./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.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 3af6b76c8112c46f4f3f430659495baba58dab9f6300080b3889ede952fb5526 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 15:19:12,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 15:19:12,109 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 15:19:12,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 15:19:12,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 15:19:12,125 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 15:19:12,126 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 15:19:12,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 15:19:12,126 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 15:19:12,126 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 15:19:12,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 15:19:12,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 15:19:12,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 15:19:12,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 15:19:12,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 15:19:12,128 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:19:12,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 15:19:12,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 15:19:12,129 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 15:19:12,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 15:19:12,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 15:19:12,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 15:19:12,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 15:19:12,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 15:19:12,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 15:19:12,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 15:19:12,129 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 -> 3af6b76c8112c46f4f3f430659495baba58dab9f6300080b3889ede952fb5526 [2025-03-03 15:19:12,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 15:19:12,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 15:19:12,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 15:19:12,333 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 15:19:12,334 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 15:19:12,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-03 15:19:13,436 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92260e430/3b4acf556e0644bbb5b3bedc2f66d1d8/FLAG1aeae967f [2025-03-03 15:19:13,719 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 15:19:13,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-03 15:19:13,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92260e430/3b4acf556e0644bbb5b3bedc2f66d1d8/FLAG1aeae967f [2025-03-03 15:19:13,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92260e430/3b4acf556e0644bbb5b3bedc2f66d1d8 [2025-03-03 15:19:13,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 15:19:13,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 15:19:13,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 15:19:13,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 15:19:13,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 15:19:13,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:19:13" (1/1) ... [2025-03-03 15:19:13,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d6a3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:13, skipping insertion in model container [2025-03-03 15:19:13,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:19:13" (1/1) ... [2025-03-03 15:19:13,791 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 15:19:13,946 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2025-03-03 15:19:13,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:19:13,989 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 15:19:14,045 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2025-03-03 15:19:14,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:19:14,075 INFO L204 MainTranslator]: Completed translation [2025-03-03 15:19:14,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14 WrapperNode [2025-03-03 15:19:14,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 15:19:14,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 15:19:14,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 15:19:14,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 15:19:14,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,122 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 670 [2025-03-03 15:19:14,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 15:19:14,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 15:19:14,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 15:19:14,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 15:19:14,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,148 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]. [2025-03-03 15:19:14,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,162 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 15:19:14,173 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 15:19:14,173 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 15:19:14,173 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 15:19:14,177 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (1/1) ... [2025-03-03 15:19:14,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:19:14,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:19:14,201 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) [2025-03-03 15:19:14,203 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 [2025-03-03 15:19:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 15:19:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 15:19:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 15:19:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 15:19:14,302 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 15:19:14,303 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 15:19:14,723 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L316: havoc main_~node3__newmax~0#1; [2025-03-03 15:19:14,723 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L667: havoc main_~node2____CPAchecker_TMP_1~0#1;havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-03 15:19:14,723 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L787: havoc main_~node1____CPAchecker_TMP_1~0#1;havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-03 15:19:14,723 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L242: havoc main_~node1__newmax~0#1;havoc main_~init__r121~0#1, main_~init__r131~0#1, main_~init__r211~0#1, main_~init__r231~0#1, main_~init__r311~0#1, main_~init__r321~0#1, main_~init__r122~0#1, main_~init__tmp~0#1, main_~init__r132~0#1, main_~init__tmp___0~0#1, main_~init__r212~0#1, main_~init__tmp___1~0#1, main_~init__r232~0#1, main_~init__tmp___2~0#1, main_~init__r312~0#1, main_~init__tmp___3~0#1, main_~init__r322~0#1, main_~init__tmp___4~0#1, main_~init__tmp___5~0#1; [2025-03-03 15:19:14,723 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L279: havoc main_~node2__newmax~0#1; [2025-03-03 15:19:14,723 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L397: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2025-03-03 15:19:14,723 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L547: havoc main_~node3____CPAchecker_TMP_1~0#1;havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-03 15:19:14,758 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2025-03-03 15:19:14,758 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 15:19:14,769 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 15:19:14,769 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 15:19:14,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:19:14 BoogieIcfgContainer [2025-03-03 15:19:14,769 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 15:19:14,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 15:19:14,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 15:19:14,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 15:19:14,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 03:19:13" (1/3) ... [2025-03-03 15:19:14,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26704b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:19:14, skipping insertion in model container [2025-03-03 15:19:14,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:19:14" (2/3) ... [2025-03-03 15:19:14,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26704b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:19:14, skipping insertion in model container [2025-03-03 15:19:14,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:19:14" (3/3) ... [2025-03-03 15:19:14,777 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2025-03-03 15:19:14,787 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 15:19:14,791 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 149 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-03 15:19:14,845 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 15:19:14,854 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;@3594bdc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 15:19:14,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 15:19:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 148 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-03 15:19:14,867 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:14,867 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:14,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:14,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash -123693292, now seen corresponding path program 1 times [2025-03-03 15:19:14,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:14,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842605568] [2025-03-03 