./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.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_lcr-var-start-time.4.2.ufo.BOUNDED-8.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 7b954f9d8b4ab9030eea8f5c4186ef19ab45ad4620470fe362259155373d879e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:34:02,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:34:02,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:34:02,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:34:02,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:34:02,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:34:02,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:34:02,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:34:02,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:34:02,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:34:02,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:34:02,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:34:02,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:34:02,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:34:02,525 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:34:02,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:34:02,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:34:02,526 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:34:02,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:34:02,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:34:02,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:34:02,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:34:02,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:34:02,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:34:02,529 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:34:02,530 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:34:02,530 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:34:02,530 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:34:02,531 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:34:02,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:34:02,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:34:02,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:34:02,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:34:02,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:34:02,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:34:02,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:34:02,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:34:02,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:34:02,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:34:02,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:34:02,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:34:02,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:34:02,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b954f9d8b4ab9030eea8f5c4186ef19ab45ad4620470fe362259155373d879e [2024-11-16 08:34:02,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:34:02,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:34:02,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:34:02,806 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:34:02,806 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:34:02,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:34:04,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:34:04,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:34:04,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:34:04,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc520ece/5a18049a9b5b4830b3c4313615c7d4a8/FLAGb62629c44 [2024-11-16 08:34:04,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc520ece/5a18049a9b5b4830b3c4313615c7d4a8 [2024-11-16 08:34:04,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:34:04,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:34:04,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:34:04,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:34:04,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:34:04,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:04,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441bba0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04, skipping insertion in model container [2024-11-16 08:34:04,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:04,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:34:04,850 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2024-11-16 08:34:04,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:34:04,895 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:34:04,942 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2024-11-16 08:34:04,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:34:04,987 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:34:04,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04 WrapperNode [2024-11-16 08:34:04,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:34:04,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:34:04,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:34:04,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:34:04,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,043 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 457 [2024-11-16 08:34:05,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:34:05,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:34:05,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:34:05,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:34:05,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,078 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 08:34:05,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,091 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:34:05,099 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:34:05,099 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:34:05,099 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:34:05,100 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (1/1) ... [2024-11-16 08:34:05,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:34:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:05,138 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 08:34:05,148 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 08:34:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:34:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:34:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:34:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:34:05,350 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:34:05,352 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:34:05,861 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L349: havoc main_~node4____CPAchecker_TMP_1~0#1; [2024-11-16 08:34:05,862 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L218: havoc main_~node4__m4~0#1; [2024-11-16 08:34:05,862 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L435: havoc main_~node3____CPAchecker_TMP_1~0#1; [2024-11-16 08:34:05,862 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L321: havoc main_~node4____CPAchecker_TMP_0~0#1; [2024-11-16 08:34:05,863 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L521: havoc main_~node2____CPAchecker_TMP_1~0#1; [2024-11-16 08:34:05,863 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L407: havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-16 08:34:05,863 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L493: havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-16 08:34:05,863 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L163: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-16 08:34:05,863 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L182: havoc main_~node2__m2~0#1; [2024-11-16 08:34:05,863 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L579: havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-16 08:34:05,864 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-16 08:34:05,864 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L200: havoc main_~node3__m3~0#1; [2024-11-16 08:34:05,897 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-16 08:34:05,897 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:34:05,916 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:34:05,918 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:34:05,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:34:05 BoogieIcfgContainer [2024-11-16 08:34:05,918 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:34:05,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:34:05,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:34:05,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:34:05,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:34:04" (1/3) ... [2024-11-16 08:34:05,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7456ea54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:34:05, skipping insertion in model container [2024-11-16 08:34:05,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:04" (2/3) ... [2024-11-16 08:34:05,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7456ea54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:34:05, skipping insertion in model container [2024-11-16 08:34:05,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:34:05" (3/3) ... [2024-11-16 08:34:05,929 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:34:05,947 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:34:05,947 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:34:06,020 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:34:06,028 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;@7f14a50e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:34:06,029 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:34:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 110 states have (on average 1.6545454545454545) internal successors, (182), 111 states have internal predecessors, (182), 0 states have call successors, (0), 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 08:34:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:34:06,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:06,045 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] [2024-11-16 08:34:06,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:06,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:06,049 INFO L85 PathProgramCache]: Analyzing trace with hash 889827358, now seen corresponding path program 1 times [2024-11-16 08:34:06,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:06,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247538953] [2024-11-16 08:34:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:06,533 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 