./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:23:43,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:23:43,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:23:43,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:23:43,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:23:43,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:23:43,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:23:43,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:23:43,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:23:43,429 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:23:43,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:23:43,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:23:43,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:23:43,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:23:43,431 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:23:43,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:23:43,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:23:43,431 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:23:43,431 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:23:43,431 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:23:43,431 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:23:43,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:23:43,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:23:43,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:23:43,432 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:23:43,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:23:43,432 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:23:43,432 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:23:43,432 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:23:43,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:23:43,432 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:23:43,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:23:43,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:23:43,433 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 -> 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 [2025-03-16 19:23:43,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:23:43,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:23:43,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:23:43,659 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:23:43,659 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:23:43,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-16 19:23:44,757 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae80f1bf/8311f577c435424d8269cc7fadefa96c/FLAG762252128 [2025-03-16 19:23:45,022 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:23:45,025 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-16 19:23:45,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae80f1bf/8311f577c435424d8269cc7fadefa96c/FLAG762252128 [2025-03-16 19:23:45,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae80f1bf/8311f577c435424d8269cc7fadefa96c [2025-03-16 19:23:45,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:23:45,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:23:45,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:23:45,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:23:45,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:23:45,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e42eceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45, skipping insertion in model container [2025-03-16 19:23:45,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,358 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:23:45,512 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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2025-03-16 19:23:45,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:23:45,549 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:23:45,583 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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2025-03-16 19:23:45,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:23:45,610 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:23:45,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45 WrapperNode [2025-03-16 19:23:45,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:23:45,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:23:45,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:23:45,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:23:45,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,640 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 362 [2025-03-16 19:23:45,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:23:45,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:23:45,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:23:45,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:23:45,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,660 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 19:23:45,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,665 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:23:45,670 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:23:45,672 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:23:45,672 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:23:45,672 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (1/1) ... [2025-03-16 19:23:45,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:23:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:23:45,697 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 19:23:45,702 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 19:23:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:23:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:23:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:23:45,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:23:45,789 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:23:45,792 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:23:46,112 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L449: havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L385: havoc main_~node2____CPAchecker_TMP_1~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L154: havoc main_~node2__m2~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L477: havoc main_~node1____CPAchecker_TMP_1~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L271: havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L172: havoc main_~node3__m3~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L207: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L299: havoc main_~node3____CPAchecker_TMP_1~0#1; [2025-03-16 19:23:46,113 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L357: havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-16 19:23:46,133 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2025-03-16 19:23:46,133 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:23:46,142 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:23:46,143 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:23:46,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:23:46 BoogieIcfgContainer [2025-03-16 19:23:46,144 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:23:46,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:23:46,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:23:46,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:23:46,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:23:45" (1/3) ... [2025-03-16 19:23:46,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c1ac8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:23:46, skipping insertion in model container [2025-03-16 19:23:46,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:23:45" (2/3) ... [2025-03-16 19:23:46,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c1ac8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:23:46, skipping insertion in model container [2025-03-16 19:23:46,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:23:46" (3/3) ... [2025-03-16 19:23:46,156 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-16 19:23:46,167 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:23:46,169 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 86 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-16 19:23:46,217 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:23:46,225 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;@70215589, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:23:46,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:23:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 84 states have (on average 1.6785714285714286) internal successors, (141), 85 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 19:23:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-16 19:23:46,236 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:46,237 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] [2025-03-16 19:23:46,237 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:46,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:46,242 INFO L85 PathProgramCache]: Analyzing trace with hash -721559982, now seen corresponding path program 1 times [2025-03-16 19:23:46,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:46,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057101998] [2025-03-16 19:23:46,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:46,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-16 19:23:46,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-16 19:23:46,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:46,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:46,511 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 19:23:46,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057101998] [2025-03-16 