./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b178b656343d0e2ffc6b5c87d592ef5d1e640f986fa3fd9fab639777f6d58eb8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:27:53,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:27:53,501 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:27:53,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:27:53,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:27:53,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:27:53,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:27:53,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:27:53,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:27:53,538 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:27:53,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:27:53,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:27:53,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:27:53,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:27:53,542 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:27:53,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:27:53,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:27:53,542 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:27:53,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:27:53,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:27:53,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:27:53,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:27:53,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:27:53,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:27:53,545 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:27:53,545 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:27:53,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:27:53,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:27:53,546 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:27:53,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:27:53,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:27:53,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:27:53,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:27:53,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:27:53,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:27:53,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:27:53,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:27:53,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:27:53,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:27:53,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:27:53,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:27:53,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:27:53,551 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b178b656343d0e2ffc6b5c87d592ef5d1e640f986fa3fd9fab639777f6d58eb8 [2024-11-16 08:27:53,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:27:53,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:27:53,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:27:53,790 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:27:53,791 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:27:53,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:27:55,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:27:55,370 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:27:55,371 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:27:55,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bedd48e/70c1a31b3e854814a22dfdf2c733d473/FLAG831b804b0 [2024-11-16 08:27:55,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bedd48e/70c1a31b3e854814a22dfdf2c733d473 [2024-11-16 08:27:55,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:27:55,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:27:55,400 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:27:55,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:27:55,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:27:55,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fff28fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55, skipping insertion in model container [2024-11-16 08:27:55,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:27:55,721 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.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7349,7362] [2024-11-16 08:27:55,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:27:55,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:27:55,803 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.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7349,7362] [2024-11-16 08:27:55,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:27:55,837 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:27:55,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55 WrapperNode [2024-11-16 08:27:55,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:27:55,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:27:55,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:27:55,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:27:55,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,890 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 634 [2024-11-16 08:27:55,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:27:55,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:27:55,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:27:55,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:27:55,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,917 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]. [2024-11-16 08:27:55,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,925 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,926 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:27:55,933 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:27:55,933 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:27:55,933 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:27:55,934 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (1/1) ... [2024-11-16 08:27:55,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:27:55,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:27:55,961 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) [2024-11-16 08:27:55,963 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 [2024-11-16 08:27:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:27:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:27:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:27:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:27:56,107 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:27:56,109 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:27:56,604 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L382: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-16 08:27:56,606 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L634: havoc main_~node2____CPAchecker_TMP_1~0#1;havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-16 08:27:56,606 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L740: havoc main_~node1____CPAchecker_TMP_1~0#1;havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-16 08:27:56,606 INFO L1250 $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; [2024-11-16 08:27:56,606 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L528: havoc main_~node3____CPAchecker_TMP_1~0#1;havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-16 08:27:56,644 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-16 08:27:56,644 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:27:56,658 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:27:56,658 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:27:56,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:27:56 BoogieIcfgContainer [2024-11-16 08:27:56,659 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:27:56,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:27:56,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:27:56,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:27:56,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:27:55" (1/3) ... [2024-11-16 08:27:56,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170c5e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:27:56, skipping insertion in model container [2024-11-16 08:27:56,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:27:55" (2/3) ... [2024-11-16 08:27:56,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170c5e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:27:56, skipping insertion in model container [2024-11-16 08:27:56,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:27:56" (3/3) ... [2024-11-16 08:27:56,668 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:27:56,680 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:27:56,680 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:27:56,738 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:27:56,746 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;@6d49d884, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:27:56,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:27:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 167 states have (on average 1.6287425149700598) internal