08:34:06,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:06,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247538953] [2024-11-16 08:34:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247538953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:06,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052309102] [2024-11-16 08:34:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:06,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:06,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:06,571 INFO L87 Difference]: Start difference. First operand has 112 states, 110 states have (on average 1.6545454545454545) internal successors, (182), 111 states have internal predecessors, (182), 0 states have call successors, (0), 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 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 08:34:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:06,650 INFO L93 Difference]: Finished difference Result 263 states and 413 transitions. [2024-11-16 08:34:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-16 08:34:06,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:06,664 INFO L225 Difference]: With dead ends: 263 [2024-11-16 08:34:06,664 INFO L226 Difference]: Without dead ends: 172 [2024-11-16 08:34:06,667 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 08:34:06,670 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 125 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:06,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 379 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-16 08:34:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2024-11-16 08:34:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.467455621301775) internal successors, (248), 169 states have internal predecessors, (248), 0 states have call successors, (0), 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 08:34:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 248 transitions. [2024-11-16 08:34:06,712 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 248 transitions. Word has length 49 [2024-11-16 08:34:06,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:06,712 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 248 transitions. [2024-11-16 08:34:06,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 08:34:06,713 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 248 transitions. [2024-11-16 08:34:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 08:34:06,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:06,719 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] [2024-11-16 08:34:06,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:34:06,719 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:06,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:06,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1029501832, now seen corresponding path program 1 times [2024-11-16 08:34:06,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:06,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411068790] [2024-11-16 08:34:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:06,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:06,855 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 08:34:06,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:06,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411068790] [2024-11-16 08:34:06,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411068790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:06,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:06,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202477840] [2024-11-16 08:34:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:06,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:06,860 INFO L87 Difference]: Start difference. First operand 170 states and 248 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 08:34:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:06,917 INFO L93 Difference]: Finished difference Result 422 states and 636 transitions. [2024-11-16 08:34:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:06,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-16 08:34:06,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:06,920 INFO L225 Difference]: With dead ends: 422 [2024-11-16 08:34:06,920 INFO L226 Difference]: Without dead ends: 279 [2024-11-16 08:34:06,921 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 08:34:06,922 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 102 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 322 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 08:34:06,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 322 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-16 08:34:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2024-11-16 08:34:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.4927536231884058) internal successors, (412), 276 states have internal predecessors, (412), 0 states have call successors, (0), 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 08:34:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 412 transitions. [2024-11-16 08:34:06,950 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 412 transitions. Word has length 50 [2024-11-16 08:34:06,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:06,951 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 412 transitions. [2024-11-16 08:34:06,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 08:34:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 412 transitions. [2024-11-16 08:34:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 08:34:06,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:06,957 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] [2024-11-16 08:34:06,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:34:06,957 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:06,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1832755337, now seen corresponding path program 1 times [2024-11-16 08:34:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647102478] [2024-11-16 08:34:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:06,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:07,062 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 08:34:07,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:07,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647102478] [2024-11-16 08:34:07,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647102478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:07,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:07,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:07,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929543731] [2024-11-16 08:34:07,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:07,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:07,068 INFO L87 Difference]: Start difference. First operand 277 states and 412 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 08:34:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:07,094 INFO L93 Difference]: Finished difference Result 709 states and 1074 transitions. [2024-11-16 08:34:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:07,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-16 08:34:07,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:07,098 INFO L225 Difference]: With dead ends: 709 [2024-11-16 08:34:07,098 INFO L226 Difference]: Without dead ends: 459 [2024-11-16 08:34:07,099 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 08:34:07,100 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 97 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 307 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 08:34:07,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 307 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-16 08:34:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2024-11-16 08:34:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.5) internal successors, (684), 456 states have internal predecessors, (684), 0 states have call successors, (0), 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 08:34:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 684 transitions. [2024-11-16 08:34:07,117 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 684 transitions. Word has length 51 [2024-11-16 08:34:07,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:07,118 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 684 transitions. [2024-11-16 08:34:07,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 08:34:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 684 transitions. [2024-11-16 08:34:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 08:34:07,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:07,120 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] [2024-11-16 08:34:07,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:34:07,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:07,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1954961407, now seen corresponding path program 1 times [2024-11-16 08:34:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:07,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548320163] [2024-11-16 08:34:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:07,325 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 08:34:07,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:07,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548320163] [2024-11-16 08:34:07,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548320163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:07,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:07,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:07,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428794773] [2024-11-16 08:34:07,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:07,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:07,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:07,330 INFO L87 Difference]: Start difference. First operand 457 states and 684 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 08:34:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:07,528 INFO L93 Difference]: Finished difference Result 2607 states and 3969 transitions. [2024-11-16 08:34:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:07,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-16 08:34:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:07,537 INFO L225 Difference]: With dead ends: 2607 [2024-11-16 08:34:07,537 INFO L226 Difference]: Without dead ends: 2177 [2024-11-16 08:34:07,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:34:07,543 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 893 