19:23:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057101998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:46,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:46,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:23:46,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311802368] [2025-03-16 19:23:46,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:46,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:23:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:46,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:23:46,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:23:46,531 INFO L87 Difference]: Start difference. First operand has 86 states, 84 states have (on average 1.6785714285714286) internal successors, (141), 85 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 19:23:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:46,572 INFO L93 Difference]: Finished difference Result 204 states and 323 transitions. [2025-03-16 19:23:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:23:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2025-03-16 19:23:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:46,582 INFO L225 Difference]: With dead ends: 204 [2025-03-16 19:23:46,582 INFO L226 Difference]: Without dead ends: 131 [2025-03-16 19:23:46,585 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 19:23:46,587 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 94 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:46,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 282 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-03-16 19:23:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2025-03-16 19:23:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.5078125) internal successors, (193), 128 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 19:23:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 193 transitions. [2025-03-16 19:23:46,632 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 193 transitions. Word has length 37 [2025-03-16 19:23:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:46,632 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 193 transitions. [2025-03-16 19:23:46,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 19:23:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 193 transitions. [2025-03-16 19:23:46,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-16 19:23:46,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:46,633 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] [2025-03-16 19:23:46,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:23:46,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:46,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:46,634 INFO L85 PathProgramCache]: Analyzing trace with hash 824834605, now seen corresponding path program 1 times [2025-03-16 19:23:46,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:46,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673138017] [2025-03-16 19:23:46,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:46,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:46,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-16 19:23:46,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-16 19:23:46,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:46,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:46,759 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 19:23:46,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:46,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673138017] [2025-03-16 19:23:46,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673138017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:46,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:46,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:23:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591790823] [2025-03-16 19:23:46,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:46,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:23:46,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:46,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:23:46,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:23:46,764 INFO L87 Difference]: Start difference. First operand 129 states and 193 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 19:23:46,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:46,794 INFO L93 Difference]: Finished difference Result 317 states and 489 transitions. [2025-03-16 19:23:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:23:46,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2025-03-16 19:23:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:46,796 INFO L225 Difference]: With dead ends: 317 [2025-03-16 19:23:46,798 INFO L226 Difference]: Without dead ends: 207 [2025-03-16 19:23:46,799 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 19:23:46,800 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 79 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:46,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 234 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-03-16 19:23:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2025-03-16 19:23:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5294117647058822) internal successors, (312), 204 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 19:23:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 312 transitions. [2025-03-16 19:23:46,815 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 312 transitions. Word has length 38 [2025-03-16 19:23:46,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:46,816 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 312 transitions. [2025-03-16 19:23:46,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 19:23:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 312 transitions. [2025-03-16 19:23:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-16 19:23:46,817 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:46,817 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] [2025-03-16 19:23:46,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:23:46,817 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:46,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2090214516, now seen corresponding path program 1 times [2025-03-16 19:23:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:46,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578842070] [2025-03-16 19:23:46,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:46,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:46,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-16 19:23:46,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-16 19:23:46,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:46,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:46,976 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 19:23:46,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:46,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578842070] [2025-03-16 19:23:46,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578842070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:46,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:46,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:23:46,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763735883] [2025-03-16 19:23:46,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:46,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:23:46,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:46,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:23:46,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:23:46,980 INFO L87 Difference]: Start difference. First operand 205 states and 312 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 19:23:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:47,076 INFO L93 Difference]: Finished difference Result 949 states and 1484 transitions. [2025-03-16 19:23:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:23:47,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2025-03-16 19:23:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:47,081 INFO L225 Difference]: With dead ends: 949 [2025-03-16 19:23:47,081 INFO L226 Difference]: Without dead ends: 763 [2025-03-16 19:23:47,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 19:23:47,085 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 501 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:47,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 696 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:23:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-03-16 19:23:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 389. [2025-03-16 19:23:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.5360824742268042) internal successors, (596), 388 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 19:23:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 596 transitions. [2025-03-16 19:23:47,113 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 596 transitions. Word has length 39 [2025-03-16 19:23:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:47,114 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 596 transitions. [2025-03-16 19:23:47,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 19:23:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 596 transitions. [2025-03-16 19:23:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-16 19:23:47,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:47,115 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] [2025-03-16 19:23:47,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:23:47,115 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:47,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -371185251, now seen corresponding path program 1 times [2025-03-16 19:23:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47282901] [2025-03-16 19:23:47,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:47,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-16 