./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.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_floodmax.3.3.ufo.BOUNDED-6.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 96fefa83b30613ea39cc46bf8d68e79f92b274b671b8c94e773ac8e262712116 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 15:01:07,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 15:01:07,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 15:01:07,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 15:01:07,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 15:01:07,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 15:01:07,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 15:01:07,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 15:01:07,841 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 15:01:07,841 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 15:01:07,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 15:01:07,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 15:01:07,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 15:01:07,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 15:01:07,842 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 15:01:07,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 15:01:07,843 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 15:01:07,844 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 15:01:07,844 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 15:01:07,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 15:01:07,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 15:01:07,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 15:01:07,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:01:07,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 15:01:07,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 15:01:07,845 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 -> 96fefa83b30613ea39cc46bf8d68e79f92b274b671b8c94e773ac8e262712116 [2025-03-03 15:01:08,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 15:01:08,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 15:01:08,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 15:01:08,077 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 15:01:08,077 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 15:01:08,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2025-03-03 15:01:09,235 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63dfefd6/45f4ee4dc80e45e48abc3cc13f67370f/FLAGcb3681122 [2025-03-03 15:01:09,497 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 15:01:09,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2025-03-03 15:01:09,511 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63dfefd6/45f4ee4dc80e45e48abc3cc13f67370f/FLAGcb3681122 [2025-03-03 15:01:09,819 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63dfefd6/45f4ee4dc80e45e48abc3cc13f67370f [2025-03-03 15:01:09,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 15:01:09,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 15:01:09,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 15:01:09,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 15:01:09,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 15:01:09,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:01:09" (1/1) ... [2025-03-03 15:01:09,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573163f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:09, skipping insertion in model container [2025-03-03 15:01:09,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:01:09" (1/1) ... [2025-03-03 15:01:09,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 15:01:09,988 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_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2025-03-03 15:01:10,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:01:10,023 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 15:01:10,052 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_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2025-03-03 15:01:10,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:01:10,089 INFO L204 MainTranslator]: Completed translation [2025-03-03 15:01:10,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10 WrapperNode [2025-03-03 15:01:10,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 15:01:10,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 15:01:10,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 15:01:10,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 15:01:10,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,135 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 633 [2025-03-03 15:01:10,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 15:01:10,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 15:01:10,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 15:01:10,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 15:01:10,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,166 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 15:01:10,166 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,176 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 15:01:10,189 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 15:01:10,189 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 15:01:10,190 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 15:01:10,190 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (1/1) ... [2025-03-03 15:01:10,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:01:10,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:01:10,213 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 15:01:10,215 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 15:01:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 15:01:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 15:01:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 15:01:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 15:01:10,313 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 15:01:10,315 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 15:01:10,823 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L515: havoc main_~node3____CPAchecker_TMP_1~0#1;havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-03 15:01:10,824 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L383: havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2025-03-03 15:01:10,824 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L616: havoc main_~node2____CPAchecker_TMP_1~0#1;havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-03 15:01:10,824 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L717: havoc main_~node1____CPAchecker_TMP_1~0#1;havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-03 15:01:10,824 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L113: 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 15:01:10,855 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2025-03-03 15:01:10,855 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 15:01:10,869 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 15:01:10,869 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 15:01:10,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:01:10 BoogieIcfgContainer [2025-03-03 15:01:10,869 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 15:01:10,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 15:01:10,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 15:01:10,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 15:01:10,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 03:01:09" (1/3) ... [2025-03-03 15:01:10,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2133bae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:01:10, skipping insertion in model container [2025-03-03 15:01:10,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:01:10" (2/3) ... [2025-03-03 15:01:10,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2133bae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:01:10, skipping insertion in model container [2025-03-03 15:01:10,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:01:10" (3/3) ... [2025-03-03 15:01:10,877 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2025-03-03 15:01:10,887 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 15:01:10,890 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c that has 1 procedures, 135 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-03 15:01:10,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 15:01:10,942 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;@5c46d2ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 15:01:10,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 15:01:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 15:01:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-03 15:01:10,950 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:10,950 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] [2025-03-03 15:01:10,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:10,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -436874549, now seen corresponding path program 1 times [2025-03-03 15:01:10,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:10,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139766071] [2025-03-03 15:01:10,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:10,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:11,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-03 15:01:11,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-03 15:01:11,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:11,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:11,389 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 15:01:11,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:11,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139766071] [2025-03-03 15:01:11,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139766071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:11,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:11,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:11,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639290461] [2025-03-03 15:01:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:11,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:11,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:11,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:11,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:11,414 INFO L87 Difference]: Start difference. First operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 15:01:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:11,483 INFO L93 Difference]: Finished difference Result 288 states and 491 