successors, (272), 168 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 08:27:56,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:56,762 INFO L215 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] [2024-11-16 08:27:56,762 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:56,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash -565951824, now seen corresponding path program 1 times [2024-11-16 08:27:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670969538] [2024-11-16 08:27:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:57,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:57,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670969538] [2024-11-16 08:27:57,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670969538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:57,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:57,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:27:57,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832699979] [2024-11-16 08:27:57,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:57,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:27:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:27:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:27:57,311 INFO L87 Difference]: Start difference. First operand has 169 states, 167 states have (on average 1.6287425149700598) internal successors, (272), 168 states have internal predecessors, (272), 0 states have call successors, (0), 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 19.666666666666668) 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) [2024-11-16 08:27:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:57,410 INFO L93 Difference]: Finished difference Result 363 states and 566 transitions. [2024-11-16 08:27:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:27:57,415 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 [2024-11-16 08:27:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:57,425 INFO L225 Difference]: With dead ends: 363 [2024-11-16 08:27:57,427 INFO L226 Difference]: Without dead ends: 248 [2024-11-16 08:27:57,430 INFO L431 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 [2024-11-16 08:27:57,434 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 157 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:27:57,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 458 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:27:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-16 08:27:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 245. [2024-11-16 08:27:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4672131147540983) internal successors, (358), 244 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 358 transitions. [2024-11-16 08:27:57,484 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 358 transitions. Word has length 59 [2024-11-16 08:27:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:57,485 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 358 transitions. [2024-11-16 08:27:57,485 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) [2024-11-16 08:27:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 358 transitions. [2024-11-16 08:27:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 08:27:57,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:57,488 INFO L215 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] [2024-11-16 08:27:57,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:27:57,488 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:57,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash -148218366, now seen corresponding path program 1 times [2024-11-16 08:27:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:57,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846797746] [2024-11-16 08:27:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:57,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:57,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846797746] [2024-11-16 08:27:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846797746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:57,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:57,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:27:57,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257935123] [2024-11-16 08:27:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:57,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:27:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:27:57,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:27:57,669 INFO L87 Difference]: Start difference. First operand 245 states and 358 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:57,704 INFO L93 Difference]: Finished difference Result 597 states and 888 transitions. [2024-11-16 08:27:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:27:57,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-16 08:27:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:57,707 INFO L225 Difference]: With dead ends: 597 [2024-11-16 08:27:57,708 INFO L226 Difference]: Without dead ends: 412 [2024-11-16 08:27:57,709 INFO L431 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 [2024-11-16 08:27:57,710 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 135 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:27:57,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 447 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:27:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-16 08:27:57,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 408. [2024-11-16 08:27:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.4766584766584767) internal successors, (601), 407 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 601 transitions. [2024-11-16 08:27:57,732 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 601 transitions. Word has length 62 [2024-11-16 08:27:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:57,732 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 601 transitions. [2024-11-16 08:27:57,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 601 transitions. [2024-11-16 08:27:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 08:27:57,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:57,735 INFO L215 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] [2024-11-16 08:27:57,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:27:57,736 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:57,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:57,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1554783629, now seen corresponding path program 1 times [2024-11-16 08:27:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:57,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487764726] [2024-11-16 08:27:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:57,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:57,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487764726] [2024-11-16 08:27:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487764726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:57,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:57,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:27:57,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39566414] [2024-11-16 08:27:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:57,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:27:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:27:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:27:57,907 INFO L87 Difference]: Start difference. First operand 408 states and 601 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-16 08:27:57,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:57,951 INFO L93 Difference]: Finished difference Result 1068 states and 1587 transitions. [2024-11-16 08:27:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:27:57,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 [2024-11-16 08:27:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:57,956 INFO L225 Difference]: With dead ends: 1068 [2024-11-16 08:27:57,956 INFO L226 Difference]: Without dead ends: 720 [2024-11-16 08:27:57,957 INFO L431 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 [2024-11-16 08:27:57,958 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 128 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:27:57,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:27:57,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-16 08:27:57,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 714. [2024-11-16 08:27:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 1.4740532959326789) internal successors, (1051), 713 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1051 transitions. [2024-11-16 08:27:58,000 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1051 transitions. Word has length 65 [2024-11-16 08:27:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:58,000 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1051 transitions. [2024-11-16 08:27:58,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-16 