoc main_~node5____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L280: havoc main_~node5__m5~0#1;havoc main_~node4____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1239: havoc main_~node3____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L679: havoc main_~node3____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L481: havoc main_~node2__m2~2#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L217: havoc main_~node2__m2~0#1;havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L517: havoc main_~node4__m4~2#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L651: havoc main_~node3____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L852: havoc main_~node1____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L259: havoc main_~node4__m4~0#1;havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1283: havoc main_~node2____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:47,131 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1151: havoc main_~node5____CPAchecker_TMP_1~1#1; [2025-03-16 19:27:47,132 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L196: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2025-03-16 19:27:47,132 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L824: havoc main_~node1____CPAchecker_TMP_0~1#1; [2025-03-16 19:27:47,132 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L593: havoc main_~node4____CPAchecker_TMP_1~0#1; [2025-03-16 19:27:47,132 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L462: havoc main_~node1__m1~2#1;havoc main_~main____CPAchecker_TMP_0~1#1;havoc main_~__tmp_2~0#1, main_~assert__arg~1#1;havoc main_~check__tmp~1#1; [2025-03-16 19:27:47,176 INFO L? ?]: Removed 100 outVars from TransFormulas that were not future-live. [2025-03-16 19:27:47,177 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:27:47,189 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:27:47,190 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:27:47,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:27:47 BoogieIcfgContainer [2025-03-16 19:27:47,190 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:27:47,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:27:47,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:27:47,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:27:47,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:27:45" (1/3) ... [2025-03-16 19:27:47,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a7312c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:27:47, skipping insertion in model container [2025-03-16 19:27:47,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:27:46" (2/3) ... [2025-03-16 19:27:47,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a7312c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:27:47, skipping insertion in model container [2025-03-16 19:27:47,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:27:47" (3/3) ... [2025-03-16 19:27:47,199 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2025-03-16 19:27:47,212 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:27:47,215 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c that has 1 procedures, 215 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-16 19:27:47,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:27:47,270 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;@6899987a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:27:47,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:27:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.7230046948356808) internal successors, (367), 214 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-16 19:27:47,281 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:47,282 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:27:47,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:47,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1504283744, now seen corresponding path program 1 times [2025-03-16 19:27:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:47,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736681951] [2025-03-16 19:27:47,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:47,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-16 19:27:47,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-16 19:27:47,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:47,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:47,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:47,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736681951] [2025-03-16 19:27:47,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736681951] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:47,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:47,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:27:47,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082112301] [2025-03-16 19:27:47,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:47,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:27:47,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:47,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:27:47,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:47,878 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.7230046948356808) internal successors, (367), 214 states have internal predecessors, (367), 0 states have call successors, (0), 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 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:48,110 INFO L93 Difference]: Finished difference Result 867 states and 1403 transitions. [2025-03-16 19:27:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:27:48,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-03-16 19:27:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:48,125 INFO L225 Difference]: With dead ends: 867 [2025-03-16 19:27:48,126 INFO L226 Difference]: Without dead ends: 747 [2025-03-16 19:27:48,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:27:48,131 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 2252 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:48,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 3031 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:27:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2025-03-16 19:27:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 328. [2025-03-16 19:27:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.5015290519877675) internal successors, (491), 327 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 491 transitions. [2025-03-16 19:27:48,188 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 491 transitions. Word has length 80 [2025-03-16 19:27:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:48,188 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 491 transitions. [2025-03-16 19:27:48,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 491 transitions. [2025-03-16 19:27:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-16 19:27:48,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:48,191 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] [2025-03-16 19:27:48,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:27:48,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:48,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash -610883342, now seen corresponding path program 1 times [2025-03-16 19:27:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:48,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151274100] [2025-03-16 19:27:48,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:48,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-16 19:27:48,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-16 19:27:48,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:48,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:48,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151274100] [2025-03-16 19:27:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151274100] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:48,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:27:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489838647] [2025-03-16 19:27:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:48,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:27:48,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:48,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:27:48,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:48,506 INFO L87 Difference]: Start difference. First operand 328 states and 491 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:48,691 INFO L93 Difference]: Finished difference Result 1424 states and 2198 transitions. [2025-03-16 19:27:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:27:48,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2025-03-16 19:27:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:48,696 INFO L225 Difference]: With dead ends: 1424 [2025-03-16 19:27:48,696 INFO L226 Difference]: Without dead ends: 1176 [2025-03-16 