15:19:14,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:14,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:14,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-03 15:19:15,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-03 15:19:15,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:15,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:15,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842605568] [2025-03-03 15:19:15,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842605568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:15,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:15,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595064113] [2025-03-03 15:19:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:15,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:15,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:15,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:15,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:15,360 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7346938775510203) internal successors, (255), 148 states have internal predecessors, (255), 0 states have call successors, (0), 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 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:15,428 INFO L93 Difference]: Finished difference Result 335 states and 559 transitions. [2025-03-03 15:19:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:15,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2025-03-03 15:19:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:15,434 INFO L225 Difference]: With dead ends: 335 [2025-03-03 15:19:15,434 INFO L226 Difference]: Without dead ends: 231 [2025-03-03 15:19:15,436 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 [2025-03-03 15:19:15,438 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 151 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:15,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 448 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-03-03 15:19:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2025-03-03 15:19:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.5814977973568283) internal successors, (359), 227 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 359 transitions. [2025-03-03 15:19:15,472 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 359 transitions. Word has length 56 [2025-03-03 15:19:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:15,472 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 359 transitions. [2025-03-03 15:19:15,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 359 transitions. [2025-03-03 15:19:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-03 15:19:15,473 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:15,474 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:15,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 15:19:15,474 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:15,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:15,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1821977668, now seen corresponding path program 1 times [2025-03-03 15:19:15,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:15,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433808454] [2025-03-03 15:19:15,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:15,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-03 15:19:15,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-03 15:19:15,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:15,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:15,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:15,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433808454] [2025-03-03 15:19:15,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433808454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:15,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:15,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:15,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676518294] [2025-03-03 15:19:15,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:15,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:15,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:15,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:15,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:15,616 INFO L87 Difference]: Start difference. First operand 228 states and 359 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:15,655 INFO L93 Difference]: Finished difference Result 566 states and 911 transitions. [2025-03-03 15:19:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:15,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2025-03-03 15:19:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:15,659 INFO L225 Difference]: With dead ends: 566 [2025-03-03 15:19:15,659 INFO L226 Difference]: Without dead ends: 389 [2025-03-03 15:19:15,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:15,660 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:15,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-03-03 15:19:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2025-03-03 15:19:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5989583333333333) internal successors, (614), 384 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 614 transitions. [2025-03-03 15:19:15,675 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 614 transitions. Word has length 58 [2025-03-03 15:19:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:15,675 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 614 transitions. [2025-03-03 15:19:15,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 614 transitions. [2025-03-03 15:19:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-03 15:19:15,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:15,676 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:15,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 15:19:15,677 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:15,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:15,677 INFO L85 PathProgramCache]: Analyzing trace with hash -617822956, now seen corresponding path program 1 times [2025-03-03 15:19:15,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:15,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902304008] [2025-03-03 15:19:15,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:15,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-03 15:19:15,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-03 15:19:15,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:15,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:15,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:15,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902304008] [2025-03-03 15:19:15,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902304008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:15,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:15,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:15,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970933256] [2025-03-03 15:19:15,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:15,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:15,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:15,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:15,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:15,796 INFO L87 Difference]: Start difference. First operand 385 states and 614 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:15,838 INFO L93 Difference]: Finished difference Result 1021 states and 1648 transitions. [2025-03-03 15:19:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-03-03 15:19:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:15,841 INFO L225 Difference]: With dead ends: 1021 [2025-03-03 15:19:15,841 INFO L226 Difference]: Without dead ends: 687 [2025-03-03 15:19:15,842 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 [2025-03-03 15:19:15,843 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:15,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 425 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2025-03-03 15:19:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 681. [2025-03-03 15:19:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 1.6029411764705883) internal successors, (1090), 680 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1090 transitions. [2025-03-03 15:19:15,870 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1090 transitions. Word has length 60 [2025-03-03 15:19:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:15,870 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1090 transitions. [2025-03-03 15:19:15,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1090 transitions. [2025-03-03 15:19:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-03 15:19:15,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:15,871 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:15,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 15:19:15,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:15,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -668874364, now seen corresponding path program 1 times [2025-03-03 15:19:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598686494] [2025-03-03 15:19:15,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:15,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-03 15:19:15,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 15:19:15,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:15,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598686494] [2025-03-03 15:19:16,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598686494] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:16,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:16,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:19:16,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528647106] [2025-03-03 