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:07,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1326 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:34:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2024-11-16 08:34:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 885. [2024-11-16 08:34:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.497737556561086) internal successors, (1324), 884 states have internal predecessors, (1324), 0 states have call successors, (0), 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 08:34:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1324 transitions. [2024-11-16 08:34:07,590 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1324 transitions. Word has length 52 [2024-11-16 08:34:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:07,591 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1324 transitions. [2024-11-16 08:34:07,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 08:34:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1324 transitions. [2024-11-16 08:34:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 08:34:07,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:07,597 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] [2024-11-16 08:34:07,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:34:07,597 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:07,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1786631967, now seen corresponding path program 1 times [2024-11-16 08:34:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:07,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866953111] [2024-11-16 08:34:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:07,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:07,810 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 08:34:07,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:07,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866953111] [2024-11-16 08:34:07,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866953111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:07,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:07,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:07,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6500843] [2024-11-16 08:34:07,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:07,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:07,815 INFO L87 Difference]: Start difference. First operand 885 states and 1324 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 08:34:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:07,915 INFO L93 Difference]: Finished difference Result 3861 states and 5792 transitions. [2024-11-16 08:34:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-16 08:34:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:07,928 INFO L225 Difference]: With dead ends: 3861 [2024-11-16 08:34:07,929 INFO L226 Difference]: Without dead ends: 3003 [2024-11-16 08:34:07,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:07,934 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 472 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:07,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 611 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:34:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2024-11-16 08:34:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 2997. [2024-11-16 08:34:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2996 states have (on average 1.493991989319092) internal successors, (4476), 2996 states have internal predecessors, (4476), 0 states have call successors, (0), 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 08:34:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 4476 transitions. [2024-11-16 08:34:07,999 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 4476 transitions. Word has length 54 [2024-11-16 08:34:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:08,000 INFO L471 AbstractCegarLoop]: Abstraction has 2997 states and 4476 transitions. [2024-11-16 08:34:08,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 08:34:08,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 4476 transitions. [2024-11-16 08:34:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 08:34:08,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:08,004 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] [2024-11-16 08:34:08,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:34:08,004 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:08,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash 625678704, now seen corresponding path program 1 times [2024-11-16 08:34:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:08,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339846384] [2024-11-16 08:34:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:08,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:08,072 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 08:34:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339846384] [2024-11-16 08:34:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339846384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:08,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:08,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:08,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395414040] [2024-11-16 08:34:08,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:08,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:08,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:08,075 INFO L87 Difference]: Start difference. First operand 2997 states and 4476 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 08:34:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:08,137 INFO L93 Difference]: Finished difference Result 8169 states and 12158 transitions. [2024-11-16 08:34:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:08,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-16 08:34:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:08,160 INFO L225 Difference]: With dead ends: 8169 [2024-11-16 08:34:08,160 INFO L226 Difference]: Without dead ends: 5199 [2024-11-16 08:34:08,165 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 08:34:08,166 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 111 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 371 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 08:34:08,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 371 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2024-11-16 08:34:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 5197. [2024-11-16 08:34:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.4711316397228638) internal successors, (7644), 5196 states have internal predecessors, (7644), 0 states have call successors, (0), 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 08:34:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7644 transitions. [2024-11-16 08:34:08,272 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7644 transitions. Word has length 54 [2024-11-16 08:34:08,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:08,272 INFO L471 AbstractCegarLoop]: Abstraction has 5197 states and 7644 transitions. [2024-11-16 08:34:08,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 08:34:08,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7644 transitions. [2024-11-16 08:34:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 08:34:08,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:08,274 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] [2024-11-16 08:34:08,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:34:08,274 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:08,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:08,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1077158783, now seen corresponding path program 1 times [2024-11-16 08:34:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:08,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870170117] [2024-11-16 08:34:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:08,619 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 08:34:08,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:08,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870170117] [2024-11-16 08:34:08,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870170117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:08,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:08,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:34:08,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898367129] [2024-11-16 08:34:08,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:08,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:34:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:34:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:34:08,622 INFO L87 Difference]: Start difference. First operand 5197 states and 7644 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:08,677 INFO L93 Difference]: Finished difference Result 5583 states and 8157 transitions. [2024-11-16 08:34:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:34:08,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-16 08:34:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:08,698 INFO L225 Difference]: With dead ends: 5583 [2024-11-16 08:34:08,699 INFO L226 Difference]: Without dead ends: 5581 [2024-11-16 08:34:08,702 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 08:34:08,703 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:08,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 585 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2024-11-16 08:34:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 5581. [2024-11-16 08:34:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5581 states, 5580 states have (on average 1.4387096774193548) internal successors, (8028), 5580 states have internal predecessors, (8028), 0 states have call successors, (0), 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 08:34:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5581 states to 5581 states and 8028 transitions. [2024-11-16 08:34:08,810 INFO L78 Accepts]: Start accepts. Automaton has 5581 states and 8028 transitions. Word has length 56 [2024-11-16 08:34:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:08,811 INFO L471 AbstractCegarLoop]: Abstraction has 5581 states and 8028 transitions. [2024-11-16 08:34:08,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5581 states and 8028 transitions. [2024-11-16 08:34:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 08:34:08,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:08,813 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] [2024-11-16 