19:27:48,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:48,698 INFO L435 NwaCegarLoop]: 621 mSDtfsCounter, 1248 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:48,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1352 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2025-03-16 19:27:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1168. [2025-03-16 19:27:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.5389888603256212) internal successors, (1796), 1167 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1796 transitions. [2025-03-16 19:27:48,748 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1796 transitions. Word has length 81 [2025-03-16 19:27:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:48,749 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1796 transitions. [2025-03-16 19:27:48,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1796 transitions. [2025-03-16 19:27:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:27:48,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:48,756 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] [2025-03-16 19:27:48,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:27:48,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:48,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash -387299492, now seen corresponding path program 1 times [2025-03-16 19:27:48,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:48,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419652007] [2025-03-16 19:27:48,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:48,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:48,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:27:48,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:27:48,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:48,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:48,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:48,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419652007] [2025-03-16 19:27:48,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419652007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:48,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:48,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:48,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171159837] [2025-03-16 19:27:48,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:48,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:48,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:48,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:48,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:48,931 INFO L87 Difference]: Start difference. First operand 1168 states and 1796 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:49,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:49,168 INFO L93 Difference]: Finished difference Result 3172 states and 4934 transitions. [2025-03-16 19:27:49,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:49,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2025-03-16 19:27:49,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:49,177 INFO L225 Difference]: With dead ends: 3172 [2025-03-16 19:27:49,177 INFO L226 Difference]: Without dead ends: 2062 [2025-03-16 19:27:49,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:49,181 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 1197 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:49,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 293 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2025-03-16 19:27:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2060. [2025-03-16 19:27:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 1.547838756677999) internal successors, (3187), 2059 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3187 transitions. [2025-03-16 19:27:49,235 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3187 transitions. Word has length 82 [2025-03-16 19:27:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:49,235 INFO L471 AbstractCegarLoop]: Abstraction has 2060 states and 3187 transitions. [2025-03-16 19:27:49,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3187 transitions. [2025-03-16 19:27:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:27:49,238 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:49,238 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] [2025-03-16 19:27:49,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:27:49,238 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:49,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash 676417540, now seen corresponding path program 1 times [2025-03-16 19:27:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:49,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732147246] [2025-03-16 19:27:49,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:49,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:27:49,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:27:49,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:49,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:49,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:49,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732147246] [2025-03-16 19:27:49,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732147246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:49,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:49,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991937505] [2025-03-16 19:27:49,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:49,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:49,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:49,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:49,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:49,410 INFO L87 Difference]: Start difference. First operand 2060 states and 3187 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:49,631 INFO L93 Difference]: Finished difference Result 5625 states and 8763 transitions. [2025-03-16 19:27:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:49,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2025-03-16 19:27:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:49,644 INFO L225 Difference]: With dead ends: 5625 [2025-03-16 19:27:49,644 INFO L226 Difference]: Without dead ends: 3676 [2025-03-16 19:27:49,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:49,648 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 1127 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:49,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 297 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:49,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2025-03-16 19:27:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3674. [2025-03-16 19:27:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 1.5485978763953172) internal successors, (5688), 3673 states have internal predecessors, (5688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 5688 transitions. [2025-03-16 19:27:49,722 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 5688 transitions. Word has length 82 [2025-03-16 19:27:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:49,722 INFO L471 AbstractCegarLoop]: Abstraction has 3674 states and 5688 transitions. [2025-03-16 19:27:49,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:49,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 5688 transitions. [2025-03-16 19:27:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:27:49,726 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:49,726 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] [2025-03-16 19:27:49,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:27:49,726 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:49,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1766522024, now seen corresponding path program 1 times [2025-03-16 19:27:49,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:49,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631661839] [2025-03-16 19:27:49,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:49,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:49,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:27:49,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:27:49,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:49,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:49,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:49,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631661839] [2025-03-16 19:27:49,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631661839] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:49,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:49,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:49,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422504851] [2025-03-16 19:27:49,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:49,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:49,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:49,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:49,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:49,870 