15:19:16,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:16,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:19:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:16,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:19:16,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:16,017 INFO L87 Difference]: Start difference. First operand 681 states and 1090 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) [2025-03-03 15:19:16,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:16,175 INFO L93 Difference]: Finished difference Result 2973 states and 4848 transitions. [2025-03-03 15:19:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 15:19:16,176 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 62 [2025-03-03 15:19:16,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:16,204 INFO L225 Difference]: With dead ends: 2973 [2025-03-03 15:19:16,205 INFO L226 Difference]: Without dead ends: 2343 [2025-03-03 15:19:16,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-03 15:19:16,209 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 1024 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:16,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1574 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:19:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2025-03-03 15:19:16,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 1233. [2025-03-03 15:19:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.6112012987012987) internal successors, (1985), 1232 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1985 transitions. [2025-03-03 15:19:16,255 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1985 transitions. Word has length 62 [2025-03-03 15:19:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:16,255 INFO L471 AbstractCegarLoop]: Abstraction has 1233 states and 1985 transitions. [2025-03-03 15:19:16,255 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) [2025-03-03 15:19:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1985 transitions. [2025-03-03 15:19:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-03 15:19:16,258 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:16,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:16,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 15:19:16,258 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:16,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:16,261 INFO L85 PathProgramCache]: Analyzing trace with hash 741610022, now seen corresponding path program 1 times [2025-03-03 15:19:16,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:16,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609040183] [2025-03-03 15:19:16,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:16,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:16,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-03 15:19:16,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-03 15:19:16,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:16,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:16,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:16,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609040183] [2025-03-03 15:19:16,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609040183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:16,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:16,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:19:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998299] [2025-03-03 15:19:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:16,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:19:16,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:16,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:19:16,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:19:16,363 INFO L87 Difference]: Start difference. First operand 1233 states and 1985 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2025-03-03 15:19:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:16,432 INFO L93 Difference]: Finished difference Result 3613 states and 5881 transitions. [2025-03-03 15:19:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:19:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 [2025-03-03 15:19:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:16,439 INFO L225 Difference]: With dead ends: 3613 [2025-03-03 15:19:16,439 INFO L226 Difference]: Without dead ends: 2431 [2025-03-03 15:19:16,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:16,441 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 456 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:16,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 769 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2025-03-03 15:19:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1823. [2025-03-03 15:19:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 1.6169045005488474) internal successors, (2946), 1822 states have internal predecessors, (2946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:16,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2946 transitions. [2025-03-03 15:19:16,475 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2946 transitions. Word has length 63 [2025-03-03 15:19:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:16,475 INFO L471 AbstractCegarLoop]: Abstraction has 1823 states and 2946 transitions. [2025-03-03 15:19:16,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2025-03-03 15:19:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2946 transitions. [2025-03-03 15:19:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-03 15:19:16,477 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:16,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:16,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 15:19:16,477 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:16,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1516863655, now seen corresponding path program 1 times [2025-03-03 15:19:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:16,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052972933] [2025-03-03 15:19:16,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:16,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:16,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-03 15:19:16,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-03 15:19:16,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:16,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:16,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:16,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052972933] [2025-03-03 15:19:16,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052972933] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:16,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:16,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:19:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297351428] [2025-03-03 15:19:16,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:16,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:19:16,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:16,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:19:16,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:19:16,589 INFO L87 Difference]: Start difference. First operand 1823 states and 2946 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:16,658 INFO L93 Difference]: Finished difference Result 5307 states and 8625 transitions. [2025-03-03 15:19:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:19:16,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-03 15:19:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:16,669 INFO L225 Difference]: With dead ends: 5307 [2025-03-03 15:19:16,669 INFO L226 Difference]: Without dead ends: 3535 [2025-03-03 15:19:16,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:16,675 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 456 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:16,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 767 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2025-03-03 15:19:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 2667. [2025-03-03 15:19:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2666 states have (on average 1.6151537884471119) internal successors, (4306), 2666 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4306 transitions. [2025-03-03 15:19:16,731 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4306 transitions. Word has length 64 [2025-03-03 15:19:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:16,731 INFO L471 AbstractCegarLoop]: Abstraction has 2667 states and 4306 transitions. [2025-03-03 15:19:16,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4306 transitions. [2025-03-03 15:19:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-03 15:19:16,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:16,734 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:16,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 15:19:16,735 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:16,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash -220166871, now seen corresponding path program 1 times [2025-03-03 15:19:16,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:16,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929221937] [2025-03-03 15:19:16,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:16,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-03 15:19:16,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-03 15:19:16,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:16,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:16,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:16,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929221937] [2025-03-03 