./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.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.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 87c0d05d6e0355591807918f29d7510d5603d16064875313848d28b6b97f865e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:34:36,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:34:36,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:34:36,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:34:36,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:34:36,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:34:36,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:34:36,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:34:36,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:34:36,433 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:34:36,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:34:36,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:34:36,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:34:36,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:34:36,434 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:34:36,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:34:36,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:34:36,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:34:36,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:34:36,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:34:36,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:34:36,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:34:36,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:34:36,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:34:36,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:34:36,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:34:36,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:34:36,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:34:36,439 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:34:36,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:34:36,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:34:36,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:34:36,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:34:36,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:34:36,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:34:36,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:34:36,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:34:36,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:34:36,440 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:34:36,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:34:36,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:34:36,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:34:36,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87c0d05d6e0355591807918f29d7510d5603d16064875313848d28b6b97f865e [2024-11-16 08:34:36,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:34:36,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:34:36,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:34:36,645 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:34:36,645 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:34:36,646 INFO L431 ainManager$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.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:34:37,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:34:38,011 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:34:38,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:34:38,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ccbcdbd/a47efea2250c42b1914f521df92b02f3/FLAG95e4c75ff [2024-11-16 08:34:38,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ccbcdbd/a47efea2250c42b1914f521df92b02f3 [2024-11-16 08:34:38,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:34:38,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:34:38,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:34:38,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:34:38,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:34:38,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d20e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38, skipping insertion in model container [2024-11-16 08:34:38,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:34:38,248 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.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5337,5350] [2024-11-16 08:34:38,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:34:38,285 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:34:38,354 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.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5337,5350] [2024-11-16 08:34:38,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:34:38,389 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:34:38,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38 WrapperNode [2024-11-16 08:34:38,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:34:38,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:34:38,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:34:38,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:34:38,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,427 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 470 [2024-11-16 08:34:38,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:34:38,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:34:38,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:34:38,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:34:38,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,453 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 08:34:38,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,459 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:34:38,465 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:34:38,465 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:34:38,465 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:34:38,465 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (1/1) ... [2024-11-16 08:34:38,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:34:38,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:38,503 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 08:34:38,505 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 08:34:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:34:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:34:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:34:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:34:38,631 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:34:38,633 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:34:39,017 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L349: havoc main_~node4____CPAchecker_TMP_1~0#1; [2024-11-16 08:34:39,017 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L218: havoc main_~node4__m4~0#1; [2024-11-16 08:34:39,017 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L435: havoc main_~node3____CPAchecker_TMP_1~0#1; [2024-11-16 08:34:39,017 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L321: havoc main_~node4____CPAchecker_TMP_0~0#1; [2024-11-16 08:34:39,018 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L521: havoc main_~node2____CPAchecker_TMP_1~0#1; [2024-11-16 08:34:39,018 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L407: havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-16 08:34:39,018 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L607: havoc main_~node1____CPAchecker_TMP_1~0#1; [2024-11-16 08:34:39,018 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L493: havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-16 08:34:39,018 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L163: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-16 08:34:39,018 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L182: havoc main_~node2__m2~0#1; [2024-11-16 08:34:39,018 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L579: havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-16 08:34:39,019 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 08:34:39,019 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L200: havoc main_~node3__m3~0#1; [2024-11-16 08:34:39,040 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-16 08:34:39,041 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:34:39,055 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:34:39,056 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:34:39,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:34:39 BoogieIcfgContainer [2024-11-16 08:34:39,056 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:34:39,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:34:39,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:34:39,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:34:39,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:34:38" (1/3) ... [2024-11-16 08:34:39,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356f0093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:34:39, skipping insertion in model container [2024-11-16 08:34:39,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:38" (2/3) ... [2024-11-16 08:34:39,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356f0093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:34:39, skipping insertion in model container [2024-11-16 08:34:39,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:34:39" (3/3) ... [2024-11-16 08:34:39,062 