19:23:47,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-16 19:23:47,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:47,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:47,249 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 19:23:47,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:47,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47282901] [2025-03-16 19:23:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47282901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:47,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:47,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:23:47,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013887822] [2025-03-16 19:23:47,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:47,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:23:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:47,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:23:47,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:23:47,251 INFO L87 Difference]: Start difference. First operand 389 states and 596 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 19:23:47,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:47,305 INFO L93 Difference]: Finished difference Result 1347 states and 2079 transitions. [2025-03-16 19:23:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:23:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2025-03-16 19:23:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:47,311 INFO L225 Difference]: With dead ends: 1347 [2025-03-16 19:23:47,311 INFO L226 Difference]: Without dead ends: 977 [2025-03-16 19:23:47,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:23:47,315 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 253 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:47,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 405 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2025-03-16 19:23:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 973. [2025-03-16 19:23:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.5349794238683128) internal successors, (1492), 972 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states 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 19:23:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1492 transitions. [2025-03-16 19:23:47,344 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1492 transitions. Word has length 40 [2025-03-16 19:23:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:47,344 INFO L471 AbstractCegarLoop]: Abstraction has 973 states and 1492 transitions. [2025-03-16 19:23:47,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 19:23:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1492 transitions. [2025-03-16 19:23:47,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-16 19:23:47,345 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:47,345 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] [2025-03-16 19:23:47,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:23:47,345 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:47,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:47,346 INFO L85 PathProgramCache]: Analyzing trace with hash 321749784, now seen corresponding path program 1 times [2025-03-16 19:23:47,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:47,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061487854] [2025-03-16 19:23:47,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:47,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:47,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-16 19:23:47,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-16 19:23:47,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:47,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:47,403 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 19:23:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061487854] [2025-03-16 19:23:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061487854] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:47,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:47,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:23:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011597085] [2025-03-16 19:23:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:47,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:23:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:47,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:23:47,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:23:47,405 INFO L87 Difference]: Start difference. First operand 973 states and 1492 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 19:23:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:47,430 INFO L93 Difference]: Finished difference Result 2489 states and 3806 transitions. [2025-03-16 19:23:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:23:47,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2025-03-16 19:23:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:47,437 INFO L225 Difference]: With dead ends: 2489 [2025-03-16 19:23:47,438 INFO L226 Difference]: Without dead ends: 1535 [2025-03-16 19:23:47,439 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 19:23:47,440 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 86 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:47,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 274 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2025-03-16 19:23:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1533. [2025-03-16 19:23:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 1.5065274151436032) internal successors, (2308), 1532 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states 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 19:23:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2308 transitions. [2025-03-16 19:23:47,493 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2308 transitions. Word has length 41 [2025-03-16 19:23:47,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:47,493 INFO L471 AbstractCegarLoop]: Abstraction has 1533 states and 2308 transitions. [2025-03-16 19:23:47,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 19:23:47,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2308 transitions. [2025-03-16 19:23:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-16 19:23:47,495 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:47,495 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] [2025-03-16 19:23:47,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:23:47,495 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:47,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:47,496 INFO L85 PathProgramCache]: Analyzing trace with hash -223219265, now seen corresponding path program 1 times [2025-03-16 19:23:47,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:47,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218774696] [2025-03-16 19:23:47,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:47,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:47,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-16 19:23:47,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-16 19:23:47,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:47,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:47,713 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 19:23:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218774696] [2025-03-16 19:23:47,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218774696] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:47,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:23:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352661007] [2025-03-16 19:23:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:47,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:23:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:47,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:23:47,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:23:47,714 INFO L87 Difference]: Start difference. First operand 1533 states and 2308 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 19:23:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:47,742 INFO L93 Difference]: Finished difference Result 1631 states and 2453 transitions. [2025-03-16 19:23:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:23:47,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2025-03-16 19:23:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:47,748 INFO L225 Difference]: With dead ends: 1631 [2025-03-16 19:23:47,748 INFO L226 Difference]: Without dead ends: 1629 [2025-03-16 19:23:47,749 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 19:23:47,751 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:47,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 458 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2025-03-16 19:23:47,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2025-03-16 19:23:47,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1628 states have (on average 1.4766584766584767) internal successors, (2404), 1628 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states 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 19:23:47,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2404 transitions. [2025-03-16 19:23:47,782 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2404 transitions. Word has length 42 [2025-03-16 19:23:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:47,783 INFO L471 AbstractCegarLoop]: Abstraction has 1629 states and 2404 transitions. [2025-03-16 19:23:47,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 19:23:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2404 transitions. [2025-03-16 19:23:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-16 19:23:47,785 