08:27:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1051 transitions. [2024-11-16 08:27:58,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:27:58,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:58,003 INFO L215 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] [2024-11-16 08:27:58,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:27:58,003 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:58,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1663668507, now seen corresponding path program 1 times [2024-11-16 08:27:58,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:58,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600618235] [2024-11-16 08:27:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:58,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:58,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600618235] [2024-11-16 08:27:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600618235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:58,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:58,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:27:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79547182] [2024-11-16 08:27:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:58,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:27:58,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:27:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:27:58,146 INFO L87 Difference]: Start difference. First operand 714 states and 1051 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) [2024-11-16 08:27:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:58,298 INFO L93 Difference]: Finished difference Result 3640 states and 5451 transitions. [2024-11-16 08:27:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 08:27:58,299 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 [2024-11-16 08:27:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:58,308 INFO L225 Difference]: With dead ends: 3640 [2024-11-16 08:27:58,308 INFO L226 Difference]: Without dead ends: 2986 [2024-11-16 08:27:58,312 INFO L431 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 [2024-11-16 08:27:58,313 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 1047 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:27:58,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1658 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:27:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2024-11-16 08:27:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1326. [2024-11-16 08:27:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1325 states have (on average 1.4845283018867925) internal successors, (1967), 1325 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1967 transitions. [2024-11-16 08:27:58,343 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1967 transitions. Word has length 68 [2024-11-16 08:27:58,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:58,344 INFO L471 AbstractCegarLoop]: Abstraction has 1326 states and 1967 transitions. [2024-11-16 08:27:58,344 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) [2024-11-16 08:27:58,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1967 transitions. [2024-11-16 08:27:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 08:27:58,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:58,347 INFO L215 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] [2024-11-16 08:27:58,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:27:58,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:58,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash -990090579, now seen corresponding path program 1 times [2024-11-16 08:27:58,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:58,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58441997] [2024-11-16 08:27:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:58,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:58,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58441997] [2024-11-16 08:27:58,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58441997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:58,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:58,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 08:27:58,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017633659] [2024-11-16 08:27:58,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:58,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 08:27:58,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 08:27:58,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 08:27:58,497 INFO L87 Difference]: Start difference. First operand 1326 states and 1967 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:58,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:58,572 INFO L93 Difference]: Finished difference Result 4858 states and 7242 transitions. [2024-11-16 08:27:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 08:27:58,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 08:27:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:58,582 INFO L225 Difference]: With dead ends: 4858 [2024-11-16 08:27:58,582 INFO L226 Difference]: Without dead ends: 3592 [2024-11-16 08:27:58,583 INFO L431 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 [2024-11-16 08:27:58,586 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 462 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 826 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 [2024-11-16 08:27:58,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 826 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:27:58,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2024-11-16 08:27:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 2450. [2024-11-16 08:27:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2449 states have (on average 1.4826459779501837) internal successors, (3631), 2449 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3631 transitions. [2024-11-16 08:27:58,630 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3631 transitions. Word has length 70 [2024-11-16 08:27:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:58,630 INFO L471 AbstractCegarLoop]: Abstraction has 2450 states and 3631 transitions. [2024-11-16 08:27:58,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3631 transitions. [2024-11-16 08:27:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:27:58,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:58,632 INFO L215 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] [2024-11-16 08:27:58,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:27:58,633 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:58,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1222705968, now seen corresponding path program 1 times [2024-11-16 08:27:58,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421240338] [2024-11-16 08:27:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:58,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:58,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421240338] [2024-11-16 08:27:58,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421240338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:58,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:58,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:27:58,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006406665] [2024-11-16 08:27:58,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:58,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:27:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:27:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:27:58,700 INFO L87 Difference]: Start difference. First operand 2450 states and 3631 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2024-11-16 08:27:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:58,730 INFO L93 Difference]: Finished difference Result 5889 states and 8758 transitions. [2024-11-16 08:27:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:27:58,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 [2024-11-16 08:27:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:58,739 INFO L225 Difference]: With dead ends: 5889 [2024-11-16 08:27:58,739 INFO L226 Difference]: Without dead ends: 3499 [2024-11-16 08:27:58,742 INFO L431 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 [2024-11-16 08:27:58,743 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 141 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 562 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 [2024-11-16 08:27:58,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 562 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:27:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2024-11-16 08:27:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 3497. [2024-11-16 08:27:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 3496 states have (on average 1.4839816933638443) internal successors, (5188), 3496 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 5188 transitions. [2024-11-16 08:27:58,791 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 5188 transitions. Word has length 72 [2024-11-16 08:27:58,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:58,791 INFO L471 AbstractCegarLoop]: Abstraction has 3497 states and 5188 transitions. [2024-11-16 08:27:58,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2024-11-16 08:27:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 5188 transitions. [2024-11-16 08:27:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:27:58,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:58,792 INFO L215 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] [2024-11-16 08:27:58,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:27:58,793 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:58,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:58,793 INFO L85 PathProgramCache]: Analyzing trace with hash 743623280, now seen corresponding path program 1 times [2024-11-16 08:27:58,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:58,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140126677] [2024-11-16 08:27:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:58,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:58,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140126677] [2024-11-16 08:27:58,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140126677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:58,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:58,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:27:58,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824866366] [2024-11-16 08:27:58,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:58,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:27:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:58,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:27:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:27:58,881 INFO L87 Difference]: Start difference. First operand 3497 states and 5188 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2024-11-16 08:27:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:58,932 INFO L93 Difference]: Finished difference Result 6838 states and 10165 transitions. [2024-11-16 08:27:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:27:58,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 [2024-11-16 08:27:58,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:58,947 INFO L225 Difference]: With dead ends: 6838 [2024-11-16 08:27:58,947 INFO L226 Difference]: Without dead ends: 4901 [2024-11-16 08:27:58,949 INFO L431 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 [2024-11-16 08:27:58,950 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 127 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 513 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 [2024-11-16 08:27:58,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 513 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:27:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2024-11-16 08:27:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 4899. [2024-11-16 08:27:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4898 states have (on average 1.4750918742343815) internal successors, (7225), 4898 states have internal predecessors, (7225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 7225 transitions. [2024-11-16 08:27:59,028 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 7225 transitions. Word has length 72 [2024-11-16 08:27:59,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:59,028 INFO L471 AbstractCegarLoop]: Abstraction has 4899 states and 7225 transitions. [2024-11-16 08:27:59,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2024-11-16 08:27:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 7225 transitions. [2024-11-16 08:27:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:27:59,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:59,029 INFO L215 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] [2024-11-16 08:27:59,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:27:59,030 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:59,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash -311922039, now seen corresponding path program 1 times [2024-11-16 08:27:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133293499] [2024-11-16 08:27:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:59,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133293499] [2024-11-16 08:27:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133293499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:59,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:59,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 08:27:59,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522474037] [2024-11-16 08:27:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:59,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 08:27:59,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 08:27:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 08:27:59,126 INFO L87 Difference]: Start difference. First operand 4899 states and 7225 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2024-11-16 08:27:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:59,219 INFO L93 Difference]: Finished difference Result 14595 states and 21652 transitions. [2024-11-16 08:27:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 08:27:59,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 [2024-11-16 08:27:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:59,248 INFO L225 Difference]: With dead ends: 14595 [2024-11-16 08:27:59,248 INFO L226 Difference]: Without dead ends: 9804 [2024-11-16 08:27:59,257 INFO L431 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 [2024-11-16 08:27:59,258 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 428 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:27:59,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 901 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:27:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9804 states. [2024-11-16 08:27:59,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9804 to 7318. [2024-11-16 08:27:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 7317 states have (on average 1.4715047150471505) internal successors, (10767), 7317 states have internal predecessors, (10767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 10767 transitions. [2024-11-16 08:27:59,390 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 10767 transitions. Word has length 72 [2024-11-16 08:27:59,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:59,391 INFO L471 AbstractCegarLoop]: Abstraction has 7318 states and 10767 transitions. [2024-11-16 08:27:59,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2024-11-16 08:27:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 10767 transitions. [2024-11-16 08:27:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:27:59,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:59,392 INFO L215 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] [2024-11-16 08:27:59,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:27:59,392 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:59,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1138556742, now seen corresponding path program 1 times [2024-11-16 08:27:59,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:59,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072003388] [2024-11-16 08:27:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:59,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:59,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072003388] [2024-11-16 08:27:59,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072003388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:59,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:59,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:27:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25244791] [2024-11-16 08:27:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:59,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:27:59,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:27:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:27:59,470 INFO L87 Difference]: Start difference. First operand 7318 states and 10767 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2024-11-16 08:27:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:59,548 INFO L93 Difference]: Finished difference Result 15871 states and 23361 transitions. [2024-11-16 08:27:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:27:59,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 [2024-11-16 08:27:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:59,567 INFO L225 Difference]: With dead ends: 15871 [2024-11-16 08:27:59,567 INFO L226 Difference]: Without dead ends: 10764 [2024-11-16 08:27:59,577 INFO L431 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 [2024-11-16 08:27:59,577 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 134 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 550 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 [2024-11-16 08:27:59,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 550 