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-16 08:34:39,073 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:34:39,074 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:34:39,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:34:39,122 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;@73a69b91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:34:39,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:34:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 115 states have (on average 1.6521739130434783) internal successors, (190), 116 states have internal predecessors, (190), 0 states have call successors, (0), 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 08:34:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:34:39,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:39,132 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 08:34:39,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:39,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:39,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1240010555, now seen corresponding path program 1 times [2024-11-16 08:34:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:39,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096909800] [2024-11-16 08:34:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:39,515 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 08:34:39,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:39,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096909800] [2024-11-16 08:34:39,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096909800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:39,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:39,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:39,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700465541] [2024-11-16 08:34:39,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:39,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:39,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:39,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:39,539 INFO L87 Difference]: Start difference. First operand has 117 states, 115 states have (on average 1.6521739130434783) internal successors, (190), 116 states have internal predecessors, (190), 0 states have call successors, (0), 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 08:34:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:39,586 INFO L93 Difference]: Finished difference Result 278 states and 437 transitions. [2024-11-16 08:34:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:39,588 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 08:34:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:39,594 INFO L225 Difference]: With dead ends: 278 [2024-11-16 08:34:39,594 INFO L226 Difference]: Without dead ends: 182 [2024-11-16 08:34:39,597 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 08:34:39,599 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 141 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 417 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 08:34:39,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 417 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-16 08:34:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2024-11-16 08:34:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.4748603351955307) internal successors, (264), 179 states have internal predecessors, (264), 0 states have call successors, (0), 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 08:34:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2024-11-16 08:34:39,636 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 49 [2024-11-16 08:34:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:39,636 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2024-11-16 08:34:39,636 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 08:34:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2024-11-16 08:34:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 08:34:39,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:39,638 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 08:34:39,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:34:39,638 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:39,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash -173413774, now seen corresponding path program 1 times [2024-11-16 08:34:39,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:39,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895164136] [2024-11-16 08:34:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:39,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:39,785 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 08:34:39,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895164136] [2024-11-16 08:34:39,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895164136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:39,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686988542] [2024-11-16 08:34:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:39,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:39,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:39,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:39,787 INFO L87 Difference]: Start difference. First operand 180 states and 264 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 08:34:39,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:39,812 INFO L93 Difference]: Finished difference Result 452 states and 684 transitions. [2024-11-16 08:34:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:39,812 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 08:34:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:39,814 INFO L225 Difference]: With dead ends: 452 [2024-11-16 08:34:39,814 INFO L226 Difference]: Without dead ends: 299 [2024-11-16 08:34:39,816 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 08:34:39,817 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 114 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 364 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 08:34:39,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 364 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-16 08:34:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2024-11-16 08:34:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.5) internal successors, (444), 296 states have internal predecessors, (444), 0 states have call successors, (0), 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 08:34:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 444 transitions. [2024-11-16 08:34:39,848 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 444 transitions. Word has length 50 [2024-11-16 08:34:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:39,849 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 444 transitions. [2024-11-16 08:34:39,849 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 08:34:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 444 transitions. [2024-11-16 08:34:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 08:34:39,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:39,850 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 08:34:39,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:34:39,850 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:39,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:39,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1866202188, now seen corresponding path program 1 times [2024-11-16 08:34:39,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790637413] [2024-11-16 08:34:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:39,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:39,929 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 08:34:39,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:39,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790637413] [2024-11-16 08:34:39,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790637413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:39,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:39,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:39,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944273542] [2024-11-16 08:34:39,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:39,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:39,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:39,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:39,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:39,932 INFO L87 Difference]: Start difference. First operand 297 states and 444 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 08:34:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:39,960 INFO L93 Difference]: Finished difference Result 769 states and 1170 transitions. [2024-11-16 08:34:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:39,961 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 08:34:39,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:39,964 INFO L225 Difference]: With dead ends: 769 [2024-11-16 08:34:39,964 INFO L226 Difference]: Without dead ends: 499 [2024-11-16 08:34:39,965 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 08:34:39,966 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 109 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 349 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 08:34:39,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 349 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:39,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-16 