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:47,785 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] [2025-03-16 19:23:47,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:23:47,786 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:47,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1674905930, now seen corresponding path program 1 times [2025-03-16 19:23:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981080209] [2025-03-16 19:23:47,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:47,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-16 19:23:47,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-16 19:23:47,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:47,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:47,857 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 19:23:47,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:47,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981080209] [2025-03-16 19:23:47,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981080209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:47,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:47,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:23:47,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511540762] [2025-03-16 19:23:47,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:47,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:23:47,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:47,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:23:47,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:23:47,860 INFO L87 Difference]: Start difference. First operand 1629 states and 2404 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:23:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:47,889 INFO L93 Difference]: Finished difference Result 3951 states and 5840 transitions. [2025-03-16 19:23:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:23:47,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2025-03-16 19:23:47,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:47,896 INFO L225 Difference]: With dead ends: 3951 [2025-03-16 19:23:47,897 INFO L226 Difference]: Without dead ends: 2341 [2025-03-16 19:23:47,899 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 19:23:47,900 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 68 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:47,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 215 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:47,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2025-03-16 19:23:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2319. [2025-03-16 19:23:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 1.4641932700603968) internal successors, (3394), 2318 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states 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 19:23:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3394 transitions. [2025-03-16 19:23:47,956 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3394 transitions. Word has length 43 [2025-03-16 19:23:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:47,956 INFO L471 AbstractCegarLoop]: Abstraction has 2319 states and 3394 transitions. [2025-03-16 19:23:47,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:23:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3394 transitions. [2025-03-16 19:23:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 19:23:47,958 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:47,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:23:47,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:23:47,958 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:47,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:47,959 INFO L85 PathProgramCache]: Analyzing trace with hash -57980668, now seen corresponding path program 1 times [2025-03-16 19:23:47,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:47,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235342851] [2025-03-16 19:23:47,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:47,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:47,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 19:23:47,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 19:23:47,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:47,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:23:48,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:48,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235342851] [2025-03-16 19:23:48,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235342851] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:23:48,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410533662] [2025-03-16 19:23:48,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:48,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:23:48,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:23:48,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:23:48,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 19:23:48,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 19:23:48,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 19:23:48,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:48,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:48,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-16 19:23:48,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:23:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:23:49,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:23:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:23:49,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410533662] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:23:49,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:23:49,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-03-16 19:23:49,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782354745] [2025-03-16 19:23:49,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:23:49,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-16 19:23:49,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:49,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-16 19:23:49,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2025-03-16 19:23:49,466 INFO L87 Difference]: Start difference. First operand 2319 states and 3394 transitions. Second operand has 22 states, 22 states have (on average 8.090909090909092) internal successors, (178), 22 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 19:23:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:54,625 INFO L93 Difference]: Finished difference Result 16063 states and 23164 transitions. [2025-03-16 19:23:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2025-03-16 19:23:54,625 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.090909090909092) internal successors, (178), 22 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-03-16 19:23:54,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:54,667 INFO L225 Difference]: With dead ends: 16063 [2025-03-16 19:23:54,668 INFO L226 Difference]: Without dead ends: 13765 [2025-03-16 19:23:54,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5906 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2666, Invalid=13084, Unknown=0, NotChecked=0, Total=15750 [2025-03-16 19:23:54,676 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 5094 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5094 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:54,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5094 Valid, 1400 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 19:23:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13765 states. [2025-03-16 19:23:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13765 to 11727. [2025-03-16 19:23:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11727 states, 11726 states have (on average 1.4225652396384103) internal successors, (16681), 11726 states have internal predecessors, (16681), 0 states have call successors, (0), 0 states 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 19:23:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11727 states to 11727 states and 16681 transitions. [2025-03-16 19:23:54,910 INFO L78 Accepts]: Start accepts. Automaton has 11727 states and 16681 transitions. Word has length 62 [2025-03-16 19:23:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:54,911 INFO L471 AbstractCegarLoop]: Abstraction has 11727 states and 16681 transitions. [2025-03-16 19:23:54,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.090909090909092) internal successors, (178), 22 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 19:23:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 11727 states and 16681 transitions. [2025-03-16 19:23:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 19:23:54,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:54,912 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:23:54,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 19:23:55,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:23:55,114 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:55,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:55,114 INFO L85 PathProgramCache]: Analyzing trace with hash 771011922, now seen corresponding path program 1 times [2025-03-16 19:23:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167239274] [2025-03-16 19:23:55,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:55,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:55,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 19:23:55,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 19:23:55,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:55,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:23:55,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:55,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167239274] [2025-03-16 