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:27:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10764 states. [2024-11-16 08:27:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10764 to 10762. [2024-11-16 08:27:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10762 states, 10761 states have (on average 1.4580429328129356) internal successors, (15690), 10761 states have internal predecessors, (15690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10762 states to 10762 states and 15690 transitions. [2024-11-16 08:27:59,725 INFO L78 Accepts]: Start accepts. Automaton has 10762 states and 15690 transitions. Word has length 72 [2024-11-16 08:27:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:27:59,725 INFO L471 AbstractCegarLoop]: Abstraction has 10762 states and 15690 transitions. [2024-11-16 08:27:59,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2024-11-16 08:27:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 10762 states and 15690 transitions. [2024-11-16 08:27:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 08:27:59,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:27:59,726 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:27:59,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 08:27:59,727 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:27:59,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:27:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1491972791, now seen corresponding path program 1 times [2024-11-16 08:27:59,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:27:59,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756339089] [2024-11-16 08:27:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:27:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:27:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:27:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:27:59,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:27:59,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756339089] [2024-11-16 08:27:59,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756339089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:27:59,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:27:59,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 08:27:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685040663] [2024-11-16 08:27:59,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:27:59,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 08:27:59,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:27:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 08:27:59,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 08:27:59,798 INFO L87 Difference]: Start difference. First operand 10762 states and 15690 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:27:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:27:59,936 INFO L93 Difference]: Finished difference Result 34084 states and 49798 transitions. [2024-11-16 08:27:59,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 08:27:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-11-16 08:27:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:27:59,973 INFO L225 Difference]: With dead ends: 34084 [2024-11-16 08:27:59,974 INFO L226 Difference]: Without dead ends: 23414 [2024-11-16 08:27:59,992 INFO L431 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 [2024-11-16 08:27:59,992 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 460 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 816 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 [2024-11-16 08:27:59,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 816 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:28:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23414 states. [2024-11-16 08:28:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23414 to 17035. [2024-11-16 08:28:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17035 states, 17034 states have (on average 1.450275918750734) internal successors, (24704), 17034 states have internal predecessors, (24704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17035 states to 17035 states and 24704 transitions. [2024-11-16 08:28:00,402 INFO L78 Accepts]: Start accepts. Automaton has 17035 states and 24704 transitions. Word has length 74 [2024-11-16 08:28:00,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:00,403 INFO L471 AbstractCegarLoop]: Abstraction has 17035 states and 24704 transitions. [2024-11-16 08:28:00,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 17035 states and 24704 transitions. [2024-11-16 08:28:00,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 08:28:00,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:00,404 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:00,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:28:00,404 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:00,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1678720128, now seen corresponding path program 1 times [2024-11-16 08:28:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:00,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411996509] [2024-11-16 08:28:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:00,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:28:00,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411996509] [2024-11-16 08:28:00,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411996509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:00,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:00,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:28:00,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920918803] [2024-11-16 08:28:00,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:00,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:28:00,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:28:00,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:28:00,605 INFO L87 Difference]: Start difference. First operand 17035 states and 24704 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:00,763 INFO L93 Difference]: Finished difference Result 33980 states and 49287 transitions. [2024-11-16 08:28:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:28:00,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-11-16 08:28:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:00,788 INFO L225 Difference]: With dead ends: 33980 [2024-11-16 08:28:00,789 INFO L226 Difference]: Without dead ends: 17037 [2024-11-16 08:28:00,803 INFO L431 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 [2024-11-16 08:28:00,804 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 259 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:28:00,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 664 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:28:00,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17037 states. [2024-11-16 08:28:00,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17037 to 17035. [2024-11-16 08:28:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17035 states, 17034 states have (on average 1.4414700011741224) internal successors, (24554), 17034 states have internal predecessors, (24554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17035 states to 17035 states and 24554 transitions. [2024-11-16 08:28:01,038 INFO L78 Accepts]: Start accepts. Automaton has 17035 states and 24554 transitions. Word has length 77 [2024-11-16 08:28:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:01,038 INFO L471 AbstractCegarLoop]: Abstraction has 17035 states and 24554 transitions. [2024-11-16 08:28:01,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 17035 states and 24554 transitions. [2024-11-16 08:28:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 08:28:01,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:01,039 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:01,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:28:01,040 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:01,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:01,040 INFO L85 PathProgramCache]: Analyzing trace with hash -747278727, now seen corresponding path program 1 times [2024-11-16 08:28:01,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:01,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776368945] [2024-11-16 08:28:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:28:01,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:01,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776368945] [2024-11-16 08:28:01,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776368945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:01,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:28:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023209570] [2024-11-16 08:28:01,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:01,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:28:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:01,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:28:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:28:01,173 INFO L87 Difference]: Start difference. First