08:34:08,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:34:08,815 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:08,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash -820020887, now seen corresponding path program 1 times [2024-11-16 08:34:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639982805] [2024-11-16 08:34:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:08,889 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 08:34:08,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:08,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639982805] [2024-11-16 08:34:08,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639982805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:08,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:08,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:08,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037213437] [2024-11-16 08:34:08,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:08,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:08,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:08,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:08,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:08,893 INFO L87 Difference]: Start difference. First operand 5581 states and 8028 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:08,944 INFO L93 Difference]: Finished difference Result 13420 states and 19333 transitions. [2024-11-16 08:34:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:08,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 08:34:08,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:08,979 INFO L225 Difference]: With dead ends: 13420 [2024-11-16 08:34:08,980 INFO L226 Difference]: Without dead ends: 7866 [2024-11-16 08:34:08,993 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 08:34:08,994 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 87 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:08,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7866 states. [2024-11-16 08:34:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7866 to 7864. [2024-11-16 08:34:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7864 states, 7863 states have (on average 1.4339310695663232) internal successors, (11275), 7863 states have internal predecessors, (11275), 0 states have call successors, (0), 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 08:34:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7864 states to 7864 states and 11275 transitions. [2024-11-16 08:34:09,191 INFO L78 Accepts]: Start accepts. Automaton has 7864 states and 11275 transitions. Word has length 57 [2024-11-16 08:34:09,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:09,191 INFO L471 AbstractCegarLoop]: Abstraction has 7864 states and 11275 transitions. [2024-11-16 08:34:09,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:09,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7864 states and 11275 transitions. [2024-11-16 08:34:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 08:34:09,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:09,197 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:09,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:34:09,197 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:09,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:09,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1544071157, now seen corresponding path program 1 times [2024-11-16 08:34:09,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:09,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478778031] [2024-11-16 08:34:09,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:09,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:34:09,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:09,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478778031] [2024-11-16 08:34:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478778031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:09,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688540537] [2024-11-16 08:34:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:09,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:09,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:09,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:09,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:34:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:09,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 08:34:09,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:10,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:10,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688540537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:10,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:10,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 14 [2024-11-16 08:34:10,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766722693] [2024-11-16 08:34:10,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:10,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 08:34:10,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 08:34:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-16 08:34:10,970 INFO L87 Difference]: Start difference. First operand 7864 states and 11275 transitions. Second operand has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 0 states have call successors, (0), 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 08:34:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:11,809 INFO L93 Difference]: Finished difference Result 24365 states and 34845 transitions. [2024-11-16 08:34:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 08:34:11,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 08:34:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:11,851 INFO L225 Difference]: With dead ends: 24365 [2024-11-16 08:34:11,851 INFO L226 Difference]: Without dead ends: 16531 [2024-11-16 08:34:11,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2024-11-16 08:34:11,868 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 1814 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:11,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 2385 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:34:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16531 states. [2024-11-16 08:34:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16531 to 13545. [2024-11-16 08:34:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13545 states, 13544 states have (on average 1.422844063792085) internal successors, (19271), 13544 states have internal predecessors, (19271), 0 states have call successors, (0), 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 08:34:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13545 states to 13545 states and 19271 transitions. [2024-11-16 08:34:12,133 INFO L78 Accepts]: Start accepts. Automaton has 13545 states and 19271 transitions. Word has length 80 [2024-11-16 08:34:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:12,133 INFO L471 AbstractCegarLoop]: Abstraction has 13545 states and 19271 transitions. [2024-11-16 08:34:12,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 0 states have call successors, (0), 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 08:34:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 13545 states and 19271 transitions. [2024-11-16 08:34:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:34:12,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:12,137 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:12,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 08:34:12,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:12,338 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:12,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:12,338 INFO L85 PathProgramCache]: Analyzing trace with hash -307075572, now seen corresponding path program 1 times [2024-11-16 08:34:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:12,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784851986] [2024-11-16 08:34:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784851986] [2024-11-16 08:34:12,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784851986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:12,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:12,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:12,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921715733] [2024-11-16 08:34:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:12,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:12,416 INFO L87 Difference]: Start difference. First operand 13545 states and 19271 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:12,562 INFO L93 Difference]: Finished difference Result 33997 states and 48302 transitions. [2024-11-16 08:34:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 08:34:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:12,609 INFO L225 Difference]: With dead ends: 33997 [2024-11-16 08:34:12,609 INFO L226 Difference]: Without dead ends: 23297 [2024-11-16 08:34:12,626 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 08:34:12,627 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 83 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:12,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 299 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23297 states. [2024-11-16 08:34:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23297 to 23295. [2024-11-16 08:34:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23295 states, 23294 states have (on average 1.4089894393406028) internal successors, (32821), 23294 states have internal predecessors, (32821), 0 states have call successors, (0), 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 08:34:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23295 states to 23295 states and 32821 transitions. [2024-11-16 08:34:13,190 INFO L78 Accepts]: Start accepts. Automaton has 23295 states and 32821 transitions. Word has length 81 [2024-11-16 08:34:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:13,190 INFO L471 AbstractCegarLoop]: Abstraction has 23295 states and 32821 transitions. [2024-11-16 08:34:13,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 23295 states and 32821 transitions. [2024-11-16 08:34:13,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:34:13,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:13,197 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:13,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:34:13,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:13,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1665726260, now seen corresponding path program 1 times [2024-11-16 08:34:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:13,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410420174] [2024-11-16 08:34:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:13,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:13,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:13,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410420174] [2024-11-16 08:34:13,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410420174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:13,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:13,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568495119] [2024-11-16 08:34:13,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:13,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:13,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:13,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:13,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:13,270 INFO L87 Difference]: Start difference. First operand 23295 states and 32821 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:13,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:13,470 INFO L93 Difference]: Finished difference Result 58007 states and 81323 transitions. [2024-11-16 08:34:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:13,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 08:34:13,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:13,538 INFO L225 Difference]: With dead ends: 58007 [2024-11-16 08:34:13,539 INFO L226 Difference]: Without dead ends: 37728 [2024-11-16 08:34:13,570 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 08:34:13,571 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 83 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:13,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 302 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37728 states. [2024-11-16 08:34:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37728 to 36876. [2024-11-16 08:34:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36876 states, 36875 states have (on average 1.3900203389830508) internal successors, (51257), 36875 states have internal predecessors, (51257), 0 states have call successors, (0), 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 08:34:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36876 states to 36876 states and 51257 transitions. [2024-11-16 08:34:14,392 INFO L78 Accepts]: Start accepts. Automaton has 36876 states and 51257 transitions. Word has length 81 [2024-11-16 08:34:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:14,393 INFO L471 AbstractCegarLoop]: Abstraction has 36876 states and 51257 transitions. [2024-11-16 08:34:14,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 36876 states and 51257 transitions. [2024-11-16 08:34:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:34:14,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:14,401 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:14,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:34:14,402 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:14,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash -419755124, now seen corresponding path program 1 times [2024-11-16 08:34:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:14,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284023197] [2024-11-16 08:34:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:14,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:14,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:14,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284023197] [2024-11-16 08:34:14,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284023197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:14,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:14,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:14,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669215757] [2024-11-16 08:34:14,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:14,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:14,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:14,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:14,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:14,480 INFO L87 Difference]: Start difference. First operand 36876 states and 51257 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:14,769 INFO L93 Difference]: Finished difference Result 83393 states and 115070 transitions. [2024-11-16 08:34:14,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:14,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 08:34:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:14,879 INFO L225 Difference]: With dead ends: 83393 [2024-11-16 08:34:14,880 INFO L226 Difference]: Without dead ends: 55440 [2024-11-16 08:34:14,921 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 08:34:14,922 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 84 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:14,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 331 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55440 states. [2024-11-16 08:34:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55440 to 53982. [2024-11-16 08:34:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53982 states, 53981 states have (on average 1.366703099238621) internal successors, (73776), 53981 states have internal predecessors, (73776), 0 states have call successors, (0), 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 08:34:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53982 states to 53982 states and 73776 transitions. [2024-11-16 08:34:15,816 INFO L78 Accepts]: Start accepts. Automaton has 53982 states and 73776 transitions. Word has length 81 [2024-11-16 08:34:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:15,817 INFO L471 AbstractCegarLoop]: Abstraction has 53982 states and 73776 transitions. [2024-11-16 08:34:15,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 53982 states and 73776 transitions. [2024-11-16 08:34:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:34:15,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:15,824 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:15,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:34:15,825 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:15,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash 321809996, now seen corresponding path program 1 times [2024-11-16 08:34:15,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:15,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812731488] [2024-11-16 08:34:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:15,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 08:34:15,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:15,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812731488] [2024-11-16 08:34:15,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812731488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:15,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:15,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:15,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373332179] [2024-11-16 08:34:15,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:15,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:15,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:15,985 INFO L87 Difference]: Start difference. First operand 53982 states and 73776 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 08:34:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:16,447 INFO L93 Difference]: Finished difference Result 131121 states and 180151 transitions. [2024-11-16 08:34:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:16,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 08:34:16,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:16,833 INFO L225 Difference]: With dead ends: 131121 [2024-11-16 08:34:16,834 INFO L226 Difference]: Without dead ends: 115087 [2024-11-16 08:34:16,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:34:16,877 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 786 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:16,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 883 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:34:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115087 states. [2024-11-16 08:34:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115087 to 69653. [2024-11-16 08:34:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69653 states, 69652 states have (on average 1.3606644461034858) internal successors, (94773), 69652 states have internal predecessors, (94773), 0 states have call successors, (0), 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 08:34:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69653 states to 69653 states and 94773 transitions. [2024-11-16 08:34:18,130 INFO L78 Accepts]: Start accepts. Automaton has 69653 states and 94773 transitions. Word has length 81 [2024-11-16 08:34:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:18,131 INFO L471 AbstractCegarLoop]: Abstraction has 69653 states and 94773 transitions. [2024-11-16 08:34:18,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 08:34:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 69653 states and 94773 transitions. [2024-11-16 08:34:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:34:18,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:18,138 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:18,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:34:18,139 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:18,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:18,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2056405480, now seen corresponding path program 1 times [2024-11-16 08:34:18,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:18,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919106862] [2024-11-16 08:34:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:18,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 08:34:18,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:18,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919106862] [2024-11-16 08:34:18,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919106862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:18,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:18,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:18,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930913541] [2024-11-16 08:34:18,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:18,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:18,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:18,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:18,278 