19:23:55,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167239274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:55,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:55,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:23:55,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609562762] [2025-03-16 19:23:55,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:55,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:23:55,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:55,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:23:55,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:23:55,167 INFO L87 Difference]: Start difference. First operand 11727 states and 16681 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:55,223 INFO L93 Difference]: Finished difference Result 27498 states and 38868 transitions. [2025-03-16 19:23:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:23:55,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-16 19:23:55,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:55,266 INFO L225 Difference]: With dead ends: 27498 [2025-03-16 19:23:55,266 INFO L226 Difference]: Without dead ends: 18910 [2025-03-16 19:23:55,277 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 19:23:55,277 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 64 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:55,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 227 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:55,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18910 states. [2025-03-16 19:23:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18910 to 18908. [2025-03-16 19:23:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18908 states, 18907 states have (on average 1.3988469878880838) internal successors, (26448), 18907 states have internal predecessors, (26448), 0 states have call successors, (0), 0 states 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 19:23:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18908 states to 18908 states and 26448 transitions. [2025-03-16 19:23:55,642 INFO L78 Accepts]: Start accepts. Automaton has 18908 states and 26448 transitions. Word has length 63 [2025-03-16 19:23:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:55,642 INFO L471 AbstractCegarLoop]: Abstraction has 18908 states and 26448 transitions. [2025-03-16 19:23:55,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 18908 states and 26448 transitions. [2025-03-16 19:23:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 19:23:55,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:55,644 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:23:55,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:23:55,644 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:55,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:55,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2107037840, now seen corresponding path program 1 times [2025-03-16 19:23:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:55,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645408295] [2025-03-16 19:23:55,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:55,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:55,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 19:23:55,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 19:23:55,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:55,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:23:55,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645408295] [2025-03-16 19:23:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645408295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:55,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:55,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:23:55,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663057042] [2025-03-16 19:23:55,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:55,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:23:55,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:55,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:23:55,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:23:55,707 INFO L87 Difference]: Start difference. First operand 18908 states and 26448 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:55,837 INFO L93 Difference]: Finished difference Result 39557 states and 55702 transitions. [2025-03-16 19:23:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:23:55,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-16 19:23:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:55,898 INFO L225 Difference]: With dead ends: 39557 [2025-03-16 19:23:55,899 INFO L226 Difference]: Without dead ends: 31675 [2025-03-16 19:23:55,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:23:55,909 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 348 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:55,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 604 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31675 states. [2025-03-16 19:23:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31675 to 26481. [2025-03-16 19:23:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26481 states, 26480 states have (on average 1.392522658610272) internal successors, (36874), 26480 states have internal predecessors, (36874), 0 states have call successors, (0), 0 states 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 19:23:56,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26481 states to 26481 states and 36874 transitions. [2025-03-16 19:23:56,416 INFO L78 Accepts]: Start accepts. Automaton has 26481 states and 36874 transitions. Word has length 63 [2025-03-16 19:23:56,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:56,416 INFO L471 AbstractCegarLoop]: Abstraction has 26481 states and 36874 transitions. [2025-03-16 19:23:56,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:56,416 INFO L276 IsEmpty]: Start isEmpty. Operand 26481 states and 36874 transitions. [2025-03-16 19:23:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 19:23:56,418 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:56,418 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:23:56,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:23:56,418 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:56,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1585903242, now seen corresponding path program 1 times [2025-03-16 19:23:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861974994] [2025-03-16 19:23:56,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:56,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 19:23:56,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 19:23:56,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:56,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:23:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:56,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861974994] [2025-03-16 19:23:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861974994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:56,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:56,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:23:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124398004] [2025-03-16 19:23:56,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:56,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:23:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:56,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:23:56,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:23:56,522 INFO L87 Difference]: Start difference. First operand 26481 states and 36874 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:56,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:56,627 INFO L93 Difference]: Finished difference Result 47268 states and 65400 transitions. [2025-03-16 19:23:56,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:23:56,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-16 19:23:56,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:56,682 INFO L225 Difference]: With dead ends: 47268 [2025-03-16 19:23:56,682 INFO L226 Difference]: Without dead ends: 27430 [2025-03-16 19:23:56,704 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 19:23:56,705 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 68 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:56,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 276 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27430 states. [2025-03-16 19:23:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27430 to 25256. [2025-03-16 19:23:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25256 states, 25255 states have (on average 1.3733122154028905) internal successors, (34683), 25255 states have internal predecessors, (34683), 0 states have call successors, (0), 0 states 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 19:23:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25256 states to 25256 states and 34683 transitions. [2025-03-16 19:23:57,009 INFO L78 Accepts]: Start accepts. Automaton has 25256 states and 34683 transitions. Word has length 63 [2025-03-16 19:23:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:57,009 INFO L471 AbstractCegarLoop]: Abstraction has 25256 states and 34683 transitions. [2025-03-16 19:23:57,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 25256 states and 34683 transitions. [2025-03-16 19:23:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 19:23:57,011 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:57,011 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:23:57,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:23:57,012 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:57,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:57,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2124075890, now