08:34:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2024-11-16 08:34:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.5080645161290323) internal successors, (748), 496 states have internal predecessors, (748), 0 states have call successors, (0), 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 08:34:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 748 transitions. [2024-11-16 08:34:39,993 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 748 transitions. Word has length 51 [2024-11-16 08:34:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:39,993 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 748 transitions. [2024-11-16 08:34:39,993 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 08:34:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 748 transitions. [2024-11-16 08:34:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 08:34:39,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:39,994 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 08:34:39,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:34:39,995 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:39,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:39,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1405266741, now seen corresponding path program 1 times [2024-11-16 08:34:39,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:39,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787038093] [2024-11-16 08:34:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:39,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:40,091 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 08:34:40,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787038093] [2024-11-16 08:34:40,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787038093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:40,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:40,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219834475] [2024-11-16 08:34:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:40,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:40,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:40,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:40,094 INFO L87 Difference]: Start difference. First operand 497 states and 748 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 08:34:40,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:40,118 INFO L93 Difference]: Finished difference Result 1301 states and 1974 transitions. [2024-11-16 08:34:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:40,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 08:34:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:40,121 INFO L225 Difference]: With dead ends: 1301 [2024-11-16 08:34:40,122 INFO L226 Difference]: Without dead ends: 831 [2024-11-16 08:34:40,124 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 08:34:40,126 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 104 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 334 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 08:34:40,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 334 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-11-16 08:34:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 829. [2024-11-16 08:34:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 828 states have (on average 1.502415458937198) internal successors, (1244), 828 states have internal predecessors, (1244), 0 states have call successors, (0), 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 08:34:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1244 transitions. [2024-11-16 08:34:40,154 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1244 transitions. Word has length 52 [2024-11-16 08:34:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:40,155 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1244 transitions. [2024-11-16 08:34:40,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 08:34:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1244 transitions. [2024-11-16 08:34:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 08:34:40,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:40,158 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] [2024-11-16 08:34:40,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:34:40,158 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:40,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1587716819, now seen corresponding path program 1 times [2024-11-16 08:34:40,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:40,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322911424] [2024-11-16 08:34:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:40,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:40,296 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 08:34:40,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:40,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322911424] [2024-11-16 08:34:40,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322911424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:40,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:40,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:40,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8302996] [2024-11-16 08:34:40,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:40,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:40,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:40,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:40,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:40,301 INFO L87 Difference]: Start difference. First operand 829 states and 1244 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 08:34:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:40,417 INFO L93 Difference]: Finished difference Result 4839 states and 7329 transitions. [2024-11-16 08:34:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:40,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-16 08:34:40,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:40,428 INFO L225 Difference]: With dead ends: 4839 [2024-11-16 08:34:40,428 INFO L226 Difference]: Without dead ends: 4037 [2024-11-16 08:34:40,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:34:40,434 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 948 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1390 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 08:34:40,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1390 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:34:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4037 states. [2024-11-16 08:34:40,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4037 to 1629. [2024-11-16 08:34:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1628 states have (on average 1.4914004914004915) internal successors, (2428), 1628 states have internal predecessors, (2428), 0 states have call successors, (0), 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 08:34:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2428 transitions. [2024-11-16 08:34:40,473 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2428 transitions. Word has length 53 [2024-11-16 08:34:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:40,475 INFO L471 AbstractCegarLoop]: Abstraction has 1629 states and 2428 transitions. [2024-11-16 08:34:40,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 08:34:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2428 transitions. [2024-11-16 08:34:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 08:34:40,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:40,477 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] [2024-11-16 08:34:40,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:34:40,477 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:40,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:40,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1051901171, now seen corresponding path program 1 times [2024-11-16 08:34:40,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:40,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697875113] [2024-11-16 08:34:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:40,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:40,653 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 08:34:40,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:40,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697875113] [2024-11-16 08:34:40,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697875113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:40,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:40,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193908113] [2024-11-16 08:34:40,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:40,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:40,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:40,656 INFO L87 Difference]: Start difference. First operand 1629 states and 2428 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 08:34:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:40,738 INFO L93 Difference]: Finished difference Result 7045 states and 10464 transitions. [2024-11-16 08:34:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:40,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-16 08:34:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:40,756 INFO L225 Difference]: With dead ends: 7045 [2024-11-16 