operand 17035 states and 24554 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:01,379 INFO L93 Difference]: Finished difference Result 49079 states and 70919 transitions. [2024-11-16 08:28:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:28:01,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-16 08:28:01,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:01,420 INFO L225 Difference]: With dead ends: 49079 [2024-11-16 08:28:01,420 INFO L226 Difference]: Without dead ends: 32136 [2024-11-16 08:28:01,443 INFO L431 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 [2024-11-16 08:28:01,444 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 251 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:28:01,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 666 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:28:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32136 states. [2024-11-16 08:28:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32136 to 32134. [2024-11-16 08:28:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32134 states, 32133 states have (on average 1.4337908069585783) internal successors, (46072), 32133 states have internal predecessors, (46072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32134 states to 32134 states and 46072 transitions. [2024-11-16 08:28:01,920 INFO L78 Accepts]: Start accepts. Automaton has 32134 states and 46072 transitions. Word has length 84 [2024-11-16 08:28:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:01,921 INFO L471 AbstractCegarLoop]: Abstraction has 32134 states and 46072 transitions. [2024-11-16 08:28:01,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 32134 states and 46072 transitions. [2024-11-16 08:28:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 08:28:01,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:01,922 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:01,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:28:01,922 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:01,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash 247090568, now seen corresponding path program 1 times [2024-11-16 08:28:01,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:01,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169474709] [2024-11-16 08:28:01,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:01,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:28:02,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:02,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169474709] [2024-11-16 08:28:02,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169474709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:02,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:02,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:28:02,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032151287] [2024-11-16 08:28:02,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:02,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:28:02,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:28:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:28:02,449 INFO L87 Difference]: Start difference. First operand 32134 states and 46072 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) [2024-11-16 08:28:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:02,534 INFO L93 Difference]: Finished difference Result 35425 states and 49749 transitions. [2024-11-16 08:28:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:28:02,534 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 87 [2024-11-16 08:28:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:02,584 INFO L225 Difference]: With dead ends: 35425 [2024-11-16 08:28:02,584 INFO L226 Difference]: Without dead ends: 35423 [2024-11-16 08:28:02,598 INFO L431 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 [2024-11-16 08:28:02,598 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:28:02,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 932 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:28:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35423 states. [2024-11-16 08:28:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35423 to 35423. [2024-11-16 08:28:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35423 states, 35422 states have (on average 1.3932584269662922) internal successors, (49352), 35422 states have internal predecessors, (49352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35423 states to 35423 states and 49352 transitions. [2024-11-16 08:28:03,212 INFO L78 Accepts]: Start accepts. Automaton has 35423 states and 49352 transitions. Word has length 87 [2024-11-16 08:28:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:03,212 INFO L471 AbstractCegarLoop]: Abstraction has 35423 states and 49352 transitions. [2024-11-16 08:28:03,213 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) [2024-11-16 08:28:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 35423 states and 49352 transitions. [2024-11-16 08:28:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-16 08:28:03,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:03,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:03,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:28:03,215 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:03,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:03,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2082094368, now seen corresponding path program 1 times [2024-11-16 08:28:03,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:03,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953406463] [2024-11-16 08:28:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:03,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 08:28:03,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:03,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953406463] [2024-11-16 08:28:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953406463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:03,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:28:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355948535] [2024-11-16 08:28:03,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:03,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:28:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:28:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:28:03,371 INFO L87 Difference]: Start difference. First operand 35423 states and 49352 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:03,690 INFO L93 Difference]: Finished difference Result 92599 states and 129146 transitions. [2024-11-16 08:28:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:28:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 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 116 [2024-11-16 08:28:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:03,772 INFO L225 Difference]: With dead ends: 92599 [2024-11-16 08:28:03,772 INFO L226 Difference]: Without dead ends: 72151 [2024-11-16 08:28:03,801 INFO L431 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 [2024-11-16 08:28:03,802 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 571 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:28:03,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1092 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:28:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72151 states. [2024-11-16 08:28:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72151 to 55163. [2024-11-16 08:28:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55163 states, 55162 states have (on average 1.3912838548275988) internal successors, (76746), 55162 states have internal predecessors, (76746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55163 states to 55163 states and 76746 transitions. [2024-11-16 08:28:05,015 INFO L78 Accepts]: Start accepts. Automaton has 55163 states and 76746 transitions. Word has length 116 [2024-11-16 08:28:05,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:05,015 INFO L471 AbstractCegarLoop]: Abstraction has 55163 states and 76746 transitions. [2024-11-16 08:28:05,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 55163 states and 76746 transitions. [2024-11-16 08:28:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-16 08:28:05,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:05,018 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:05,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:28:05,018 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:05,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1733790240, now seen corresponding path program 1 times [2024-11-16 08:28:05,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:05,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360606599] [2024-11-16 08:28:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:05,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 08:28:05,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:05,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360606599] [2024-11-16 