15:19:16,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929221937] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:16,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:19:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964884052] [2025-03-03 15:19:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:16,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:19:16,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:16,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:19:16,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:19:16,845 INFO L87 Difference]: Start difference. First operand 2667 states and 4306 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:16,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:16,937 INFO L93 Difference]: Finished difference Result 7707 states and 12501 transitions. [2025-03-03 15:19:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:19:16,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2025-03-03 15:19:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:16,954 INFO L225 Difference]: With dead ends: 7707 [2025-03-03 15:19:16,954 INFO L226 Difference]: Without dead ends: 5091 [2025-03-03 15:19:16,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:16,960 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 454 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:16,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 769 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:19:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2025-03-03 15:19:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 3863. [2025-03-03 15:19:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3862 states have (on average 1.6126359399274988) internal successors, (6228), 3862 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 6228 transitions. [2025-03-03 15:19:17,043 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 6228 transitions. Word has length 65 [2025-03-03 15:19:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:17,043 INFO L471 AbstractCegarLoop]: Abstraction has 3863 states and 6228 transitions. [2025-03-03 15:19:17,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 6228 transitions. [2025-03-03 15:19:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 15:19:17,045 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:17,045 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:17,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 15:19:17,045 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:17,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash 620677441, now seen corresponding path program 1 times [2025-03-03 15:19:17,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:17,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058163603] [2025-03-03 15:19:17,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:17,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:17,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 15:19:17,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 15:19:17,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:17,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:17,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:17,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058163603] [2025-03-03 15:19:17,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058163603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:17,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:17,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:17,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537799690] [2025-03-03 15:19:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:17,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:17,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:17,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:17,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:17,105 INFO L87 Difference]: Start difference. First operand 3863 states and 6228 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) [2025-03-03 15:19:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:17,149 INFO L93 Difference]: Finished difference Result 8640 states and 14034 transitions. [2025-03-03 15:19:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:17,149 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 [2025-03-03 15:19:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:17,165 INFO L225 Difference]: With dead ends: 8640 [2025-03-03 15:19:17,165 INFO L226 Difference]: Without dead ends: 5875 [2025-03-03 15:19:17,170 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 [2025-03-03 15:19:17,171 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 138 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:17,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 524 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2025-03-03 15:19:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5873. [2025-03-03 15:19:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5873 states, 5872 states have (on average 1.6130790190735695) internal successors, (9472), 5872 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5873 states to 5873 states and 9472 transitions. [2025-03-03 15:19:17,284 INFO L78 Accepts]: Start accepts. Automaton has 5873 states and 9472 transitions. Word has length 66 [2025-03-03 15:19:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:17,285 INFO L471 AbstractCegarLoop]: Abstraction has 5873 states and 9472 transitions. [2025-03-03 15:19:17,285 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) [2025-03-03 15:19:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5873 states and 9472 transitions. [2025-03-03 15:19:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 15:19:17,286 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:17,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:17,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 15:19:17,287 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:17,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash 307153729, now seen corresponding path program 1 times [2025-03-03 15:19:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:17,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014835984] [2025-03-03 15:19:17,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:17,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 15:19:17,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 15:19:17,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:17,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:17,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:17,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014835984] [2025-03-03 15:19:17,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014835984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228438295] [2025-03-03 15:19:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:17,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:17,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:17,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:17,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:17,355 INFO L87 Difference]: Start difference. First operand 5873 states and 9472 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) [2025-03-03 15:19:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:17,409 INFO L93 Difference]: Finished difference Result 12987 states and 20989 transitions. [2025-03-03 15:19:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:17,410 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 [2025-03-03 15:19:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:17,443 INFO L225 Difference]: With dead ends: 12987 [2025-03-03 15:19:17,443 INFO L226 Difference]: Without dead ends: 8817 [2025-03-03 15:19:17,451 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 [2025-03-03 15:19:17,452 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 126 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:17,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 469 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8817 states. [2025-03-03 15:19:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8817 to 8815. [2025-03-03 15:19:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 8814 states have (on average 1.6056274109371456) internal successors, (14152), 8814 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 14152 transitions. [2025-03-03 15:19:17,637 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 14152 transitions. Word has length 66 [2025-03-03 15:19:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:17,637 INFO L471 AbstractCegarLoop]: Abstraction has 8815 states and 14152 transitions. [2025-03-03 15:19:17,637 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) [2025-03-03 15:19:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 14152 transitions. [2025-03-03 15:19:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 15:19:17,639 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:17,639 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:17,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 15:19:17,640 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:17,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:17,640 INFO L85 PathProgramCache]: Analyzing trace with hash -56595903, now seen corresponding path program 1 times [2025-03-03 15:19:17,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:17,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25717691] [2025-03-03 15:19:17,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:17,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:17,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 15:19:17,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 