seen corresponding path program 1 times [2025-03-16 19:23:57,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:57,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324767857] [2025-03-16 19:23:57,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:57,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:57,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 19:23:57,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 19:23:57,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:57,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 19:23:57,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:57,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324767857] [2025-03-16 19:23:57,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324767857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:57,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:57,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:23:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391316483] [2025-03-16 19:23:57,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:57,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:23:57,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:57,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:23:57,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:23:57,083 INFO L87 Difference]: Start difference. First operand 25256 states and 34683 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:57,277 INFO L93 Difference]: Finished difference Result 46640 states and 64761 transitions. [2025-03-16 19:23:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:23:57,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-16 19:23:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:57,341 INFO L225 Difference]: With dead ends: 46640 [2025-03-16 19:23:57,341 INFO L226 Difference]: Without dead ends: 37753 [2025-03-16 19:23:57,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:23:57,356 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 347 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:57,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 576 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37753 states. [2025-03-16 19:23:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37753 to 32525. [2025-03-16 19:23:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32525 states, 32524 states have (on average 1.3683741237240192) internal successors, (44505), 32524 states have internal predecessors, (44505), 0 states have call successors, (0), 0 states 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 19:23:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32525 states to 32525 states and 44505 transitions. [2025-03-16 19:23:57,855 INFO L78 Accepts]: Start accepts. Automaton has 32525 states and 44505 transitions. Word has length 63 [2025-03-16 19:23:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:57,855 INFO L471 AbstractCegarLoop]: Abstraction has 32525 states and 44505 transitions. [2025-03-16 19:23:57,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 32525 states and 44505 transitions. [2025-03-16 19:23:57,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 19:23:57,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:57,939 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:23:57,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:23:57,939 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:57,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2128543094, now seen corresponding path program 1 times [2025-03-16 19:23:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:57,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864624016] [2025-03-16 19:23:57,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:57,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 19:23:57,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 19:23:57,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:57,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 19:23:58,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864624016] [2025-03-16 19:23:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864624016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:23:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467423903] [2025-03-16 19:23:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:58,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:23:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:58,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:23:58,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:23:58,016 INFO L87 Difference]: Start difference. First operand 32525 states and 44505 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:58,124 INFO L93 Difference]: Finished difference Result 47895 states and 66157 transitions. [2025-03-16 19:23:58,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:23:58,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-16 19:23:58,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:58,182 INFO L225 Difference]: With dead ends: 47895 [2025-03-16 19:23:58,183 INFO L226 Difference]: Without dead ends: 42709 [2025-03-16 19:23:58,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-16 19:23:58,201 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 354 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:58,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 563 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42709 states. [2025-03-16 19:23:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42709 to 37491. [2025-03-16 19:23:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37491 states, 37490 states have (on average 1.3678580954921313) internal successors, (51281), 37490 states have internal predecessors, (51281), 0 states have call successors, (0), 0 states 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 19:23:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37491 states to 37491 states and 51281 transitions. [2025-03-16 19:23:58,664 INFO L78 Accepts]: Start accepts. Automaton has 37491 states and 51281 transitions. Word has length 64 [2025-03-16 19:23:58,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:58,665 INFO L471 AbstractCegarLoop]: Abstraction has 37491 states and 51281 transitions. [2025-03-16 19:23:58,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:58,665 INFO L276 IsEmpty]: Start isEmpty. Operand 37491 states and 51281 transitions. [2025-03-16 19:23:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 19:23:58,667 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:58,667 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:23:58,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:23:58,667 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:58,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash -403726690, now seen corresponding path program 1 times [2025-03-16 19:23:58,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:58,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685058724] [2025-03-16 19:23:58,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:58,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:58,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 19:23:58,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 19:23:58,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:58,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:23:58,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685058724] [2025-03-16 19:23:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685058724] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:23:58,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:23:58,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:23:58,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94942434] [2025-03-16 19:23:58,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:23:58,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:23:58,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:23:58,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:23:58,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:23:58,709 INFO L87 Difference]: Start difference. First operand 37491 states and 51281 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:23:58,878 INFO L93 Difference]: Finished difference Result 83706 states and 114440 transitions. [2025-03-16 19:23:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:23:58,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-16 19:23:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:23:58,942 INFO L225 Difference]: With dead ends: 83706 [2025-03-16 19:23:58,942 INFO L226 Difference]: Without dead ends: 48091 [2025-03-16 19:23:58,977 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 19:23:58,978 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 64 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:23:58,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 266 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:23:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48091 states. [2025-03-16 19:23:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48091 to 45820. [2025-03-16 19:23:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45820 states, 45819 states have (on average 1.354547240227853) internal successors, (62064), 45819 states have internal predecessors, (62064), 0 states have call successors, (0), 0 states 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 19:23:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45820 states to 45820 states and 62064 transitions. [2025-03-16 19:23:59,593 INFO L78 Accepts]: Start accepts. Automaton has 45820 states and 62064 transitions. Word has length 66 [2025-03-16 19:23:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:23:59,593 INFO L471 AbstractCegarLoop]: Abstraction has 45820 states and 62064 