transitions. [2025-03-03 15:01:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2025-03-03 15:01:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:11,494 INFO L225 Difference]: With dead ends: 288 [2025-03-03 15:01:11,494 INFO L226 Difference]: Without dead ends: 201 [2025-03-03 15:01:11,496 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 15:01:11,499 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 131 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:11,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 412 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-03 15:01:11,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2025-03-03 15:01:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.5808080808080809) internal successors, (313), 198 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 15:01:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions. [2025-03-03 15:01:11,531 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 57 [2025-03-03 15:01:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:11,531 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 313 transitions. [2025-03-03 15:01:11,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 15:01:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions. [2025-03-03 15:01:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-03 15:01:11,532 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:11,532 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:01:11,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 15:01:11,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:11,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:11,533 INFO L85 PathProgramCache]: Analyzing trace with hash -331784162, now seen corresponding path program 1 times [2025-03-03 15:01:11,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:11,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974808764] [2025-03-03 15:01:11,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:11,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:11,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-03 15:01:11,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-03 15:01:11,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:11,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:11,689 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 15:01:11,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:11,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974808764] [2025-03-03 15:01:11,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974808764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:11,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:11,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:11,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589832423] [2025-03-03 15:01:11,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:11,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:11,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:11,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:11,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:11,691 INFO L87 Difference]: Start difference. First operand 199 states and 313 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:11,730 INFO L93 Difference]: Finished difference Result 475 states and 769 transitions. [2025-03-03 15:01:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:11,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-03-03 15:01:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:11,733 INFO L225 Difference]: With dead ends: 475 [2025-03-03 15:01:11,733 INFO L226 Difference]: Without dead ends: 330 [2025-03-03 15:01:11,734 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 15:01:11,735 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 110 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:11,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 378 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2025-03-03 15:01:11,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2025-03-03 15:01:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.6055045871559632) internal successors, (525), 327 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 15:01:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 525 transitions. [2025-03-03 15:01:11,761 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 525 transitions. Word has length 59 [2025-03-03 15:01:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:11,762 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 525 transitions. [2025-03-03 15:01:11,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:11,762 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 525 transitions. [2025-03-03 15:01:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-03 15:01:11,764 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:11,766 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:01:11,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 15:01:11,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:11,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1994921611, now seen corresponding path program 1 times [2025-03-03 15:01:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:11,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403274182] [2025-03-03 15:01:11,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:11,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:11,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-03 15:01:11,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-03 15:01:11,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:11,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:11,904 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 15:01:11,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403274182] [2025-03-03 15:01:11,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403274182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:11,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:11,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689159583] [2025-03-03 15:01:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:11,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:11,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:11,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:11,905 INFO L87 Difference]: Start difference. First operand 328 states and 525 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:11,925 INFO L93 Difference]: Finished difference Result 848 states and 1379 transitions. [2025-03-03 15:01:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-03 15:01:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:11,928 INFO L225 Difference]: With dead ends: 848 [2025-03-03 15:01:11,929 INFO L226 Difference]: Without dead ends: 574 [2025-03-03 15:01:11,929 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 15:01:11,930 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:11,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 379 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-03 15:01:11,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2025-03-03 15:01:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.6129597197898424) internal successors, (921), 571 states have internal predecessors, (921), 0 states have call successors, (0), 0 states 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 15:01:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 921 transitions. [2025-03-03 15:01:11,956 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 921 transitions. Word has length 61 [2025-03-03 15:01:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:11,956 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 921 transitions. [2025-03-03 15:01:11,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 921 transitions. [2025-03-03 15:01:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-03 15:01:11,957 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:11,957 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 15:01:11,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 15:01:11,958 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:11,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1981246946, now seen corresponding path program 1 times [2025-03-03 15:01:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:11,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487340241] [2025-03-03 15:01:11,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:11,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-03 15:01:11,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-03 15:01:11,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:11,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:12,084 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 15:01:12,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:12,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487340241] [2025-03-03 15:01:12,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487340241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:12,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:12,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:01:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611017398] [2025-03-03 15:01:12,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:12,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:01:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:12,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:01:12,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:01:12,088 INFO L87 Difference]: Start difference. First operand 572 states and 921 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:01:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:12,238 INFO L93 Difference]: Finished difference Result 2452 states and 4047 transitions. [2025-03-03 15:01:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 15:01:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:01:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:12,248 INFO L225 Difference]: With dead ends: 2452 [2025-03-03 15:01:12,249 INFO L226 Difference]: Without dead ends: 1934 [2025-03-03 15:01:12,251 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 15:01:12,251 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 850 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:12,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1219 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:01:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2025-03-03 15:01:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1023. [2025-03-03 15:01:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 1.6252446183953033) internal successors, (1661), 1022 