INFO L87 Difference]: Start difference. First operand 3674 states and 5688 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:50,146 INFO L93 Difference]: Finished difference Result 10405 states and 16201 transitions. [2025-03-16 19:27:50,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:50,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2025-03-16 19:27:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:50,169 INFO L225 Difference]: With dead ends: 10405 [2025-03-16 19:27:50,169 INFO L226 Difference]: Without dead ends: 6876 [2025-03-16 19:27:50,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:50,177 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 1113 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:50,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 306 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2025-03-16 19:27:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 6874. [2025-03-16 19:27:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6874 states, 6873 states have (on average 1.5496871817255928) internal successors, (10651), 6873 states have internal predecessors, (10651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6874 states to 6874 states and 10651 transitions. [2025-03-16 19:27:50,305 INFO L78 Accepts]: Start accepts. Automaton has 6874 states and 10651 transitions. Word has length 82 [2025-03-16 19:27:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:50,306 INFO L471 AbstractCegarLoop]: Abstraction has 6874 states and 10651 transitions. [2025-03-16 19:27:50,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 6874 states and 10651 transitions. [2025-03-16 19:27:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:27:50,308 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:50,308 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] [2025-03-16 19:27:50,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:27:50,311 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:50,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1000380752, now seen corresponding path program 1 times [2025-03-16 19:27:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020515366] [2025-03-16 19:27:50,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:50,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:50,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:27:50,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:27:50,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:50,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020515366] [2025-03-16 19:27:50,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020515366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:50,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:50,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:50,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855785294] [2025-03-16 19:27:50,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:50,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:50,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:50,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:50,415 INFO L87 Difference]: Start difference. First operand 6874 states and 10651 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:50,641 INFO L93 Difference]: Finished difference Result 20165 states and 31320 transitions. [2025-03-16 19:27:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:50,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2025-03-16 19:27:50,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:50,680 INFO L225 Difference]: With dead ends: 20165 [2025-03-16 19:27:50,680 INFO L226 Difference]: Without dead ends: 13372 [2025-03-16 19:27:50,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:50,694 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 1147 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:50,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 295 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13372 states. [2025-03-16 19:27:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13372 to 13370. [2025-03-16 19:27:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13370 states, 13369 states have (on average 1.5446929463684644) internal successors, (20651), 13369 states have internal predecessors, (20651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13370 states to 13370 states and 20651 transitions. [2025-03-16 19:27:50,925 INFO L78 Accepts]: Start accepts. Automaton has 13370 states and 20651 transitions. Word has length 82 [2025-03-16 19:27:50,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:50,926 INFO L471 AbstractCegarLoop]: Abstraction has 13370 states and 20651 transitions. [2025-03-16 19:27:50,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 13370 states and 20651 transitions. [2025-03-16 19:27:50,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 19:27:50,929 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:50,929 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] [2025-03-16 19:27:50,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:27:50,929 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:50,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:50,930 INFO L85 PathProgramCache]: Analyzing trace with hash 377287176, now seen corresponding path program 1 times [2025-03-16 19:27:50,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:50,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454060501] [2025-03-16 19:27:50,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:50,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:50,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 19:27:50,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 19:27:50,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:50,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454060501] [2025-03-16 19:27:51,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454060501] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:51,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:51,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:51,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008371033] [2025-03-16 19:27:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:51,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:51,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:51,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:51,010 INFO L87 Difference]: Start difference. First operand 13370 states and 20651 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:51,267 INFO L93 Difference]: Finished difference Result 39777 states and 61516 transitions. [2025-03-16 19:27:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:51,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2025-03-16 19:27:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:51,314 INFO L225 Difference]: With dead ends: 39777 [2025-03-16 19:27:51,315 INFO L226 Difference]: Without dead ends: 26449 [2025-03-16 19:27:51,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:51,337 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 1203 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:51,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 291 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:27:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26449 states. [2025-03-16 19:27:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26449 to 26447. [2025-03-16 19:27:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26447 states, 26446 states have (on average 1.5359600695757392) internal successors, (40620), 26446 states have internal predecessors, (40620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26447 states to 26447 states and 40620 transitions. [2025-03-16 19:27:51,769 INFO L78 Accepts]: Start accepts. Automaton has 26447 states and 40620 transitions. Word has length 82 [2025-03-16 19:27:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:51,770 INFO L471 AbstractCegarLoop]: Abstraction has 26447 states and 40620 transitions. [2025-03-16 19:27:51,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 26447 states and 40620 transitions. [2025-03-16 19:27:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-16 19:27:51,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:51,776 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] [2025-03-16 19:27:51,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:27:51,776 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:51,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1214902796, now seen corresponding path program 1 times [2025-03-16 19:27:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:51,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551625959] [2025-03-16 19:27:51,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:51,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-16 