08:28:05,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360606599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:05,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:05,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:28:05,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096629550] [2024-11-16 08:28:05,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:05,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:28:05,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:28:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:28:05,139 INFO L87 Difference]: Start difference. First operand 55163 states and 76746 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:05,372 INFO L93 Difference]: Finished difference Result 101507 states and 141691 transitions. [2024-11-16 08:28:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:28:05,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 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 116 [2024-11-16 08:28:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:05,468 INFO L225 Difference]: With dead ends: 101507 [2024-11-16 08:28:05,468 INFO L226 Difference]: Without dead ends: 85217 [2024-11-16 08:28:05,505 INFO L431 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 [2024-11-16 08:28:05,505 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 583 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:28:05,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1157 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:28:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85217 states. [2024-11-16 08:28:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85217 to 77053. [2024-11-16 08:28:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77053 states, 77052 states have (on average 1.3904246482894669) internal successors, (107135), 77052 states have internal predecessors, (107135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77053 states to 77053 states and 107135 transitions. [2024-11-16 08:28:06,534 INFO L78 Accepts]: Start accepts. Automaton has 77053 states and 107135 transitions. Word has length 116 [2024-11-16 08:28:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:06,535 INFO L471 AbstractCegarLoop]: Abstraction has 77053 states and 107135 transitions. [2024-11-16 08:28:06,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 77053 states and 107135 transitions. [2024-11-16 08:28:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-16 08:28:06,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:06,540 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:06,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 08:28:06,540 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:06,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash -148389782, now seen corresponding path program 1 times [2024-11-16 08:28:06,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:06,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855974598] [2024-11-16 08:28:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 08:28:06,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:06,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855974598] [2024-11-16 08:28:06,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855974598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:06,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:06,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:28:06,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490925010] [2024-11-16 08:28:06,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:06,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:28:06,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:06,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:28:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:28:06,939 INFO L87 Difference]: Start difference. First operand 77053 states and 107135 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:07,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:07,249 INFO L93 Difference]: Finished difference Result 107991 states and 150783 transitions. [2024-11-16 08:28:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:28:07,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 116 [2024-11-16 08:28:07,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:07,368 INFO L225 Difference]: With dead ends: 107991 [2024-11-16 08:28:07,368 INFO L226 Difference]: Without dead ends: 91713 [2024-11-16 08:28:07,411 INFO L431 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 [2024-11-16 08:28:07,412 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 576 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:28:07,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1195 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:28:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91713 states. [2024-11-16 08:28:08,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91713 to 88451. [2024-11-16 08:28:08,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88451 states, 88450 states have (on average 1.3920520067834934) internal successors, (123127), 88450 states have internal predecessors, (123127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88451 states to 88451 states and 123127 transitions. [2024-11-16 08:28:08,596 INFO L78 Accepts]: Start accepts. Automaton has 88451 states and 123127 transitions. Word has length 116 [2024-11-16 08:28:08,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:08,596 INFO L471 AbstractCegarLoop]: Abstraction has 88451 states and 123127 transitions. [2024-11-16 08:28:08,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 88451 states and 123127 transitions. [2024-11-16 08:28:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 08:28:08,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:08,598 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:08,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 08:28:08,599 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:08,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash 629582824, now seen corresponding path program 1 times [2024-11-16 08:28:08,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:08,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150281076] [2024-11-16 08:28:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:08,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 08:28:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150281076] [2024-11-16 08:28:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150281076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:08,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:08,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 08:28:08,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290344138] [2024-11-16 08:28:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:08,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 08:28:08,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 08:28:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 08:28:08,675 INFO L87 Difference]: Start difference. First operand 88451 states and 123127 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:09,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:09,477 INFO L93 Difference]: Finished difference Result 151928 states and 212113 transitions. [2024-11-16 08:28:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 08:28:09,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 118 [2024-11-16 08:28:09,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:09,631 INFO L225 Difference]: With dead ends: 151928 [2024-11-16 08:28:09,631 INFO L226 Difference]: Without dead ends: 118414 [2024-11-16 08:28:09,681 INFO L431 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 [2024-11-16 08:28:09,682 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 260 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 757 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 [2024-11-16 08:28:09,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 757 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:28:09,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118414 states. [2024-11-16 08:28:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118414 to 115154. [2024-11-16 08:28:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115154 states, 115153 states have (on average 1.3907844346217642) internal successors, (160153), 115153 states have internal predecessors, (160153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115154 states to 115154 states and 160153 transitions. [2024-11-16 08:28:11,412 INFO L78 Accepts]: Start accepts. Automaton has 115154 states and 160153 transitions. Word has length 118 [2024-11-16 08:28:11,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:11,413 INFO L471 AbstractCegarLoop]: Abstraction has 115154 states and 160153 transitions. [2024-11-16 08:28:11,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 115154 states and 160153 transitions. [2024-11-16 08:28:11,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 08:28:11,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:11,415 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:11,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:28:11,416 