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states 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 15:01:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1661 transitions. [2025-03-03 15:01:12,294 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1661 transitions. Word has length 63 [2025-03-03 15:01:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:12,295 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1661 transitions. [2025-03-03 15:01:12,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:01:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1661 transitions. [2025-03-03 15:01:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-03 15:01:12,297 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:12,297 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 15:01:12,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 15:01:12,297 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:12,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:12,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1287234297, now seen corresponding path program 1 times [2025-03-03 15:01:12,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:12,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004255766] [2025-03-03 15:01:12,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:12,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:12,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-03 15:01:12,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-03 15:01:12,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:12,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:12,429 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 15:01:12,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:12,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004255766] [2025-03-03 15:01:12,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004255766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:12,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:12,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:01:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54444940] [2025-03-03 15:01:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:12,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:01:12,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:12,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:01:12,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:01:12,430 INFO L87 Difference]: Start difference. First operand 1023 states and 1661 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 15:01:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:12,500 INFO L93 Difference]: Finished difference Result 2976 states and 4902 transitions. [2025-03-03 15:01:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:01:12,501 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 15:01:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:12,508 INFO L225 Difference]: With dead ends: 2976 [2025-03-03 15:01:12,508 INFO L226 Difference]: Without dead ends: 2007 [2025-03-03 15:01:12,510 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 15:01:12,511 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 379 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:12,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 597 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2025-03-03 15:01:12,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1506. [2025-03-03 15:01:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6332225913621263) internal successors, (2458), 1505 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states 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 15:01:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2458 transitions. [2025-03-03 15:01:12,555 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2458 transitions. Word has length 64 [2025-03-03 15:01:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:12,556 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2458 transitions. [2025-03-03 15:01:12,556 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 15:01:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2458 transitions. [2025-03-03 15:01:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-03 15:01:12,557 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:12,558 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 15:01:12,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 15:01:12,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:12,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash 191492041, now seen corresponding path program 1 times [2025-03-03 15:01:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742374979] [2025-03-03 15:01:12,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:12,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:12,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-03 15:01:12,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-03 15:01:12,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:12,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:12,661 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 15:01:12,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742374979] [2025-03-03 15:01:12,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742374979] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:12,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:12,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:12,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576933614] [2025-03-03 15:01:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:12,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:12,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:12,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:12,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:12,664 INFO L87 Difference]: Start difference. First operand 1506 states and 2458 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:12,693 INFO L93 Difference]: Finished difference Result 3041 states and 4994 transitions. [2025-03-03 15:01:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:12,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:12,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:12,700 INFO L225 Difference]: With dead ends: 3041 [2025-03-03 15:01:12,701 INFO L226 Difference]: Without dead ends: 2217 [2025-03-03 15:01:12,703 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 15:01:12,705 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 106 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 412 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 15:01:12,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:12,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2025-03-03 15:01:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2215. [2025-03-03 15:01:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2214 states have (on average 1.6287262872628727) internal successors, (3606), 2214 states have internal predecessors, (3606), 0 states have call successors, (0), 0 states 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 15:01:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3606 transitions. [2025-03-03 15:01:12,749 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3606 transitions. Word has length 64 [2025-03-03 15:01:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:12,749 INFO L471 AbstractCegarLoop]: Abstraction has 2215 states and 3606 transitions. [2025-03-03 15:01:12,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3606 transitions. [2025-03-03 15:01:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-03 15:01:12,750 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:12,750 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 15:01:12,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 15:01:12,751 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:12,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash 551175626, now seen corresponding path program 1 times [2025-03-03 15:01:12,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065818645] [2025-03-03 15:01:12,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:12,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:12,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-03 15:01:12,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-03 15:01:12,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:12,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:12,813 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 15:01:12,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065818645] [2025-03-03 15:01:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065818645] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:12,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:12,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:12,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046343790] [2025-03-03 15:01:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:12,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:12,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:12,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:12,815 INFO L87 Difference]: Start difference. First operand 2215 states and 3606 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:12,848 INFO L93 Difference]: Finished difference Result 4157 states and 6812 transitions. [2025-03-03 15:01:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:12,857 INFO L225 Difference]: With dead ends: 4157 [2025-03-03 15:01:12,857 INFO L226 Difference]: Without dead ends: 2979 [2025-03-03 15:01:12,859 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 15:01:12,860 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 111 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 444 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 15:01:12,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 444 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2025-03-03 15:01:12,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2977. [2025-03-03 15:01:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2976 states have (on average 1.6256720430107527) internal successors, (4838), 2976 states have internal predecessors, (4838), 0 states have call successors, (0), 0 states 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 15:01:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4838 transitions. [2025-03-03 15:01:12,917 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4838 transitions. Word has length 64 [2025-03-03 15:01:12,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:12,917 INFO L471 AbstractCegarLoop]: Abstraction has 2977 states and 4838 transitions. [2025-03-03 