19:27:51,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-16 19:27:51,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:51,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:52,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551625959] [2025-03-16 19:27:52,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551625959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:52,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:52,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:27:52,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635359953] [2025-03-16 19:27:52,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:52,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:27:52,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:52,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:27:52,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:52,068 INFO L87 Difference]: Start difference. First operand 26447 states and 40620 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:52,155 INFO L93 Difference]: Finished difference Result 27089 states and 41581 transitions. [2025-03-16 19:27:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:27:52,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2025-03-16 19:27:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:52,200 INFO L225 Difference]: With dead ends: 27089 [2025-03-16 19:27:52,201 INFO L226 Difference]: Without dead ends: 27087 [2025-03-16 19:27:52,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:27:52,212 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 0 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:52,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1158 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27087 states. [2025-03-16 19:27:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27087 to 27087. [2025-03-16 19:27:52,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27087 states, 27086 states have (on average 1.5232961677619434) internal successors, (41260), 27086 states have internal predecessors, (41260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27087 states to 27087 states and 41260 transitions. [2025-03-16 19:27:52,571 INFO L78 Accepts]: Start accepts. Automaton has 27087 states and 41260 transitions. Word has length 83 [2025-03-16 19:27:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:52,571 INFO L471 AbstractCegarLoop]: Abstraction has 27087 states and 41260 transitions. [2025-03-16 19:27:52,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:52,571 INFO L276 IsEmpty]: Start isEmpty. Operand 27087 states and 41260 transitions. [2025-03-16 19:27:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-16 19:27:52,577 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:52,577 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] [2025-03-16 19:27:52,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:27:52,577 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:52,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash 997493086, now seen corresponding path program 1 times [2025-03-16 19:27:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:52,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750563606] [2025-03-16 19:27:52,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:52,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:52,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-16 19:27:52,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-16 19:27:52,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:52,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:52,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750563606] [2025-03-16 19:27:52,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750563606] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:52,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:52,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:27:52,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746011568] [2025-03-16 19:27:52,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:52,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:27:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:52,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:27:52,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:27:52,734 INFO L87 Difference]: Start difference. First operand 27087 states and 41260 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:52,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:52,880 INFO L93 Difference]: Finished difference Result 76307 states and 115934 transitions. [2025-03-16 19:27:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:27:52,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2025-03-16 19:27:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:52,953 INFO L225 Difference]: With dead ends: 76307 [2025-03-16 19:27:52,953 INFO L226 Difference]: Without dead ends: 50065 [2025-03-16 19:27:52,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:27:52,984 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 204 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:52,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 819 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50065 states. [2025-03-16 19:27:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50065 to 50063. [2025-03-16 19:27:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50063 states, 50062 states have (on average 1.5100475410490992) internal successors, (75596), 50062 states have internal predecessors, (75596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50063 states to 50063 states and 75596 transitions. [2025-03-16 19:27:53,588 INFO L78 Accepts]: Start accepts. Automaton has 50063 states and 75596 transitions. Word has length 84 [2025-03-16 19:27:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:53,589 INFO L471 AbstractCegarLoop]: Abstraction has 50063 states and 75596 transitions. [2025-03-16 19:27:53,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 50063 states and 75596 transitions. [2025-03-16 19:27:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:27:53,594 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:53,594 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] [2025-03-16 19:27:53,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:27:53,595 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:53,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1360346628, now seen corresponding path program 1 times [2025-03-16 19:27:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:53,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772251402] [2025-03-16 19:27:53,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:53,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:27:53,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:27:53,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:53,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:53,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:53,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772251402] [2025-03-16 19:27:53,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772251402] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:53,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:53,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:27:53,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752405442] [2025-03-16 19:27:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:53,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:27:53,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:53,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:27:53,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:27:53,651 INFO L87 Difference]: Start difference. First operand 50063 states and 75596 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:54,256 INFO L93 Difference]: Finished difference Result 129516 states and 195815 transitions. [2025-03-16 19:27:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:27:54,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2025-03-16 19:27:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:54,410 INFO L225 Difference]: With dead ends: 129516 [2025-03-16 19:27:54,410 INFO L226 Difference]: Without dead ends: 87241 [2025-03-16 19:27:54,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:27:54,461 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 212 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:54,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 566 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:27:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87241 states. [2025-03-16 19:27:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87241 to 87111. [2025-03-16 19:27:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87111 states, 87110 states have (on average 1.5034324417403284) internal successors, (130964), 87110 states have internal predecessors, (130964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87111 