08:34:40,756 INFO L226 Difference]: Without dead ends: 5443 [2024-11-16 08:34:40,761 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 08:34:40,763 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 498 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:40,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 538 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:34:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5443 states. [2024-11-16 08:34:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5443 to 5437. [2024-11-16 08:34:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 1.4768211920529801) internal successors, (8028), 5436 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 08:34:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8028 transitions. [2024-11-16 08:34:40,840 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8028 transitions. Word has length 55 [2024-11-16 08:34:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:40,840 INFO L471 AbstractCegarLoop]: Abstraction has 5437 states and 8028 transitions. [2024-11-16 08:34:40,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 08:34:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8028 transitions. [2024-11-16 08:34:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 08:34:40,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:40,843 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 08:34:40,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:34:40,843 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:40,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1516150101, now seen corresponding path program 1 times [2024-11-16 08:34:40,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:40,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221603569] [2024-11-16 08:34:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:40,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:41,086 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 08:34:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221603569] [2024-11-16 08:34:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221603569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:41,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:34:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574815431] [2024-11-16 08:34:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:41,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:34:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:34:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:34:41,088 INFO L87 Difference]: Start difference. First operand 5437 states and 8028 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 08:34:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:41,123 INFO L93 Difference]: Finished difference Result 5823 states and 8541 transitions. [2024-11-16 08:34:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:34:41,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 08:34:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:41,137 INFO L225 Difference]: With dead ends: 5823 [2024-11-16 08:34:41,137 INFO L226 Difference]: Without dead ends: 5821 [2024-11-16 08:34:41,138 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 08:34:41,140 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 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 08:34:41,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:41,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2024-11-16 08:34:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5821. [2024-11-16 08:34:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5821 states, 5820 states have (on average 1.445360824742268) internal successors, (8412), 5820 states have internal predecessors, (8412), 0 states have call successors, (0), 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 08:34:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5821 states to 5821 states and 8412 transitions. [2024-11-16 08:34:41,217 INFO L78 Accepts]: Start accepts. Automaton has 5821 states and 8412 transitions. Word has length 57 [2024-11-16 08:34:41,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:41,218 INFO L471 AbstractCegarLoop]: Abstraction has 5821 states and 8412 transitions. [2024-11-16 08:34:41,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 08:34:41,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5821 states and 8412 transitions. [2024-11-16 08:34:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 08:34:41,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:41,219 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:34:41,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:34:41,220 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:41,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash 391782333, now seen corresponding path program 1 times [2024-11-16 08:34:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:41,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630337675] [2024-11-16 08:34:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:41,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:41,273 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 08:34:41,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630337675] [2024-11-16 08:34:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630337675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:41,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:41,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:41,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223677652] [2024-11-16 08:34:41,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:41,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:41,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:41,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:41,276 INFO L87 Difference]: Start difference. First operand 5821 states and 8412 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:41,316 INFO L93 Difference]: Finished difference Result 14140 states and 20485 transitions. [2024-11-16 08:34:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:41,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 08:34:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:41,342 INFO L225 Difference]: With dead ends: 14140 [2024-11-16 08:34:41,343 INFO L226 Difference]: Without dead ends: 8346 [2024-11-16 08:34:41,353 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 08:34:41,353 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 94 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 324 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 08:34:41,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 324 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8346 states. [2024-11-16 08:34:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8346 to 8344. [2024-11-16 08:34:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8344 states, 8343 states have (on average 1.4434855567541651) internal successors, (12043), 8343 states have internal predecessors, (12043), 0 states have call successors, (0), 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 08:34:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8344 states to 8344 states and 12043 transitions. [2024-11-16 08:34:41,488 INFO L78 Accepts]: Start accepts. Automaton has 8344 states and 12043 transitions. Word has length 58 [2024-11-16 08:34:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:41,488 INFO L471 AbstractCegarLoop]: Abstraction has 8344 states and 12043 transitions. [2024-11-16 08:34:41,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 8344 states and 12043 transitions. [2024-11-16 08:34:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:34:41,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:41,491 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, 1] [2024-11-16 08:34:41,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:34:41,492 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:41,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash 671904161, now seen corresponding path program 1 times [2024-11-16 08:34:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722127981] [2024-11-16 08:34:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:34:41,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:41,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722127981] [2024-11-16 08:34:41,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722127981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:34:41,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196409269] [2024-11-16 08:34:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:41,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:34:41,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:34:41,769 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 08:34:41,770 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 08:34:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:41,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 08:34:41,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:34:42,430 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 08:34:42,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:34:43,013 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 08:34:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196409269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:34:43,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:34:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-16 