15:01:12,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4838 transitions. [2025-03-03 15:01:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-03 15:01:12,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:12,918 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 15:01:12,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 15:01:12,918 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:12,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1429750891, now seen corresponding path program 1 times [2025-03-03 15:01:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:12,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100874592] [2025-03-03 15:01:12,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:12,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:12,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-03 15:01:12,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-03 15:01:12,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:12,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:12,992 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 15:01:12,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100874592] [2025-03-03 15:01:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100874592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:12,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239716475] [2025-03-03 15:01:12,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:12,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:12,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:12,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:12,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:12,994 INFO L87 Difference]: Start difference. First operand 2977 states and 4838 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:13,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:13,031 INFO L93 Difference]: Finished difference Result 6399 states and 10550 transitions. [2025-03-03 15:01:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:13,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:13,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:13,046 INFO L225 Difference]: With dead ends: 6399 [2025-03-03 15:01:13,046 INFO L226 Difference]: Without dead ends: 4313 [2025-03-03 15:01:13,050 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 15:01:13,051 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 467 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 15:01:13,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2025-03-03 15:01:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4311. [2025-03-03 15:01:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 4310 states have (on average 1.6331786542923434) internal successors, (7039), 4310 states have internal predecessors, (7039), 0 states have call successors, (0), 0 states 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 15:01:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7039 transitions. [2025-03-03 15:01:13,127 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7039 transitions. Word has length 64 [2025-03-03 15:01:13,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:13,129 INFO L471 AbstractCegarLoop]: Abstraction has 4311 states and 7039 transitions. [2025-03-03 15:01:13,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 15:01:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7039 transitions. [2025-03-03 15:01:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-03 15:01:13,132 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:13,132 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 15:01:13,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 15:01:13,132 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:13,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1247768031, now seen corresponding path program 1 times [2025-03-03 15:01:13,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:13,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76991132] [2025-03-03 15:01:13,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:13,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:13,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-03 15:01:13,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-03 15:01:13,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:13,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:13,213 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 15:01:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:13,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76991132] [2025-03-03 15:01:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76991132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:13,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:01:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403495593] [2025-03-03 15:01:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:13,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:01:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:13,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:01:13,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:01:13,216 INFO L87 Difference]: Start difference. First operand 4311 states and 7039 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 15:01:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:13,355 INFO L93 Difference]: Finished difference Result 13702 states and 22482 transitions. [2025-03-03 15:01:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:01:13,356 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 15:01:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:13,391 INFO L225 Difference]: With dead ends: 13702 [2025-03-03 15:01:13,391 INFO L226 Difference]: Without dead ends: 9473 [2025-03-03 15:01:13,401 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 15:01:13,401 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 377 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 676 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 15:01:13,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 676 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2025-03-03 15:01:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 6863. [2025-03-03 15:01:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6863 states, 6862 states have (on average 1.6264937336053629) internal successors, (11161), 6862 states have internal predecessors, (11161), 0 states have call successors, (0), 0 states 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 15:01:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6863 states to 6863 states and 11161 transitions. [2025-03-03 15:01:13,560 INFO L78 Accepts]: Start accepts. Automaton has 6863 states and 11161 transitions. Word has length 65 [2025-03-03 15:01:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:13,560 INFO L471 AbstractCegarLoop]: Abstraction has 6863 states and 11161 transitions. [2025-03-03 15:01:13,561 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 15:01:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 6863 states and 11161 transitions. [2025-03-03 15:01:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 15:01:13,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:13,564 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 15:01:13,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 15:01:13,564 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:13,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash -24403158, now seen corresponding path program 1 times [2025-03-03 15:01:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:13,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277174561] [2025-03-03 15:01:13,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:13,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 15:01:13,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 15:01:13,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:13,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:13,680 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 15:01:13,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:13,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277174561] [2025-03-03 15:01:13,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277174561] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:13,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:13,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:01:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468901438] [2025-03-03 15:01:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:13,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:01:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:13,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:01:13,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:01:13,681 INFO L87 Difference]: Start difference. First operand 6863 states and 11161 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 15:01:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:13,819 INFO L93 Difference]: Finished difference Result 21434 states and 34994 transitions. [2025-03-03 15:01:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:01:13,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 15:01:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:13,848 INFO L225 Difference]: With dead ends: 21434 [2025-03-03 15:01:13,848 INFO L226 Difference]: Without dead ends: 14653 [2025-03-03 15:01:13,861 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 15:01:13,862 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 375 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 679 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 15:01:13,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 679 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:01:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14653 states. [2025-03-03 15:01:14,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 10715. [2025-03-03 15:01:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 10714 states have (on average 1.6190965092402465) internal successors, (17347), 10714 states have internal predecessors, (17347), 0 states have call successors, (0), 0 states 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 15:01:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 17347 transitions. [2025-03-03 15:01:14,103 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 17347 transitions. Word has length 66 [2025-03-03 15:01:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:14,104 INFO L471 AbstractCegarLoop]: Abstraction has 10715 states and 17347 transitions. [2025-03-03 15:01:14,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 15:01:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 