states to 87111 states and 130964 transitions. [2025-03-16 19:27:55,497 INFO L78 Accepts]: Start accepts. Automaton has 87111 states and 130964 transitions. Word has length 85 [2025-03-16 19:27:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:55,497 INFO L471 AbstractCegarLoop]: Abstraction has 87111 states and 130964 transitions. [2025-03-16 19:27:55,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand 87111 states and 130964 transitions. [2025-03-16 19:27:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:27:55,506 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:55,506 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] [2025-03-16 19:27:55,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:27:55,506 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:55,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash -126508965, now seen corresponding path program 1 times [2025-03-16 19:27:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035878303] [2025-03-16 19:27:55,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:55,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:27:55,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:27:55,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:55,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:55,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:55,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035878303] [2025-03-16 19:27:55,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035878303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:55,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:55,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:27:55,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820235293] [2025-03-16 19:27:55,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:55,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:27:55,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:55,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:27:55,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:27:55,859 INFO L87 Difference]: Start difference. First operand 87111 states and 130964 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:56,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:56,517 INFO L93 Difference]: Finished difference Result 218876 states and 330361 transitions. [2025-03-16 19:27:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:27:56,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2025-03-16 19:27:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:27:56,930 INFO L225 Difference]: With dead ends: 218876 [2025-03-16 19:27:56,931 INFO L226 Difference]: Without dead ends: 179514 [2025-03-16 19:27:56,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:27:56,990 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 1666 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:27:56,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 1976 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:27:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179514 states. [2025-03-16 19:27:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179514 to 124002. [2025-03-16 19:27:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124002 states, 124001 states have (on average 1.502576592124257) internal successors, (186321), 124001 states have internal predecessors, (186321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124002 states to 124002 states and 186321 transitions. [2025-03-16 19:27:58,786 INFO L78 Accepts]: Start accepts. Automaton has 124002 states and 186321 transitions. Word has length 85 [2025-03-16 19:27:58,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:27:58,786 INFO L471 AbstractCegarLoop]: Abstraction has 124002 states and 186321 transitions. [2025-03-16 19:27:58,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 124002 states and 186321 transitions. [2025-03-16 19:27:58,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:27:58,795 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:27:58,795 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] [2025-03-16 19:27:58,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:27:58,796 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:27:58,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:27:58,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1357679012, now seen corresponding path program 1 times [2025-03-16 19:27:58,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:27:58,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951318425] [2025-03-16 19:27:58,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:27:58,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:27:58,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:27:58,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:27:58,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:27:58,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:27:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:27:58,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:27:58,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951318425] [2025-03-16 19:27:58,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951318425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:27:58,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:27:58,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:27:58,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257012376] [2025-03-16 19:27:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:27:58,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:27:58,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:27:58,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:27:58,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:27:58,843 INFO L87 Difference]: Start difference. First operand 124002 states and 186321 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:27:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:27:59,910 INFO L93 Difference]: Finished difference Result 250608 states and 376091 transitions. [2025-03-16 19:27:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:27:59,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2025-03-16 19:27:59,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:00,131 INFO L225 Difference]: With dead ends: 250608 [2025-03-16 19:28:00,131 INFO L226 Difference]: Without dead ends: 158854 [2025-03-16 19:28:00,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:00,190 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 192 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:00,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 564 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:28:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158854 states. [2025-03-16 19:28:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158854 to 157527. [2025-03-16 19:28:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157527 states, 157526 states have (on average 1.4824727346596753) internal successors, (233528), 157526 states have internal predecessors, (233528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157527 states to 157527 states and 233528 transitions. [2025-03-16 19:28:02,428 INFO L78 Accepts]: Start accepts. Automaton has 157527 states and 233528 transitions. Word has length 85 [2025-03-16 19:28:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:02,428 INFO L471 AbstractCegarLoop]: Abstraction has 157527 states and 233528 transitions. [2025-03-16 19:28:02,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 157527 states and 233528 transitions. [2025-03-16 19:28:02,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:28:02,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:02,437 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] [2025-03-16 19:28:02,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:28:02,437 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:02,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1203746821, now seen corresponding path program 1 times [2025-03-16 19:28:02,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:02,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677117101] [2025-03-16 19:28:02,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:02,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:02,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:28:02,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:28:02,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:02,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:02,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:02,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677117101] [2025-03-16 19:28:02,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677117101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:02,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:02,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:28:02,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193124336] [2025-03-16 