15:19:17,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:17,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:17,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:17,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25717691] [2025-03-03 15:19:17,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25717691] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:17,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:17,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:17,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078326637] [2025-03-03 15:19:17,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:17,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:17,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:17,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:17,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:17,694 INFO L87 Difference]: Start difference. First operand 8815 states and 14152 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) [2025-03-03 15:19:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:17,744 INFO L93 Difference]: Finished difference Result 19164 states and 30838 transitions. [2025-03-03 15:19:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:17,744 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 [2025-03-03 15:19:17,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:17,769 INFO L225 Difference]: With dead ends: 19164 [2025-03-03 15:19:17,769 INFO L226 Difference]: Without dead ends: 12900 [2025-03-03 15:19:17,779 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 [2025-03-03 15:19:17,780 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 132 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:17,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 509 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2025-03-03 15:19:17,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 12898. [2025-03-03 15:19:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12898 states, 12897 states have (on average 1.5971931456927968) internal successors, (20599), 12897 states have internal predecessors, (20599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 20599 transitions. [2025-03-03 15:19:17,976 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 20599 transitions. Word has length 66 [2025-03-03 15:19:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:17,976 INFO L471 AbstractCegarLoop]: Abstraction has 12898 states and 20599 transitions. [2025-03-03 15:19:17,976 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) [2025-03-03 15:19:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 20599 transitions. [2025-03-03 15:19:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 15:19:17,977 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:17,977 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:17,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 15:19:17,977 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:17,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1075482485, now seen corresponding path program 1 times [2025-03-03 15:19:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953644108] [2025-03-03 15:19:17,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:17,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 15:19:17,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 15:19:17,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:17,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953644108] [2025-03-03 15:19:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953644108] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:18,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:18,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:19:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79299412] [2025-03-03 15:19:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:18,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:19:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:18,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:19:18,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:18,192 INFO L87 Difference]: Start difference. First operand 12898 states and 20599 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:18,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:18,321 INFO L93 Difference]: Finished difference Result 25713 states and 41080 transitions. [2025-03-03 15:19:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:19:18,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-03 15:19:18,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:18,347 INFO L225 Difference]: With dead ends: 25713 [2025-03-03 15:19:18,348 INFO L226 Difference]: Without dead ends: 12900 [2025-03-03 15:19:18,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:19:18,363 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 385 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:18,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 619 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12900 states. [2025-03-03 15:19:18,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12900 to 12898. [2025-03-03 15:19:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12898 states, 12897 states have (on average 1.5875009692176476) internal successors, (20474), 12897 states have internal predecessors, (20474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 20474 transitions. [2025-03-03 15:19:18,567 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 20474 transitions. Word has length 67 [2025-03-03 15:19:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:18,568 INFO L471 AbstractCegarLoop]: Abstraction has 12898 states and 20474 transitions. [2025-03-03 15:19:18,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 20474 transitions. [2025-03-03 15:19:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 15:19:18,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:18,569 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:18,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 15:19:18,569 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:18,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:18,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2144846193, now seen corresponding path program 1 times [2025-03-03 15:19:18,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:18,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91740626] [2025-03-03 15:19:18,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:18,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:18,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 15:19:18,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 15:19:18,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:18,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:18,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:18,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91740626] [2025-03-03 15:19:18,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91740626] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:18,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:18,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:19:18,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608770627] [2025-03-03 15:19:18,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:18,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:19:18,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:18,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:19:18,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:18,780 INFO L87 Difference]: Start difference. First operand 12898 states and 20474 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:18,909 INFO L93 Difference]: Finished difference Result 36933 states and 58774 transitions. [2025-03-03 15:19:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:19:18,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2025-03-03 15:19:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:18,952 INFO L225 Difference]: With dead ends: 36933 [2025-03-03 15:19:18,952 INFO L226 Difference]: Without dead ends: 24120 [2025-03-03 15:19:18,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:19:18,972 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 253 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:18,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 621 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24120 states. [2025-03-03 15:19:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24120 to 24118. [2025-03-03 15:19:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24118 states, 24117 states have (on average 1.5768545009744164) internal successors, (38029), 24117 states have internal predecessors, (38029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24118 states to 24118 states and 38029 transitions. [2025-03-03 15:19:19,320 INFO L78 Accepts]: Start accepts. Automaton has 24118 states and 38029 transitions. Word has length 70 [2025-03-03 15:19:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:19,320 INFO L471 AbstractCegarLoop]: Abstraction has 24118 states and 38029 transitions. [2025-03-03 15:19:19,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 24118 states and 38029 transitions. [2025-03-03 15:19:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 15:19:19,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:19,321 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:19,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 15:19:19,322 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:19,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2066677848, now seen corresponding path program 1 times [2025-03-03 15:19:19,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:19,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017686971] [2025-03-03 