17347 transitions. [2025-03-03 15:01:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 15:01:14,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:14,104 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] [2025-03-03 15:01:14,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 15:01:14,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:14,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1925113428, now seen corresponding path program 1 times [2025-03-03 15:01:14,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:14,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69212088] [2025-03-03 15:01:14,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:14,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:14,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 15:01:14,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 15:01:14,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:14,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:14,270 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 15:01:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69212088] [2025-03-03 15:01:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69212088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:14,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:01:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861294846] [2025-03-03 15:01:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:14,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:01:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:14,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:01:14,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:01:14,272 INFO L87 Difference]: Start difference. First operand 10715 states and 17347 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 15:01:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:14,406 INFO L93 Difference]: Finished difference Result 21350 states and 34583 transitions. [2025-03-03 15:01:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:01:14,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-03 15:01:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:14,426 INFO L225 Difference]: With dead ends: 21350 [2025-03-03 15:01:14,426 INFO L226 Difference]: Without dead ends: 10717 [2025-03-03 15:01:14,439 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 15:01:14,440 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 105 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:14,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 729 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:01:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10717 states. [2025-03-03 15:01:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10717 to 10715. [2025-03-03 15:01:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 10714 states have (on average 1.607429531454172) internal successors, (17222), 10714 states have internal predecessors, (17222), 0 states have call successors, (0), 0 states 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 15:01:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 17222 transitions. [2025-03-03 15:01:14,617 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 17222 transitions. Word has length 68 [2025-03-03 15:01:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:14,617 INFO L471 AbstractCegarLoop]: Abstraction has 10715 states and 17222 transitions. [2025-03-03 15:01:14,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 15:01:14,617 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 17222 transitions. [2025-03-03 15:01:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 15:01:14,618 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:14,618 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 15:01:14,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 15:01:14,618 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:14,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:14,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1031757195, now seen corresponding path program 1 times [2025-03-03 15:01:14,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:14,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553774316] [2025-03-03 15:01:14,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:14,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:14,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 15:01:14,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 15:01:14,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:14,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:14,800 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 15:01:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:14,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553774316] [2025-03-03 15:01:14,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553774316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:14,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:14,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:01:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737938408] [2025-03-03 15:01:14,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:14,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:01:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:14,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:01:14,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:01:14,801 INFO L87 Difference]: Start difference. First operand 10715 states and 17222 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 15:01:14,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:14,929 INFO L93 Difference]: Finished difference Result 30660 states and 49437 transitions. [2025-03-03 15:01:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:01:14,930 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 15:01:14,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:14,963 INFO L225 Difference]: With dead ends: 30660 [2025-03-03 15:01:14,963 INFO L226 Difference]: Without dead ends: 20027 [2025-03-03 15:01:14,977 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 15:01:14,978 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 205 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:14,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 559 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20027 states. [2025-03-03 15:01:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20027 to 20025. [2025-03-03 15:01:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20025 states, 20024 states have (on average 1.5949360767079506) internal successors, (31937), 20024 states have internal predecessors, (31937), 0 states have call successors, (0), 0 states 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 15:01:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20025 states to 20025 states and 31937 transitions. [2025-03-03 15:01:15,249 INFO L78 Accepts]: Start accepts. Automaton has 20025 states and 31937 transitions. Word has length 71 [2025-03-03 15:01:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:15,249 INFO L471 AbstractCegarLoop]: Abstraction has 20025 states and 31937 transitions. [2025-03-03 15:01:15,249 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 15:01:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 20025 states and 31937 transitions. [2025-03-03 15:01:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-03 15:01:15,249 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:15,250 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:01:15,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 15:01:15,250 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:15,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1920657337, now seen corresponding path program 1 times [2025-03-03 15:01:15,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:15,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021030903] [2025-03-03 15:01:15,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:15,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-03 15:01:15,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 15:01:15,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:15,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:15,523 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 15:01:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021030903] [2025-03-03 15:01:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021030903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:01:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449169135] [2025-03-03 15:01:15,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:15,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:01:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:15,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:01:15,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:01:15,524 INFO L87 Difference]: Start difference. First operand 20025 states and 31937 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 15:01:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:15,591 INFO L93 Difference]: Finished difference Result 20751 states and 33024 transitions. [2025-03-03 15:01:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:01:15,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2025-03-03 15:01:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:15,626 INFO L225 Difference]: With dead ends: 20751 [2025-03-03 15:01:15,626 INFO L226 Difference]: Without dead ends: 20749 [2025-03-03 15:01:15,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:01:15,635 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:15,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 787 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20749 states. [2025-03-03 15:01:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20749 to 20749. [2025-03-03 15:01:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20749 states, 20748 states have (on average 1.573742047426258) internal successors, (32652), 20748 states have internal predecessors, (32652), 0 states have call successors, (0), 0 states 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 15:01:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20749 states to 20749 states and 32652 transitions. [2025-03-03 15:01:15,971 INFO L78 Accepts]: Start accepts. Automaton has 20749 states and 32652 transitions. Word has length 72 [2025-03-03 15:01:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:15,971 INFO L471 AbstractCegarLoop]: Abstraction has 20749 states and 32652 transitions. [2025-03-03 15:01:15,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 15:01:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 