19:28:02,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:02,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:28:02,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:02,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:28:02,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:02,485 INFO L87 Difference]: Start difference. First operand 157527 states and 233528 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:03,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:03,356 INFO L93 Difference]: Finished difference Result 268262 states and 396473 transitions. [2025-03-16 19:28:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:28:03,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2025-03-16 19:28:03,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:03,609 INFO L225 Difference]: With dead ends: 268262 [2025-03-16 19:28:03,609 INFO L226 Difference]: Without dead ends: 180156 [2025-03-16 19:28:03,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:03,653 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 180 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:03,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 562 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:28:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180156 states. [2025-03-16 19:28:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180156 to 178580. [2025-03-16 19:28:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178580 states, 178579 states have (on average 1.4576629950890083) internal successors, (260308), 178579 states have internal predecessors, (260308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178580 states to 178580 states and 260308 transitions. [2025-03-16 19:28:06,104 INFO L78 Accepts]: Start accepts. Automaton has 178580 states and 260308 transitions. Word has length 85 [2025-03-16 19:28:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:06,105 INFO L471 AbstractCegarLoop]: Abstraction has 178580 states and 260308 transitions. [2025-03-16 19:28:06,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 178580 states and 260308 transitions. [2025-03-16 19:28:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:28:06,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:06,115 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] [2025-03-16 19:28:06,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:28:06,115 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:06,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1805773035, now seen corresponding path program 1 times [2025-03-16 19:28:06,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:06,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784718736] [2025-03-16 19:28:06,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:06,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:06,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:28:06,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:28:06,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:06,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:06,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:06,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784718736] [2025-03-16 19:28:06,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784718736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:06,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:06,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:28:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832832123] [2025-03-16 19:28:06,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:06,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:28:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:06,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:28:06,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:06,202 INFO L87 Difference]: Start difference. First operand 178580 states and 260308 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:07,200 INFO L93 Difference]: Finished difference Result 248120 states and 360146 transitions. [2025-03-16 19:28:07,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:28:07,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2025-03-16 19:28:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:07,490 INFO L225 Difference]: With dead ends: 248120 [2025-03-16 19:28:07,491 INFO L226 Difference]: Without dead ends: 183714 [2025-03-16 19:28:07,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:28:07,531 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 172 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:07,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 563 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:28:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183714 states. [2025-03-16 19:28:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183714 to 164524. [2025-03-16 19:28:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164524 states, 164523 states have (on average 1.4352765266862384) internal successors, (236136), 164523 states have internal predecessors, (236136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164524 states to 164524 states and 236136 transitions. [2025-03-16 19:28:09,672 INFO L78 Accepts]: Start accepts. Automaton has 164524 states and 236136 transitions. Word has length 85 [2025-03-16 19:28:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:09,673 INFO L471 AbstractCegarLoop]: Abstraction has 164524 states and 236136 transitions. [2025-03-16 19:28:09,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 164524 states and 236136 transitions. [2025-03-16 19:28:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:28:09,683 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:09,684 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] [2025-03-16 19:28:09,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:28:09,684 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:09,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1121157381, now seen corresponding path program 1 times [2025-03-16 19:28:09,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:09,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147239362] [2025-03-16 19:28:09,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:09,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:28:09,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:28:09,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:09,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:09,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:09,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147239362] [2025-03-16 19:28:09,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147239362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:09,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:09,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:28:09,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827833171] [2025-03-16 19:28:09,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:09,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:28:09,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:09,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:28:09,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:28:09,782 INFO L87 Difference]: Start difference. First operand 164524 states and 236136 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:10,888 INFO L93 Difference]: Finished difference Result 287306 states and 414492 transitions. [2025-03-16 19:28:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:28:10,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2025-03-16 19:28:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:11,286 INFO L225 Difference]: With dead ends: 287306 [2025-03-16 19:28:11,286 INFO L226 Difference]: Without dead ends: 263442 [2025-03-16 19:28:11,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:28:11,369 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 1947 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:11,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 1725 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:28:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263442 states. [2025-03-16 19:28:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263442 to 188086. [2025-03-16 19:28:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188086 states, 188085 states have (on average 1.4353829385650105) internal successors, (269974), 188085 states have internal predecessors, (269974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188086 states to 188086 states and 269974 transitions. [2025-03-16 19:28:14,523 INFO L78 Accepts]: Start accepts. Automaton has 188086 states and 269974 transitions. Word has length 85 [2025-03-16 19:28:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:14,523 INFO L471 AbstractCegarLoop]: Abstraction has 188086 states and 269974 transitions. [2025-03-16 19:28:14,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 