INFO L87 Difference]: Start difference. First operand 69653 states and 94773 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 08:34:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:18,960 INFO L93 Difference]: Finished difference Result 151449 states and 207711 transitions. [2024-11-16 08:34:18,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:18,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 81 [2024-11-16 08:34:18,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:19,115 INFO L225 Difference]: With dead ends: 151449 [2024-11-16 08:34:19,115 INFO L226 Difference]: Without dead ends: 130487 [2024-11-16 08:34:19,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:34:19,170 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 719 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:19,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 947 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:34:19,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130487 states. [2024-11-16 08:34:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130487 to 90274. [2024-11-16 08:34:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90274 states, 90273 states have (on average 1.358202341785473) internal successors, (122609), 90273 states have internal predecessors, (122609), 0 states have call successors, (0), 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 08:34:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90274 states to 90274 states and 122609 transitions. [2024-11-16 08:34:20,808 INFO L78 Accepts]: Start accepts. Automaton has 90274 states and 122609 transitions. Word has length 81 [2024-11-16 08:34:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:20,808 INFO L471 AbstractCegarLoop]: Abstraction has 90274 states and 122609 transitions. [2024-11-16 08:34:20,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 08:34:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 90274 states and 122609 transitions. [2024-11-16 08:34:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:34:20,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:20,816 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:20,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:34:20,817 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:20,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash 96903756, now seen corresponding path program 1 times [2024-11-16 08:34:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845777347] [2024-11-16 08:34:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 08:34:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:20,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845777347] [2024-11-16 08:34:20,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845777347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:20,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:20,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140927631] [2024-11-16 08:34:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:20,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:20,968 INFO L87 Difference]: Start difference. First operand 90274 states and 122609 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 08:34:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:21,783 INFO L93 Difference]: Finished difference Result 175011 states and 239615 transitions. [2024-11-16 08:34:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:21,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 08:34:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:21,966 INFO L225 Difference]: With dead ends: 175011 [2024-11-16 08:34:21,966 INFO L226 Difference]: Without dead ends: 150921 [2024-11-16 08:34:22,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:34:22,016 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 774 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:22,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1005 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:34:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150921 states. [2024-11-16 08:34:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150921 to 110267. [2024-11-16 08:34:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110267 states, 110266 states have (on average 1.3581974498032032) internal successors, (149763), 110266 states have internal predecessors, (149763), 0 states have call successors, (0), 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 08:34:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110267 states to 110267 states and 149763 transitions. [2024-11-16 08:34:24,015 INFO L78 Accepts]: Start accepts. Automaton has 110267 states and 149763 transitions. Word has length 81 [2024-11-16 08:34:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:24,015 INFO L471 AbstractCegarLoop]: Abstraction has 110267 states and 149763 transitions. [2024-11-16 08:34:24,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 08:34:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 110267 states and 149763 transitions. [2024-11-16 08:34:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:34:24,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:24,024 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:24,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 08:34:24,024 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:24,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:24,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1157667140, now seen corresponding path program 1 times [2024-11-16 08:34:24,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:24,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238331373] [2024-11-16 08:34:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:24,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:34:24,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:24,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238331373] [2024-11-16 08:34:24,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238331373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:24,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:24,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:24,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706354575] [2024-11-16 08:34:24,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:24,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:24,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:24,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:24,190 INFO L87 Difference]: Start difference. First operand 110267 states and 149763 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:25,399 INFO L93 Difference]: Finished difference Result 200626 states and 274220 transitions. [2024-11-16 08:34:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:25,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:34:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:25,717 INFO L225 Difference]: With dead ends: 200626 [2024-11-16 08:34:25,717 INFO L226 Difference]: Without dead ends: 174792 [2024-11-16 08:34:25,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:34:25,740 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 770 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:25,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 910 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:34:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174792 states. [2024-11-16 08:34:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174792 to 127170. [2024-11-16 08:34:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127170 states, 127169 states have (on average 1.3583499123213991) internal successors, (172740), 127169 states have internal predecessors, (172740), 0 states have call successors, (0), 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 08:34:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127170 states to 127170 states and 172740 transitions. [2024-11-16 08:34:27,879 INFO L78 Accepts]: Start accepts. Automaton has 127170 states and 172740 transitions. Word has length 82 [2024-11-16 08:34:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:27,880 INFO L471 AbstractCegarLoop]: Abstraction has 127170 states and 172740 transitions. [2024-11-16 08:34:27,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 127170 states and 172740 transitions. [2024-11-16 08:34:27,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 08:34:27,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:27,888 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:27,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 08:34:27,888 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:27,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:27,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1487883937, now seen corresponding path program 1 times [2024-11-16 08:34:27,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:27,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871600742] [2024-11-16 08:34:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:27,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:27,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:27,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871600742] [2024-11-16 08:34:27,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871600742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:27,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:27,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465590869] [2024-11-16 08:34:27,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:27,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:27,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:27,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:27,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:27,955 INFO L87 Difference]: Start difference. First operand 127170 states and 172740 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:28,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:28,406 INFO L93 Difference]: Finished difference Result 225276 states and 304788 transitions. [2024-11-16 08:34:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:28,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-16 08:34:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:28,568 INFO L225 Difference]: With dead ends: 225276 [2024-11-16 08:34:28,569 INFO L226 Difference]: Without dead ends: 129468 [2024-11-16 08:34:28,645 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 08:34:28,645 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 83 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:28,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 369 