20749 states and 32652 transitions. [2025-03-03 15:01:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-03 15:01:15,973 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:15,973 INFO L218 NwaCegarLoop]: trace histogram [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 15:01:15,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 15:01:15,973 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:15,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1307908251, now seen corresponding path program 1 times [2025-03-03 15:01:15,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:15,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636423698] [2025-03-03 15:01:15,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:15,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:15,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 15:01:15,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 15:01:15,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:15,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 15:01:16,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:16,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636423698] [2025-03-03 15:01:16,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636423698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:16,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:16,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:01:16,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740713280] [2025-03-03 15:01:16,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:16,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:01:16,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:16,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:01:16,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:01:16,096 INFO L87 Difference]: Start difference. First operand 20749 states and 32652 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:16,298 INFO L93 Difference]: Finished difference Result 50557 states and 79854 transitions. [2025-03-03 15:01:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:01:16,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-03-03 15:01:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:16,384 INFO L225 Difference]: With dead ends: 50557 [2025-03-03 15:01:16,385 INFO L226 Difference]: Without dead ends: 40765 [2025-03-03 15:01:16,410 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 15:01:16,410 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 484 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:16,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 923 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:01:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40765 states. [2025-03-03 15:01:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40765 to 31835. [2025-03-03 15:01:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31835 states, 31834 states have (on average 1.572532512408117) internal successors, (50060), 31834 states have internal predecessors, (50060), 0 states have call successors, (0), 0 states 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 15:01:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31835 states to 31835 states and 50060 transitions. [2025-03-03 15:01:16,903 INFO L78 Accepts]: Start accepts. Automaton has 31835 states and 50060 transitions. Word has length 93 [2025-03-03 15:01:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:16,904 INFO L471 AbstractCegarLoop]: Abstraction has 31835 states and 50060 transitions. [2025-03-03 15:01:16,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 31835 states and 50060 transitions. [2025-03-03 15:01:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-03 15:01:16,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:16,906 INFO L218 NwaCegarLoop]: trace histogram [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 15:01:16,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-03 15:01:16,906 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:16,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash -948224666, now seen corresponding path program 1 times [2025-03-03 15:01:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:16,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37898661] [2025-03-03 15:01:16,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:16,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 15:01:16,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 15:01:16,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:16,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-03 15:01:17,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:17,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37898661] [2025-03-03 15:01:17,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37898661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:17,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:17,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:01:17,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648483873] [2025-03-03 15:01:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:17,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:01:17,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:17,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:01:17,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:01:17,120 INFO L87 Difference]: Start difference. First operand 31835 states and 50060 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:17,295 INFO L93 Difference]: Finished difference Result 54449 states and 86018 transitions. [2025-03-03 15:01:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:01:17,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-03-03 15:01:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:17,369 INFO L225 Difference]: With dead ends: 54449 [2025-03-03 15:01:17,369 INFO L226 Difference]: Without dead ends: 44657 [2025-03-03 15:01:17,390 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 15:01:17,391 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 482 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:17,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 912 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44657 states. [2025-03-03 15:01:17,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44657 to 43067. [2025-03-03 15:01:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43067 states, 43066 states have (on average 1.573445409371662) internal successors, (67762), 43066 states have internal predecessors, (67762), 0 states have call successors, (0), 0 states 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 15:01:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43067 states to 43067 states and 67762 transitions. [2025-03-03 15:01:18,010 INFO L78 Accepts]: Start accepts. Automaton has 43067 states and 67762 transitions. Word has length 93 [2025-03-03 15:01:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:18,011 INFO L471 AbstractCegarLoop]: Abstraction has 43067 states and 67762 transitions. [2025-03-03 15:01:18,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 43067 states and 67762 transitions. [2025-03-03 15:01:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-03 15:01:18,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:18,013 INFO L218 NwaCegarLoop]: trace histogram [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 15:01:18,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 15:01:18,014 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:18,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -69649401, now seen corresponding path program 1 times [2025-03-03 15:01:18,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:18,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514539667] [2025-03-03 15:01:18,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:18,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:18,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 15:01:18,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 15:01:18,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:18,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 15:01:18,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:18,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514539667] [2025-03-03 15:01:18,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514539667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:18,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436099523] [2025-03-03 15:01:18,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:18,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:18,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:18,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:18,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:18,130 INFO L87 Difference]: Start difference. First operand 43067 states and 67762 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:18,332 INFO L93 Difference]: Finished difference Result 89605 states and 141689 transitions. [2025-03-03 15:01:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-03-03 15:01:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:18,453 INFO L225 Difference]: With dead ends: 89605 [2025-03-03 15:01:18,454 INFO L226 Difference]: Without dead ends: 79583 [2025-03-03 15:01:18,485 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 15:01:18,485 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 96 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 370 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 15:01:18,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 370 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79583 states. [2025-03-03 15:01:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79583 to 79466. [2025-03-03 15:01:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79466 states, 79465 states have (on average 1.5773233499024728) internal successors, (125342), 79465 states have internal predecessors, (125342), 0 states have call successors, (0), 0 states 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 15:01:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79466 states to 79466 states and 125342 transitions. [2025-03-03 15:01:19,569 INFO L78 Accepts]: Start accepts. Automaton has 79466 states and 125342 transitions. Word has length 93 [2025-03-03 15:01:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:19,569 INFO L471 AbstractCegarLoop]: Abstraction has 79466 states and 125342 transitions. [2025-03-03 15:01:19,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 79466 states and 125342 transitions. [2025-03-03 15:01:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 