188086 states and 269974 transitions. [2025-03-16 19:28:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:28:14,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:14,534 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] [2025-03-16 19:28:14,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 19:28:14,534 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:14,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash 436144533, now seen corresponding path program 1 times [2025-03-16 19:28:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:14,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509771548] [2025-03-16 19:28:14,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:14,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:14,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:28:14,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:28:14,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:14,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:14,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509771548] [2025-03-16 19:28:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509771548] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:14,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:28:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424294035] [2025-03-16 19:28:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:14,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:28:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:14,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:28:14,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:28:14,642 INFO L87 Difference]: Start difference. First operand 188086 states and 269974 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:15,738 INFO L93 Difference]: Finished difference Result 284576 states and 410198 transitions. [2025-03-16 19:28:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:28:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2025-03-16 19:28:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:16,162 INFO L225 Difference]: With dead ends: 284576 [2025-03-16 19:28:16,162 INFO L226 Difference]: Without dead ends: 273936 [2025-03-16 19:28:16,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:28:16,233 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 1792 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:16,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 1778 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:28:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273936 states. [2025-03-16 19:28:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273936 to 198580. [2025-03-16 19:28:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198580 states, 198579 states have (on average 1.435519365088957) internal successors, (285064), 198579 states have internal predecessors, (285064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:19,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198580 states to 198580 states and 285064 transitions. [2025-03-16 19:28:19,543 INFO L78 Accepts]: Start accepts. Automaton has 198580 states and 285064 transitions. Word has length 85 [2025-03-16 19:28:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:19,543 INFO L471 AbstractCegarLoop]: Abstraction has 198580 states and 285064 transitions. [2025-03-16 19:28:19,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 198580 states and 285064 transitions. [2025-03-16 19:28:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:28:19,554 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:19,554 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] [2025-03-16 19:28:19,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 19:28:19,554 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:19,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:19,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082908, now seen corresponding path program 1 times [2025-03-16 19:28:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932603446] [2025-03-16 19:28:19,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:19,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:28:19,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:28:19,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:19,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:19,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932603446] [2025-03-16 19:28:19,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932603446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:19,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:19,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:28:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648829988] [2025-03-16 19:28:19,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:19,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:28:19,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:19,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:28:19,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:28:19,659 INFO L87 Difference]: Start difference. First operand 198580 states and 285064 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:20,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:28:20,965 INFO L93 Difference]: Finished difference Result 333990 states and 481792 transitions. [2025-03-16 19:28:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 19:28:20,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2025-03-16 19:28:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:28:21,387 INFO L225 Difference]: With dead ends: 333990 [2025-03-16 19:28:21,387 INFO L226 Difference]: Without dead ends: 297286 [2025-03-16 19:28:21,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:28:21,458 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 1642 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:28:21,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 2198 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:28:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297286 states. [2025-03-16 19:28:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297286 to 226271. [2025-03-16 19:28:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226271 states, 226270 states have (on average 1.436695098775799) internal successors, (325081), 226270 states have internal predecessors, (325081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226271 states to 226271 states and 325081 transitions. [2025-03-16 19:28:25,130 INFO L78 Accepts]: Start accepts. Automaton has 226271 states and 325081 transitions. Word has length 85 [2025-03-16 19:28:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:28:25,130 INFO L471 AbstractCegarLoop]: Abstraction has 226271 states and 325081 transitions. [2025-03-16 19:28:25,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:28:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 226271 states and 325081 transitions. [2025-03-16 19:28:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 19:28:25,140 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:28:25,140 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] [2025-03-16 19:28:25,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 19:28:25,141 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:28:25,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:28:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1527560580, now seen corresponding path program 1 times [2025-03-16 19:28:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:28:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031102132] [2025-03-16 19:28:25,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:28:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:28:25,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 19:28:25,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 19:28:25,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:28:25,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:28:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:28:25,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:28:25,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031102132] [2025-03-16 19:28:25,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031102132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:28:25,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:28:25,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 19:28:25,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299528251] [2025-03-16 19:28:25,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:28:25,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 19:28:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:28:25,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 19:28:25,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:28:25,230 INFO L87 Difference]: Start difference. First operand 226271 states and 325081 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)