08:34:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079436790] [2024-11-16 08:34:43,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:34:43,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 08:34:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 08:34:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-16 08:34:43,015 INFO L87 Difference]: Start difference. First operand 8344 states and 12043 transitions. Second operand has 21 states, 21 states have (on average 11.047619047619047) internal successors, (232), 21 states have internal predecessors, (232), 0 states have call successors, (0), 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 08:34:48,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:48,895 INFO L93 Difference]: Finished difference Result 45275 states and 64863 transitions. [2024-11-16 08:34:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-16 08:34:48,896 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.047619047619047) internal successors, (232), 21 states have internal predecessors, (232), 0 states have call successors, (0), 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 08:34:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:48,944 INFO L225 Difference]: With dead ends: 45275 [2024-11-16 08:34:48,945 INFO L226 Difference]: Without dead ends: 36961 [2024-11-16 08:34:48,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6861 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3260, Invalid=15372, Unknown=0, NotChecked=0, Total=18632 [2024-11-16 08:34:48,963 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 7107 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7107 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:48,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7107 Valid, 2565 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 08:34:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36961 states. [2024-11-16 08:34:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36961 to 27742. [2024-11-16 08:34:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27742 states, 27741 states have (on average 1.4244259399444865) internal successors, (39515), 27741 states have internal predecessors, (39515), 0 states have call successors, (0), 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 08:34:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27742 states to 27742 states and 39515 transitions. [2024-11-16 08:34:49,356 INFO L78 Accepts]: Start accepts. Automaton has 27742 states and 39515 transitions. Word has length 81 [2024-11-16 08:34:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:49,356 INFO L471 AbstractCegarLoop]: Abstraction has 27742 states and 39515 transitions. [2024-11-16 08:34:49,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.047619047619047) internal successors, (232), 21 states have internal predecessors, (232), 0 states have call successors, (0), 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 08:34:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 27742 states and 39515 transitions. [2024-11-16 08:34:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:34:49,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:49,361 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 08:34:49,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 08:34:49,561 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 08:34:49,562 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:49,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:49,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1574448672, now seen corresponding path program 1 times [2024-11-16 08:34:49,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:49,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030420689] [2024-11-16 08:34:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:49,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:49,614 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 08:34:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030420689] [2024-11-16 08:34:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030420689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:49,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:49,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342958270] [2024-11-16 08:34:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:49,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:49,616 INFO L87 Difference]: Start difference. First operand 27742 states and 39515 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:49,948 INFO L93 Difference]: Finished difference Result 69333 states and 98446 transitions. [2024-11-16 08:34:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:34:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:50,029 INFO L225 Difference]: With dead ends: 69333 [2024-11-16 08:34:50,029 INFO L226 Difference]: Without dead ends: 46829 [2024-11-16 08:34:50,056 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 08:34:50,057 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 90 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 307 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 08:34:50,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 307 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:50,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46829 states. [2024-11-16 08:34:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46829 to 46827. [2024-11-16 08:34:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46827 states, 46826 states have (on average 1.4062486652714303) internal successors, (65849), 46826 states have internal predecessors, (65849), 0 states have call successors, (0), 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 08:34:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46827 states to 46827 states and 65849 transitions. [2024-11-16 08:34:50,659 INFO L78 Accepts]: Start accepts. Automaton has 46827 states and 65849 transitions. Word has length 82 [2024-11-16 08:34:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:50,660 INFO L471 AbstractCegarLoop]: Abstraction has 46827 states and 65849 transitions. [2024-11-16 08:34:50,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 46827 states and 65849 transitions. [2024-11-16 08:34:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:34:50,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:50,664 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 08:34:50,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:34:50,664 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:50,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash -456938756, now seen corresponding path program 1 times [2024-11-16 08:34:50,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:50,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126868547] [2024-11-16 08:34:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:50,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:50,859 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 08:34:50,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:50,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126868547] [2024-11-16 08:34:50,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126868547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:50,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:50,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437181018] [2024-11-16 08:34:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:50,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:50,860 INFO L87 Difference]: Start difference. First operand 46827 states and 65849 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:51,074 INFO L93 Difference]: Finished difference Result 118364 states and 165738 transitions. [2024-11-16 08:34:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:51,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:34:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:51,284 INFO L225 Difference]: With dead ends: 118364 [2024-11-16 08:34:51,284 INFO L226 Difference]: Without dead ends: 76958 [2024-11-16 08:34:51,310 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 08:34:51,311 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 91 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 326 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 08:34:51,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 326 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76958 states. [2024-11-16 08:34:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76958 to 75110. [2024-11-16 08:34:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75110 states, 75109 states have (on average 1.3881026241861827) internal successors, (104259), 75109 states have internal predecessors, (104259), 0 states have call successors, (0), 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 08:34:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75110 states to 75110 states and 104259 transitions. [2024-11-16 08:34:52,549 INFO L78 Accepts]: Start accepts. Automaton has 75110 states and 104259 transitions. Word has length 82 [2024-11-16 08:34:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:52,549 INFO L471 AbstractCegarLoop]: Abstraction has 75110 states and 104259 transitions. [2024-11-16 08:34:52,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 75110 states and 104259 transitions. [2024-11-16 08:34:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:34:52,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:52,555 