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129468 states. [2024-11-16 08:34:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129468 to 118640. [2024-11-16 08:34:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118640 states, 118639 states have (on average 1.3474321260293833) internal successors, (159858), 118639 states have internal predecessors, (159858), 0 states have call successors, (0), 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 08:34:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118640 states to 118640 states and 159858 transitions. [2024-11-16 08:34:31,241 INFO L78 Accepts]: Start accepts. Automaton has 118640 states and 159858 transitions. Word has length 85 [2024-11-16 08:34:31,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:31,242 INFO L471 AbstractCegarLoop]: Abstraction has 118640 states and 159858 transitions. [2024-11-16 08:34:31,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 118640 states and 159858 transitions. [2024-11-16 08:34:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 08:34:31,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:31,251 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:31,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:34:31,251 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:31,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1350772413, now seen corresponding path program 1 times [2024-11-16 08:34:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:31,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032942684] [2024-11-16 08:34:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:31,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:31,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:31,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032942684] [2024-11-16 08:34:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032942684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:31,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998031514] [2024-11-16 08:34:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:31,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:31,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:31,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:31,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:34:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:31,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:34:31,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:31,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998031514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:31,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:31,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:34:31,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859047942] [2024-11-16 08:34:31,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:31,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:34:31,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:34:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:34:31,882 INFO L87 Difference]: Start difference. First operand 118640 states and 159858 transitions. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 08:34:32,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:32,692 INFO L93 Difference]: Finished difference Result 287445 states and 390340 transitions. [2024-11-16 08:34:32,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:34:32,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 08:34:32,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:33,555 INFO L225 Difference]: With dead ends: 287445 [2024-11-16 08:34:33,555 INFO L226 Difference]: Without dead ends: 185257 [2024-11-16 08:34:33,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 164 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:34:33,602 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 1610 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:33,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 419 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:34:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185257 states. [2024-11-16 08:34:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185257 to 133513. [2024-11-16 08:34:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133513 states, 133512 states have (on average 1.3508972976211877) internal successors, (180361), 133512 states have internal predecessors, (180361), 0 states have call successors, (0), 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 08:34:35,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133513 states to 133513 states and 180361 transitions. [2024-11-16 08:34:35,428 INFO L78 Accepts]: Start accepts. Automaton has 133513 states and 180361 transitions. Word has length 87 [2024-11-16 08:34:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:35,429 INFO L471 AbstractCegarLoop]: Abstraction has 133513 states and 180361 transitions. [2024-11-16 08:34:35,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 08:34:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 133513 states and 180361 transitions. [2024-11-16 08:34:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 08:34:35,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:35,437 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:35,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 08:34:35,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 08:34:35,638 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:35,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:35,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1429909159, now seen corresponding path program 1 times [2024-11-16 08:34:35,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:35,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953403800] [2024-11-16 08:34:35,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:35,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:35,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953403800] [2024-11-16 08:34:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953403800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997217508] [2024-11-16 08:34:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:35,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:35,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:35,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:35,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:34:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:35,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:34:35,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:36,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:36,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997217508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:36,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:36,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:34:36,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745560171] [2024-11-16 08:34:36,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:36,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:34:36,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:36,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:34:36,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:34:36,305 INFO L87 Difference]: Start difference. First operand 133513 states and 180361 transitions. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 08:34:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:38,027 INFO L93 Difference]: Finished difference Result 305834 states and 416492 transitions. [2024-11-16 08:34:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:34:38,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 08:34:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:38,280 INFO L225 Difference]: With dead ends: 305834 [2024-11-16 08:34:38,280 INFO L226 Difference]: Without dead ends: 180300 [2024-11-16 08:34:38,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 164 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:34:38,393 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 1004 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:38,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 440 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 08:34:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180300 states. [2024-11-16 08:34:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180300 to 132693. [2024-11-16 08:34:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132693 states, 132692 states have (on average 1.3565248846953848) internal successors, (180000), 132692 states have internal predecessors, (180000), 0 states have call successors, (0), 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 08:34:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132693 states to 132693 states and 180000 transitions. [2024-11-16 08:34:41,316 INFO L78 Accepts]: Start accepts. Automaton has 132693 states and 180000 transitions. Word has length 87 [2024-11-16 08:34:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:41,317 INFO L471 AbstractCegarLoop]: Abstraction has 132693 states and 180000 transitions. [2024-11-16 08:34:41,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 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 08:34:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 132693 states and 180000 transitions. [2024-11-16 08:34:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 08:34:41,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:41,325 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:41,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 08:34:41,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:41,526 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:41,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash -498815209, now seen corresponding path program 1 times [2024-11-16 08:34:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:41,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404071545] [2024-11-16 08:34:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:41,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:41,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404071545] [2024-11-16 08:34:41,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404071545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:41,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779363204] [2024-11-16 08:34:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:41,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:41,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:41,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:41,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 