15:19:19,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:19,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:19,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 15:19:19,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 15:19:19,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:19,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017686971] [2025-03-03 15:19:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017686971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:19:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662159795] [2025-03-03 15:19:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:19,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:19:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:19,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:19:19,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:19,637 INFO L87 Difference]: Start difference. First operand 24118 states and 38029 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:19,717 INFO L93 Difference]: Finished difference Result 24844 states and 39116 transitions. [2025-03-03 15:19:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:19:19,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2025-03-03 15:19:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:19,762 INFO L225 Difference]: With dead ends: 24844 [2025-03-03 15:19:19,762 INFO L226 Difference]: Without dead ends: 24842 [2025-03-03 15:19:19,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:19,771 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:19,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 880 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24842 states. [2025-03-03 15:19:20,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24842 to 24842. [2025-03-03 15:19:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24842 states, 24841 states have (on average 1.5596795620144117) internal successors, (38744), 24841 states have internal predecessors, (38744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24842 states to 24842 states and 38744 transitions. [2025-03-03 15:19:20,082 INFO L78 Accepts]: Start accepts. Automaton has 24842 states and 38744 transitions. Word has length 71 [2025-03-03 15:19:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:20,083 INFO L471 AbstractCegarLoop]: Abstraction has 24842 states and 38744 transitions. [2025-03-03 15:19:20,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24842 states and 38744 transitions. [2025-03-03 15:19:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 15:19:20,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:20,085 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:20,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 15:19:20,085 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:20,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1313473492, now seen corresponding path program 1 times [2025-03-03 15:19:20,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:20,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2318477] [2025-03-03 15:19:20,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:20,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:20,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 15:19:20,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 15:19:20,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:20,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 15:19:20,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:20,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2318477] [2025-03-03 15:19:20,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2318477] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:20,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:20,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:19:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002876562] [2025-03-03 15:19:20,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:20,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:19:20,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:20,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:19:20,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:20,244 INFO L87 Difference]: Start difference. First operand 24842 states and 38744 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:20,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:20,473 INFO L93 Difference]: Finished difference Result 60730 states and 95066 transitions. [2025-03-03 15:19:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:19:20,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2025-03-03 15:19:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:20,574 INFO L225 Difference]: With dead ends: 60730 [2025-03-03 15:19:20,574 INFO L226 Difference]: Without dead ends: 48768 [2025-03-03 15:19:20,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-03 15:19:20,602 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 574 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:20,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1030 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:19:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48768 states. [2025-03-03 15:19:21,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48768 to 38122. [2025-03-03 15:19:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38122 states, 38121 states have (on average 1.5579864116890954) internal successors, (59392), 38121 states have internal predecessors, (59392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38122 states to 38122 states and 59392 transitions. [2025-03-03 15:19:21,229 INFO L78 Accepts]: Start accepts. Automaton has 38122 states and 59392 transitions. Word has length 97 [2025-03-03 15:19:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:21,229 INFO L471 AbstractCegarLoop]: Abstraction has 38122 states and 59392 transitions. [2025-03-03 15:19:21,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 38122 states and 59392 transitions. [2025-03-03 15:19:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 15:19:21,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:21,231 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:21,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-03 15:19:21,232 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:21,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:21,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1626997204, now seen corresponding path program 1 times [2025-03-03 15:19:21,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:21,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615998986] [2025-03-03 15:19:21,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:21,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:21,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 15:19:21,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 15:19:21,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:21,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 15:19:21,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615998986] [2025-03-03 15:19:21,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615998986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:21,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:21,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:19:21,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71228724] [2025-03-03 15:19:21,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:21,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:19:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:21,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:19:21,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:21,338 INFO L87 Difference]: Start difference. First operand 38122 states and 59392 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:21,718 INFO L93 Difference]: Finished difference Result 68116 states and 106638 transitions. [2025-03-03 15:19:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:19:21,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2025-03-03 15:19:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:21,806 INFO L225 Difference]: With dead ends: 68116 [2025-03-03 15:19:21,807 INFO L226 Difference]: Without dead ends: 56384 [2025-03-03 15:19:21,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-03 15:19:21,819 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 584 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:21,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1090 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:19:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56384 states. [2025-03-03 15:19:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56384 to 51626. [2025-03-03 15:19:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51626 states, 51625 states have (on average 1.5596707021791767) internal successors, (80518), 51625 states have internal predecessors, (80518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51626 states to 51626 states and 80518 transitions. [2025-03-03 15:19:22,395 INFO L78 Accepts]: Start accepts. Automaton has 51626 states and 80518 transitions. Word has length 97 [2025-03-03 15:19:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:22,396 INFO L471 AbstractCegarLoop]: Abstraction has 51626 states and 80518 transitions. [2025-03-03 15:19:22,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 51626 states and 80518 transitions. [2025-03-03 15:19:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 15:19:22,398 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:22,398 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:22,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 15:19:22,398 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:22,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:22,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1990746836, now