transitions. [2025-03-16 19:23:59,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:23:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 45820 states and 62064 transitions. [2025-03-16 19:23:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 19:23:59,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:23:59,596 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:23:59,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:23:59,596 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:23:59,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:23:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash -951748774, now seen corresponding path program 1 times [2025-03-16 19:23:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:23:59,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3294568] [2025-03-16 19:23:59,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:59,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:23:59,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:23:59,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:23:59,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:59,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:23:59,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:23:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3294568] [2025-03-16 19:23:59,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3294568] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:23:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615719949] [2025-03-16 19:23:59,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:23:59,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:23:59,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:23:59,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:23:59,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 19:23:59,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:23:59,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:23:59,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:23:59,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:23:59,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 19:23:59,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:24:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:00,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:24:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:00,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615719949] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:24:00,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:24:00,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-16 19:24:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24296940] [2025-03-16 19:24:00,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:24:00,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-16 19:24:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:24:00,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-16 19:24:00,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:24:00,201 INFO L87 Difference]: Start difference. First operand 45820 states and 62064 transitions. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 19:24:00,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:24:00,540 INFO L93 Difference]: Finished difference Result 93331 states and 126706 transitions. [2025-03-16 19:24:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:24:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-16 19:24:00,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:24:00,616 INFO L225 Difference]: With dead ends: 93331 [2025-03-16 19:24:00,616 INFO L226 Difference]: Without dead ends: 70528 [2025-03-16 19:24:00,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2025-03-16 19:24:00,646 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 609 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:24:00,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 401 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:24:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70528 states. [2025-03-16 19:24:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70528 to 54807. [2025-03-16 19:24:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54807 states, 54806 states have (on average 1.3512571616246396) internal successors, (74057), 54806 states have internal predecessors, (74057), 0 states have call successors, (0), 0 states 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 19:24:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54807 states to 54807 states and 74057 transitions. [2025-03-16 19:24:01,248 INFO L78 Accepts]: Start accepts. Automaton has 54807 states and 74057 transitions. Word has length 68 [2025-03-16 19:24:01,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:24:01,248 INFO L471 AbstractCegarLoop]: Abstraction has 54807 states and 74057 transitions. [2025-03-16 19:24:01,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 19:24:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 54807 states and 74057 transitions. [2025-03-16 19:24:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 19:24:01,250 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:24:01,250 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:24:01,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 19:24:01,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 19:24:01,455 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:24:01,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:24:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1398163012, now seen corresponding path program 1 times [2025-03-16 19:24:01,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:24:01,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15139490] [2025-03-16 19:24:01,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:24:01,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:24:01,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:24:01,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:24:01,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:24:01,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:24:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:01,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:24:01,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15139490] [2025-03-16 19:24:01,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15139490] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:24:01,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939002400] [2025-03-16 19:24:01,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:24:01,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:24:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:24:01,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:24:01,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 19:24:01,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 19:24:01,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 19:24:01,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:24:01,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:24:01,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 19:24:01,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:24:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:01,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:24:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939002400] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:24:01,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:24:01,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-16 19:24:01,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365832504] [2025-03-16 19:24:01,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:24:01,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-16 19:24:01,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:24:01,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-16 19:24:01,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:24:01,816 INFO L87 Difference]: Start difference. First operand 54807 states and 74057 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 19:24:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:24:02,179 INFO L93 Difference]: Finished difference Result 109925 states and 147915 transitions. [2025-03-16 19:24:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 19:24:02,179 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-16 19:24:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:24:02,447 INFO L225 Difference]: With dead ends: 109925 [2025-03-16 19:24:02,448 INFO L226 Difference]: Without dead ends: 64593 [2025-03-16 19:24:02,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-03-16 19:24:02,471 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 434 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:24:02,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 394 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:24:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64593 states. [2025-03-16 19:24:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64593 to 55795. [2025-03-16 19:24:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55795 states, 55794 states have (on average 1.3453059468760082) internal successors, (75060), 55794 states have internal predecessors, (75060), 0 states have call successors, (0), 0 states 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 19:24:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55795 states to 55795 states and 75060 transitions. [2025-03-16 19:24:03,269 INFO L78 Accepts]: Start accepts. Automaton has 55795 states and 75060 transitions. Word has length 68 [2025-03-16 19:24:03,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:24:03,269 INFO L471 AbstractCegarLoop]: Abstraction has 55795 states and 75060 transitions. [2025-03-16 19:24:03,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 19:24:03,269 INFO L276 IsEmpty]: Start isEmpty. Operand 