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:11,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1175855510, now seen corresponding path program 1 times [2024-11-16 08:28:11,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:11,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718713787] [2024-11-16 08:28:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:11,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 08:28:11,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:11,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718713787] [2024-11-16 08:28:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718713787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:11,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:11,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:28:11,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65936067] [2024-11-16 08:28:11,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:11,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:28:11,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:28:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:28:11,485 INFO L87 Difference]: Start difference. First operand 115154 states and 160153 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:12,224 INFO L93 Difference]: Finished difference Result 263730 states and 367100 transitions. [2024-11-16 08:28:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:28:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 118 [2024-11-16 08:28:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:12,592 INFO L225 Difference]: With dead ends: 263730 [2024-11-16 08:28:12,592 INFO L226 Difference]: Without dead ends: 203408 [2024-11-16 08:28:12,694 INFO L431 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 [2024-11-16 08:28:12,696 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 107 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 445 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 [2024-11-16 08:28:12,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 445 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:28:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203408 states. [2024-11-16 08:28:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203408 to 203130. [2024-11-16 08:28:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203130 states, 203129 states have (on average 1.3888661884812115) internal successors, (282119), 203129 states have internal predecessors, (282119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203130 states to 203130 states and 282119 transitions. [2024-11-16 08:28:15,753 INFO L78 Accepts]: Start accepts. Automaton has 203130 states and 282119 transitions. Word has length 118 [2024-11-16 08:28:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:15,753 INFO L471 AbstractCegarLoop]: Abstraction has 203130 states and 282119 transitions. [2024-11-16 08:28:15,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:15,754 INFO L276 IsEmpty]: Start isEmpty. Operand 203130 states and 282119 transitions. [2024-11-16 08:28:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-16 08:28:15,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:15,759 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:15,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 08:28:15,760 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:15,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -755064451, now seen corresponding path program 1 times [2024-11-16 08:28:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:15,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476277018] [2024-11-16 08:28:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:28:15,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:15,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476277018] [2024-11-16 08:28:15,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476277018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:15,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:15,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:28:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648003343] [2024-11-16 08:28:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:15,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:28:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:15,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:28:15,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:28:15,836 INFO L87 Difference]: Start difference. First operand 203130 states and 282119 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:17,986 INFO L93 Difference]: Finished difference Result 601450 states and 833963 transitions. [2024-11-16 08:28:17,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:28:17,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-16 08:28:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:18,746 INFO L225 Difference]: With dead ends: 601450 [2024-11-16 08:28:18,746 INFO L226 Difference]: Without dead ends: 398399 [2024-11-16 08:28:18,908 INFO L431 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 [2024-11-16 08:28:18,909 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 152 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 533 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 [2024-11-16 08:28:18,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 533 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:28:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398399 states. [2024-11-16 08:28:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398399 to 398397. [2024-11-16 08:28:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398397 states, 398396 states have (on average 1.378638339742367) internal successors, (549244), 398396 states have internal predecessors, (549244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398397 states to 398397 states and 549244 transitions. [2024-11-16 08:28:25,783 INFO L78 Accepts]: Start accepts. Automaton has 398397 states and 549244 transitions. Word has length 119 [2024-11-16 08:28:25,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:28:25,784 INFO L471 AbstractCegarLoop]: Abstraction has 398397 states and 549244 transitions. [2024-11-16 08:28:25,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 398397 states and 549244 transitions. [2024-11-16 08:28:25,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-16 08:28:25,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:28:25,793 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:28:25,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 08:28:25,794 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:28:25,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:28:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2140901698, now seen corresponding path program 1 times [2024-11-16 08:28:25,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:28:25,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994476748] [2024-11-16 08:28:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:28:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:28:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:28:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:28:25,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:28:25,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994476748] [2024-11-16 08:28:25,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994476748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:28:25,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:28:25,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:28:25,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699619054] [2024-11-16 08:28:25,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:28:25,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:28:25,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:28:25,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:28:25,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:28:25,908 INFO L87 Difference]: Start difference. First operand 398397 states and 549244 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:28:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:28:30,249 INFO L93 Difference]: Finished difference Result 1179357 states and 1623023 transitions. [2024-11-16 08:28:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:28:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-16 08:28:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:28:31,870 INFO L225 Difference]: With dead ends: 1179357 [2024-11-16 08:28:31,871 INFO L226 Difference]: Without dead ends: 781115 [2024-11-16 08:28:32,079 INFO L431 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 [2024-11-16 08:28:32,080 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 173 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 570 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 [2024-11-16 08:28:32,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 570 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:28:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781115 states.