seen corresponding path program 1 times [2025-03-03 15:19:22,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176880356] [2025-03-03 15:19:22,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:22,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 15:19:22,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 15:19:22,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:22,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 15:19:22,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:22,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176880356] [2025-03-03 15:19:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176880356] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:22,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:22,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:19:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221665284] [2025-03-03 15:19:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:22,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:19:22,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:22,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:19:22,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:19:22,713 INFO L87 Difference]: Start difference. First operand 51626 states and 80518 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:23,135 INFO L93 Difference]: Finished difference Result 72776 states and 113938 transitions. [2025-03-03 15:19:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:19:23,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2025-03-03 15:19:23,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:23,230 INFO L225 Difference]: With dead ends: 72776 [2025-03-03 15:19:23,230 INFO L226 Difference]: Without dead ends: 61044 [2025-03-03 15:19:23,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-03 15:19:23,259 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 584 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:23,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1063 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:19:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61044 states. [2025-03-03 15:19:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61044 to 59150. [2025-03-03 15:19:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59150 states, 59149 states have (on average 1.5613788905983195) internal successors, (92354), 59149 states have internal predecessors, (92354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59150 states to 59150 states and 92354 transitions. [2025-03-03 15:19:23,975 INFO L78 Accepts]: Start accepts. Automaton has 59150 states and 92354 transitions. Word has length 97 [2025-03-03 15:19:23,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:23,975 INFO L471 AbstractCegarLoop]: Abstraction has 59150 states and 92354 transitions. [2025-03-03 15:19:23,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 59150 states and 92354 transitions. [2025-03-03 15:19:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 15:19:23,977 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:23,977 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:23,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 15:19:23,977 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:23,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2061093762, now seen corresponding path program 1 times [2025-03-03 15:19:23,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:23,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950466062] [2025-03-03 15:19:23,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:23,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:23,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 15:19:23,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 15:19:23,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:23,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 15:19:24,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:24,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950466062] [2025-03-03 15:19:24,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950466062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:24,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:24,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:19:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976548207] [2025-03-03 15:19:24,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:24,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:19:24,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:24,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:19:24,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:19:24,063 INFO L87 Difference]: Start difference. First operand 59150 states and 92354 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:24,433 INFO L93 Difference]: Finished difference Result 96273 states and 151013 transitions. [2025-03-03 15:19:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:19:24,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2025-03-03 15:19:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:24,560 INFO L225 Difference]: With dead ends: 96273 [2025-03-03 15:19:24,560 INFO L226 Difference]: Without dead ends: 76695 [2025-03-03 15:19:24,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:19:24,586 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 266 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:24,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 725 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76695 states. [2025-03-03 15:19:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76695 to 74803. [2025-03-03 15:19:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74803 states, 74802 states have (on average 1.5616962113312478) internal successors, (116818), 74802 states have internal predecessors, (116818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74803 states to 74803 states and 116818 transitions. [2025-03-03 15:19:25,531 INFO L78 Accepts]: Start accepts. Automaton has 74803 states and 116818 transitions. Word has length 98 [2025-03-03 15:19:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:25,531 INFO L471 AbstractCegarLoop]: Abstraction has 74803 states and 116818 transitions. [2025-03-03 15:19:25,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 74803 states and 116818 transitions. [2025-03-03 15:19:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 15:19:25,533 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:25,533 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:25,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 15:19:25,533 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:25,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:25,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1416225084, now seen corresponding path program 1 times [2025-03-03 15:19:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:25,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307916753] [2025-03-03 15:19:25,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:25,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 15:19:25,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 15:19:25,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:25,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 15:19:25,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:25,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307916753] [2025-03-03 15:19:25,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307916753] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:25,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:25,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329243138] [2025-03-03 15:19:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:25,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:25,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:25,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:25,586 INFO L87 Difference]: Start difference. First operand 74803 states and 116818 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:26,099 INFO L93 Difference]: Finished difference Result 161245 states and 252601 transitions. [2025-03-03 15:19:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2025-03-03 15:19:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:26,306 INFO L225 Difference]: With dead ends: 161245 [2025-03-03 15:19:26,306 INFO L226 Difference]: Without dead ends: 126183 [2025-03-03 15:19:26,342 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 [2025-03-03 15:19:26,342 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 117 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:26,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 416 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126183 states. [2025-03-03 15:19:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126183 to 125905. [2025-03-03 15:19:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125905 states, 125904 states have (on average 1.5618089973313) internal successors, (196638), 125904 states have internal predecessors, (196638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125905 states to 125905 states and 196638 transitions. [2025-03-03 15:19:28,015 INFO L78 Accepts]: Start accepts. Automaton has 125905 states and 196638 transitions. Word has length 98 [2025-03-03 15:19:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:28,015 INFO L471 AbstractCegarLoop]: Abstraction has 125905 states and 196638 transitions. [2025-03-03 15:19:28,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 125905 states and 196638 transitions. [2025-03-03 15:19:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-03 15:19:28,020 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:28,020 