15:01:19,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:19,571 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:01:19,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 15:01:19,572 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:19,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2144555647, now seen corresponding path program 1 times [2025-03-03 15:01:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:19,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317296041] [2025-03-03 15:01:19,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:19,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:19,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 15:01:19,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 15:01:19,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:19,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:01:19,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:19,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317296041] [2025-03-03 15:01:19,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317296041] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:19,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:19,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:19,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340082106] [2025-03-03 15:01:19,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:19,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:19,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:19,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:19,661 INFO L87 Difference]: Start difference. First operand 79466 states and 125342 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 15:01:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:20,006 INFO L93 Difference]: Finished difference Result 152410 states and 240883 transitions. [2025-03-03 15:01:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:20,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-03 15:01:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:20,152 INFO L225 Difference]: With dead ends: 152410 [2025-03-03 15:01:20,152 INFO L226 Difference]: Without dead ends: 73026 [2025-03-03 15:01:20,214 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 15:01:20,215 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:20,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 433 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73026 states. [2025-03-03 15:01:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73026 to 73020. [2025-03-03 15:01:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73020 states, 73019 states have (on average 1.5737410810884838) internal successors, (114913), 73019 states have internal predecessors, (114913), 0 states have call successors, (0), 0 states 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 15:01:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73020 states to 73020 states and 114913 transitions. [2025-03-03 15:01:21,342 INFO L78 Accepts]: Start accepts. Automaton has 73020 states and 114913 transitions. Word has length 94 [2025-03-03 15:01:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:21,342 INFO L471 AbstractCegarLoop]: Abstraction has 73020 states and 114913 transitions. [2025-03-03 15:01:21,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 15:01:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 73020 states and 114913 transitions. [2025-03-03 15:01:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 15:01:21,347 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:21,347 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2025-03-03 15:01:21,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 15:01:21,348 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:21,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1736402815, now seen corresponding path program 1 times [2025-03-03 15:01:21,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:21,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869611654] [2025-03-03 15:01:21,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:21,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 15:01:21,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 15:01:21,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:21,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:01:21,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:21,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869611654] [2025-03-03 15:01:21,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869611654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:21,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:21,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325799348] [2025-03-03 15:01:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:21,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:21,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:21,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:21,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:21,411 INFO L87 Difference]: Start difference. First operand 73020 states and 114913 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 15:01:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:22,287 INFO L93 Difference]: Finished difference Result 214870 states and 338093 transitions. [2025-03-03 15:01:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:22,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-03 15:01:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:22,538 INFO L225 Difference]: With dead ends: 214870 [2025-03-03 15:01:22,539 INFO L226 Difference]: Without dead ends: 141921 [2025-03-03 15:01:22,582 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 15:01:22,583 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 135 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 457 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 15:01:22,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 457 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141921 states. [2025-03-03 15:01:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141921 to 141919. [2025-03-03 15:01:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141919 states, 141918 states have (on average 1.5621697036316746) internal successors, (221700), 141918 states have internal predecessors, (221700), 0 states have call successors, (0), 0 states 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 15:01:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141919 states to 141919 states and 221700 transitions. [2025-03-03 15:01:24,498 INFO L78 Accepts]: Start accepts. Automaton has 141919 states and 221700 transitions. Word has length 94 [2025-03-03 15:01:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:24,498 INFO L471 AbstractCegarLoop]: Abstraction has 141919 states and 221700 transitions. [2025-03-03 15:01:24,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 15:01:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 141919 states and 221700 transitions. [2025-03-03 15:01:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 15:01:24,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:24,501 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2025-03-03 15:01:24,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 15:01:24,502 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:24,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:24,502 INFO L85 PathProgramCache]: Analyzing trace with hash -159836255, now seen corresponding path program 1 times [2025-03-03 15:01:24,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:24,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526504145] [2025-03-03 15:01:24,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:24,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 15:01:24,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 15:01:24,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:24,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:01:24,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:24,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526504145] [2025-03-03 15:01:24,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526504145] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:24,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:24,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:01:24,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030726264] [2025-03-03 15:01:24,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:24,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:01:24,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:24,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:01:24,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:01:24,596 INFO L87 Difference]: Start difference. First operand 141919 states and 221700 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 15:01:25,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:25,973 INFO L93 Difference]: Finished difference Result 417405 states and 651863 transitions. [2025-03-03 15:01:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:01:25,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-03 15:01:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:26,451 INFO L225 Difference]: With dead ends: 417405 [2025-03-03 15:01:26,451 INFO L226 Difference]: Without dead ends: 275629 [2025-03-03 15:01:26,572 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 15:01:26,572 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 153 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 490 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 15:01:26,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 490 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275629 states. [2025-03-03 15:01:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275629 to 275627. [2025-03-03 15:01:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275627 states, 275626 states have (on average 1.5499227213688114) internal successors, (427199), 275626 states have internal predecessors, (427199), 0 states have call successors, (0), 0 states 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 15:01:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275627 states to 275627 states and 427199 transitions. [2025-03-03 15:01:30,750 INFO L78 Accepts]: Start accepts. Automaton has 275627 states and 427199 transitions. Word has length 94 [2025-03-03 15:01:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:30,750 INFO L471 AbstractCegarLoop]: Abstraction has 275627 states and 427199 transitions. [2025-03-03 15:01:30,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 15:01:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand 275627 states and 427199 transitions. [2025-03-03 15:01:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 15:01:30,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:30,757 INFO L218 NwaCegarLoop]: trace histogram [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 15:01:30,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 15:01:30,762 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:30,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash -163107840, now seen corresponding path program 1 times [2025-03-03 15:01:30,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:30,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396272492] [2025-03-03 15:01:30,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:30,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:30,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 15:01:30,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 15:01:30,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:30,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 15:01:30,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:30,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396272492] [2025-03-03 15:01:30,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396272492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:30,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:30,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:01:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434193377] [2025-03-03 15:01:30,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:30,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:01:30,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:30,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:01:30,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:01:30,852 INFO L87 Difference]: Start difference. First operand 275627 states and 427199 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:32,553 INFO L93 Difference]: Finished difference Result 461581 states and 717274 transitions. [2025-03-03 15:01:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:01:32,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-03 15:01:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:33,065 INFO L225 Difference]: With dead ends: 461581 [2025-03-03 15:01:33,065 INFO L226 Difference]: Without dead ends: 288471 [2025-03-03 15:01:33,197 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 15:01:33,197 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 212 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:33,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 684 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288471 states. [2025-03-03 15:01:35,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288471 to 185459. [2025-03-03 15:01:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185459 states, 185458 states have (on average 1.5463932534590041) internal successors, (286791), 185458 states have internal predecessors, (286791), 0 states have call successors, (0), 0 states 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 15:01:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185459 states to 185459 states and 286791 transitions. [2025-03-03 15:01:36,258 INFO L78 Accepts]: Start accepts. Automaton has 185459 states and 286791 transitions. Word has length 94 [2025-03-03 15:01:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:36,258 INFO L471 AbstractCegarLoop]: Abstraction has 185459 states and 286791 transitions. [2025-03-03 15:01:36,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 185459 states and 286791 transitions. [2025-03-03 15:01:36,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 15:01:36,261 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:36,261 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:01:36,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 15:01:36,261 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:36,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:36,262 INFO L85 PathProgramCache]: Analyzing trace with hash -791554913, now seen corresponding path program 1 times [2025-03-03 15:01:36,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:36,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529617526] [2025-03-03 15:01:36,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:36,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:36,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 15:01:36,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 15:01:36,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:36,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 15:01:36,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:36,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529617526] [2025-03-03 15:01:36,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529617526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:36,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:36,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:01:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54096325] [2025-03-03 15:01:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:36,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:01:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:36,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:01:36,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:01:36,863 INFO L87 Difference]: Start difference. First operand 185459 states and 286791 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:38,793 INFO L93 Difference]: Finished difference Result 422005 states and 656878 transitions. [2025-03-03 15:01:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 15:01:38,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-03 15:01:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:39,292 INFO L225 Difference]: With dead ends: 422005 [2025-03-03 15:01:39,292 INFO L226 Difference]: Without dead ends: 322843 [2025-03-03 15:01:39,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 15:01:39,341 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 417 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:01:39,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 537 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322843 states. [2025-03-03 15:01:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322843 to 280123. [2025-03-03 15:01:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280123 states, 280122 states have (on average 1.550063900728968) internal successors, (434207), 280122 states have internal predecessors, (434207), 0 states have call successors, (0), 0 states 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 15:01:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280123 states to 280123 states and 434207 transitions. [2025-03-03 15:01:42,882 INFO L78 Accepts]: Start accepts. Automaton has 280123 states and 434207 transitions. Word has length 94 [2025-03-03 15:01:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:01:42,882 INFO L471 AbstractCegarLoop]: Abstraction has 280123 states and 434207 transitions. [2025-03-03 15:01:42,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:01:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 280123 states and 434207 transitions. [2025-03-03 15:01:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-03 15:01:42,886 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:01:42,887 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:01:42,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 15:01:42,887 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:01:42,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:01:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 770001953, now seen corresponding path program 1 times [2025-03-03 15:01:42,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:01:42,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127667967] [2025-03-03 15:01:42,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:01:42,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:01:42,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 15:01:42,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 15:01:42,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:01:42,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:01:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 15:01:43,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:01:43,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127667967] [2025-03-03 15:01:43,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127667967] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:01:43,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:01:43,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:01:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866869937] [2025-03-03 15:01:43,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:01:43,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:01:43,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:43,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:01:43,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:01:43,023 INFO L87 Difference]: Start difference. First operand 280123 states and 434207 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 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 15:01:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:01:44,812 INFO L93 Difference]: Finished difference Result 494065 states and 770754 transitions. [2025-03-03 15:01:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:01:44,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 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 96 [2025-03-03 15:01:44,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:01:45,457 INFO L225 Difference]: With dead ends: 494065 [2025-03-03 15:01:45,458 INFO L226 Difference]: Without dead ends: 387535 [2025-03-03 15:01:45,609 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 15:01:45,612 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 217 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 634 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 15:01:45,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 634 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:01:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387535 states. [2025-03-03 15:01:49,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387535 to 345515. [2025-03-03 15:01:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345515 states, 345514 states have (on average 1.5495725209398172) internal successors, (535399), 345514 states have internal predecessors, (535399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)