08:34:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:41,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:34:41,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:42,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:42,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779363204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:42,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:42,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:34:42,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115474537] [2024-11-16 08:34:42,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:42,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:34:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:42,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:34:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:34:42,215 INFO L87 Difference]: Start difference. First operand 132693 states and 180000 transitions. Second operand has 11 states, 11 states have (on average 13.909090909090908) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 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 08:34:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:43,049 INFO L93 Difference]: Finished difference Result 276202 states and 375927 transitions. [2024-11-16 08:34:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:34:43,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.909090909090908) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 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 88 [2024-11-16 08:34:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:43,343 INFO L225 Difference]: With dead ends: 276202 [2024-11-16 08:34:43,343 INFO L226 Difference]: Without dead ends: 183068 [2024-11-16 08:34:43,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 166 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:34:43,434 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 999 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:43,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 449 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:34:44,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183068 states. [2024-11-16 08:34:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183068 to 149465. [2024-11-16 08:34:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149465 states, 149464 states have (on average 1.3529545576192261) internal successors, (202218), 149464 states have internal predecessors, (202218), 0 states have call successors, (0), 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 08:34:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149465 states to 149465 states and 202218 transitions. [2024-11-16 08:34:46,195 INFO L78 Accepts]: Start accepts. Automaton has 149465 states and 202218 transitions. Word has length 88 [2024-11-16 08:34:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:46,195 INFO L471 AbstractCegarLoop]: Abstraction has 149465 states and 202218 transitions. [2024-11-16 08:34:46,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.909090909090908) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 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 08:34:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand 149465 states and 202218 transitions. [2024-11-16 08:34:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 08:34:46,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:46,206 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:46,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 08:34:46,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:46,406 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:46,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash 678699799, now seen corresponding path program 1 times [2024-11-16 08:34:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:46,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597811215] [2024-11-16 08:34:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:46,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:46,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:46,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597811215] [2024-11-16 08:34:46,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597811215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:46,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132249508] [2024-11-16 08:34:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:46,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:46,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:46,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:46,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 08:34:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:46,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:34:46,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:46,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:47,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132249508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:47,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:47,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:34:47,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362033706] [2024-11-16 08:34:47,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:47,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:34:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:34:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:34:47,014 INFO L87 Difference]: Start difference. First operand 149465 states and 202218 transitions. Second operand has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 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 08:34:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:48,609 INFO L93 Difference]: Finished difference Result 315588 states and 426604 transitions. [2024-11-16 08:34:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:34:48,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 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 88 [2024-11-16 08:34:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:48,825 INFO L225 Difference]: With dead ends: 315588 [2024-11-16 08:34:48,825 INFO L226 Difference]: Without dead ends: 172221 [2024-11-16 08:34:48,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 166 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:34:48,925 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 1201 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:48,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 498 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:34:49,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172221 states. [2024-11-16 08:34:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172221 to 151568. [2024-11-16 08:34:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151568 states, 151567 states have (on average 1.348182651896521) internal successors, (204340), 151567 states have internal predecessors, (204340), 0 states have call successors, (0), 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 08:34:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151568 states to 151568 states and 204340 transitions. [2024-11-16 08:34:51,768 INFO L78 Accepts]: Start accepts. Automaton has 151568 states and 204340 transitions. Word has length 88 [2024-11-16 08:34:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:51,768 INFO L471 AbstractCegarLoop]: Abstraction has 151568 states and 204340 transitions. [2024-11-16 08:34:51,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 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 08:34:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 151568 states and 204340 transitions. [2024-11-16 08:34:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 08:34:51,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:51,780 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:34:51,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 08:34:51,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:51,981 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:51,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1867824155, now seen corresponding path program 1 times [2024-11-16 08:34:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:51,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813499195] [2024-11-16 08:34:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:51,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813499195] [2024-11-16 08:34:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813499195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127220722] [2024-11-16 08:34:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:52,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:52,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:52,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:34:52,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 08:34:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:52,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 08:34:52,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:52,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:53,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127220722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:53,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:53,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-16 08:34:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479116398] [2024-11-16 08:34:53,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:53,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 08:34:53,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 08:34:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-16 08:34:53,677 INFO L87 Difference]: Start difference. First operand 151568 states and 204340 transitions. Second operand has 23 states, 23 states have (on average 8.869565217391305) internal successors, (204), 22 states have internal predecessors, (204), 0 states have call successors, (0), 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 08:34:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:56,344 INFO L93 Difference]: Finished difference Result 652792 states and 876709 transitions. [2024-11-16 08:34:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 08:34:56,345 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.869565217391305) internal successors, (204), 22 states have internal predecessors, (204), 0 states have call successors, (0), 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 89 [2024-11-16 08:34:56,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:57,091 INFO L225 Difference]: With dead ends: 652792 [2024-11-16 08:34:57,092 INFO L226 Difference]: Without dead ends: 501534