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:28,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 15:19:28,020 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:28,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1668089494, now seen corresponding path program 1 times [2025-03-03 15:19:28,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:28,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138670183] [2025-03-03 15:19:28,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:28,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 15:19:28,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 15:19:28,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:28,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:28,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138670183] [2025-03-03 15:19:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138670183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:28,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:28,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:28,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132422790] [2025-03-03 15:19:28,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:28,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:28,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:28,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:28,090 INFO L87 Difference]: Start difference. First operand 125905 states and 196638 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:29,140 INFO L93 Difference]: Finished difference Result 370546 states and 578060 transitions. [2025-03-03 15:19:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:29,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2025-03-03 15:19:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:29,751 INFO L225 Difference]: With dead ends: 370546 [2025-03-03 15:19:29,751 INFO L226 Difference]: Without dead ends: 244712 [2025-03-03 15:19:29,802 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 [2025-03-03 15:19:29,803 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 153 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:29,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 505 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244712 states. [2025-03-03 15:19:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244712 to 244710. [2025-03-03 15:19:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244710 states, 244709 states have (on average 1.5500451556746992) internal successors, (379310), 244709 states have internal predecessors, (379310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244710 states to 244710 states and 379310 transitions. [2025-03-03 15:19:32,913 INFO L78 Accepts]: Start accepts. Automaton has 244710 states and 379310 transitions. Word has length 99 [2025-03-03 15:19:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:32,914 INFO L471 AbstractCegarLoop]: Abstraction has 244710 states and 379310 transitions. [2025-03-03 15:19:32,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 244710 states and 379310 transitions. [2025-03-03 15:19:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-03 15:19:32,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:32,916 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:32,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 15:19:32,916 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:32,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:32,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1039591562, now seen corresponding path program 1 times [2025-03-03 15:19:32,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:32,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676737669] [2025-03-03 15:19:32,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:32,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 15:19:32,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 15:19:32,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:32,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:19:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:32,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676737669] [2025-03-03 15:19:32,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676737669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:32,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:32,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:19:32,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926954776] [2025-03-03 15:19:32,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:32,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:19:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:32,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:19:32,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:19:32,966 INFO L87 Difference]: Start difference. First operand 244710 states and 379310 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:35,422 INFO L93 Difference]: Finished difference Result 719829 states and 1114291 transitions. [2025-03-03 15:19:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:19:35,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2025-03-03 15:19:35,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:36,295 INFO L225 Difference]: With dead ends: 719829 [2025-03-03 15:19:36,296 INFO L226 Difference]: Without dead ends: 475263 [2025-03-03 15:19:36,413 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 [2025-03-03 15:19:36,414 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 172 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:36,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 543 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:19:36,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475263 states. [2025-03-03 15:19:41,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475263 to 475261. [2025-03-03 15:19:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475261 states, 475260 states have (on average 1.53759415898666) internal successors, (730757), 475260 states have internal predecessors, (730757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475261 states to 475261 states and 730757 transitions. [2025-03-03 15:19:43,155 INFO L78 Accepts]: Start accepts. Automaton has 475261 states and 730757 transitions. Word has length 99 [2025-03-03 15:19:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:19:43,155 INFO L471 AbstractCegarLoop]: Abstraction has 475261 states and 730757 transitions. [2025-03-03 15:19:43,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 475261 states and 730757 transitions. [2025-03-03 15:19:43,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-03 15:19:43,159 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:19:43,159 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:19:43,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 15:19:43,162 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:19:43,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:19:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1787229617, now seen corresponding path program 1 times [2025-03-03 15:19:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:19:43,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036322493] [2025-03-03 15:19:43,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:19:43,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:19:43,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 15:19:43,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 15:19:43,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:19:43,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:19:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 15:19:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:19:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036322493] [2025-03-03 15:19:43,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036322493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:19:43,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:19:43,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:19:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897052609] [2025-03-03 15:19:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:19:43,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:19:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:19:43,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:19:43,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:19:43,277 INFO L87 Difference]: Start difference. First operand 475261 states and 730757 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:19:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:19:45,989 INFO L93 Difference]: Finished difference Result 727419 states and 1122492 transitions. [2025-03-03 15:19:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:19:45,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2025-03-03 15:19:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:19:46,972 INFO L225 Difference]: With dead ends: 727419 [2025-03-03 15:19:46,972 INFO L226 Difference]: Without dead ends: 589897 [2025-03-03 15:19:47,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:19:47,065 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 265 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:19:47,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 728 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:19:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589897 states. [2025-03-03 15:19:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589897 to 561285. [2025-03-03 15:19:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561285 states, 561284 states have (on average 1.5367639198694423) internal successors, (862561), 561284 states have internal predecessors, (862561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)