55795 states and 75060 transitions. [2025-03-16 19:24:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 19:24:03,272 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:24:03,272 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:24:03,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 19:24:03,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:24:03,473 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:24:03,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:24:03,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1799351760, now seen corresponding path program 1 times [2025-03-16 19:24:03,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:24:03,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056484353] [2025-03-16 19:24:03,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:24:03,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:24:03,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 19:24:03,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 19:24:03,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:24:03,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:24:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:03,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:24:03,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056484353] [2025-03-16 19:24:03,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056484353] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:24:03,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844959558] [2025-03-16 19:24:03,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:24:03,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:24:03,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:24:03,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:24:03,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 19:24:03,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 19:24:03,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 19:24:03,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:24:03,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:24:03,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 19:24:03,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:24:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:03,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:24:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844959558] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:24:03,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:24:03,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-16 19:24:03,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370392464] [2025-03-16 19:24:03,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:24:03,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-16 19:24:03,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:24:03,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-16 19:24:03,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:24:03,961 INFO L87 Difference]: Start difference. First operand 55795 states and 75060 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:24:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:24:04,430 INFO L93 Difference]: Finished difference Result 149129 states and 201620 transitions. [2025-03-16 19:24:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:24:04,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-16 19:24:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:24:04,525 INFO L225 Difference]: With dead ends: 149129 [2025-03-16 19:24:04,525 INFO L226 Difference]: Without dead ends: 97726 [2025-03-16 19:24:04,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2025-03-16 19:24:04,550 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 1528 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:24:04,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 321 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:24:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97726 states. [2025-03-16 19:24:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97726 to 63111. [2025-03-16 19:24:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63111 states, 63110 states have (on average 1.347583584218032) internal successors, (85046), 63110 states have internal predecessors, (85046), 0 states have call successors, (0), 0 states 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 19:24:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63111 states to 63111 states and 85046 transitions. [2025-03-16 19:24:05,599 INFO L78 Accepts]: Start accepts. Automaton has 63111 states and 85046 transitions. Word has length 69 [2025-03-16 19:24:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:24:05,599 INFO L471 AbstractCegarLoop]: Abstraction has 63111 states and 85046 transitions. [2025-03-16 19:24:05,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:24:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 63111 states and 85046 transitions. [2025-03-16 19:24:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-16 19:24:05,602 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:24:05,602 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:24:05,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 19:24:05,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 19:24:05,802 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:24:05,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:24:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1774679006, now seen corresponding path program 1 times [2025-03-16 19:24:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:24:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261009319] [2025-03-16 19:24:05,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:24:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:24:05,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-16 19:24:05,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 19:24:05,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:24:05,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:24:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:06,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:24:06,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261009319] [2025-03-16 19:24:06,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261009319] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:24:06,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580534678] [2025-03-16 19:24:06,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:24:06,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:24:06,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:24:06,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:24:06,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 19:24:06,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-16 19:24:06,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 19:24:06,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:24:06,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:24:06,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-16 19:24:06,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:24:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:06,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:24:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:24:07,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580534678] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:24:07,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:24:07,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 30 [2025-03-16 19:24:07,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280206811] [2025-03-16 19:24:07,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:24:07,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-16 19:24:07,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:24:07,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-16 19:24:07,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2025-03-16 19:24:07,568 INFO L87 Difference]: Start difference. First operand 63111 states and 85046 transitions. Second operand has 31 states, 31 states have (on average 6.258064516129032) internal successors, (194), 30 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 19:24:58,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:24:58,432 INFO L93 Difference]: Finished difference Result 2519384 states and 3376352 transitions. [2025-03-16 19:24:58,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 822 states. [2025-03-16 19:24:58,432 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.258064516129032) internal successors, (194), 30 states have internal predecessors, (194), 0 states have call successors, (0), 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 70 [2025-03-16 19:24:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:25:03,119 INFO L225 Difference]: With dead ends: 2519384 [2025-03-16 19:25:03,119 INFO L226 Difference]: Without dead ends: 2455266 [2025-03-16 19:25:03,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 849 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363650 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=66221, Invalid=657129, Unknown=0, NotChecked=0, Total=723350 [2025-03-16 19:25:03,650 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 23431 mSDsluCounter, 7290 mSDsCounter, 0 mSdLazyCounter, 11145 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23431 SdHoareTripleChecker+Valid, 7627 SdHoareTripleChecker+Invalid, 11753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 11145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:25:03,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23431 Valid, 7627 Invalid, 11753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [608 Valid, 11145 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2025-03-16 19:25:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455266 states.