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 08:34:52,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:34:52,555 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:52,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash 789032380, now seen corresponding path program 1 times [2024-11-16 08:34:52,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:52,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293959390] [2024-11-16 08:34:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:52,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:52,645 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 08:34:52,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:52,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293959390] [2024-11-16 08:34:52,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293959390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:52,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:52,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672634457] [2024-11-16 08:34:52,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:52,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:52,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:52,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:52,648 INFO L87 Difference]: Start difference. First operand 75110 states and 104259 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 08:34:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:53,191 INFO L93 Difference]: Finished difference Result 185161 states and 258342 transitions. [2024-11-16 08:34:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:53,192 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 82 [2024-11-16 08:34:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:53,525 INFO L225 Difference]: With dead ends: 185161 [2024-11-16 08:34:53,526 INFO L226 Difference]: Without dead ends: 156263 [2024-11-16 08:34:53,563 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 08:34:53,564 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 802 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:53,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 967 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:34:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156263 states. [2024-11-16 08:34:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156263 to 103552. [2024-11-16 08:34:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103552 states, 103551 states have (on average 1.383105909165532) internal successors, (143222), 103551 states have internal predecessors, (143222), 0 states have call successors, (0), 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 08:34:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103552 states to 103552 states and 143222 transitions. [2024-11-16 08:34:55,349 INFO L78 Accepts]: Start accepts. Automaton has 103552 states and 143222 transitions. Word has length 82 [2024-11-16 08:34:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:55,349 INFO L471 AbstractCegarLoop]: Abstraction has 103552 states and 143222 transitions. [2024-11-16 08:34:55,350 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 08:34:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 103552 states and 143222 transitions. [2024-11-16 08:34:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:34:55,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:55,355 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 08:34:55,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:34:55,355 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:55,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:55,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1530597500, now seen corresponding path program 1 times [2024-11-16 08:34:55,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:55,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086665146] [2024-11-16 08:34:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:55,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:55,402 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 08:34:55,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:55,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086665146] [2024-11-16 08:34:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086665146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:55,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:55,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:34:55,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773660557] [2024-11-16 08:34:55,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:55,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:34:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:34:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:34:55,404 INFO L87 Difference]: Start difference. First operand 103552 states and 143222 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:55,718 INFO L93 Difference]: Finished difference Result 178735 states and 246600 transitions. [2024-11-16 08:34:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:34:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:34:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:56,163 INFO L225 Difference]: With dead ends: 178735 [2024-11-16 08:34:56,163 INFO L226 Difference]: Without dead ends: 106821 [2024-11-16 08:34:56,182 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 08:34:56,186 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 95 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 374 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 08:34:56,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 374 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106821 states. [2024-11-16 08:34:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106821 to 94328. [2024-11-16 08:34:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94328 states, 94327 states have (on average 1.3686007187761722) internal successors, (129096), 94327 states have internal predecessors, (129096), 0 states have call successors, (0), 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 08:34:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94328 states to 94328 states and 129096 transitions. [2024-11-16 08:34:57,387 INFO L78 Accepts]: Start accepts. Automaton has 94328 states and 129096 transitions. Word has length 82 [2024-11-16 08:34:57,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:34:57,387 INFO L471 AbstractCegarLoop]: Abstraction has 94328 states and 129096 transitions. [2024-11-16 08:34:57,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:34:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 94328 states and 129096 transitions. [2024-11-16 08:34:57,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:34:57,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:34:57,396 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 08:34:57,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:34:57,396 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:34:57,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:34:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1170469344, now seen corresponding path program 1 times [2024-11-16 08:34:57,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:34:57,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032112825] [2024-11-16 08:34:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:34:57,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:34:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:34:57,504 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 08:34:57,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:34:57,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032112825] [2024-11-16 08:34:57,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032112825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:34:57,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:34:57,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:34:57,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888709333] [2024-11-16 08:34:57,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:34:57,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:34:57,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:34:57,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:34:57,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:34:57,507 INFO L87 Difference]: Start difference. First operand 94328 states and 129096 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 08:34:58,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:34:58,041 INFO L93 Difference]: Finished difference Result 201260 states and 277857 transitions. [2024-11-16 08:34:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:34:58,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 08:34:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:34:58,245 INFO L225 Difference]: With dead ends: 201260 [2024-11-16 08:34:58,245 INFO L226 Difference]: Without dead ends: 170346 [2024-11-16 08:34:58,311 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 08:34:58,312 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 810 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:34:58,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1085 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:34:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170346 states. [2024-11-16 08:34:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170346 to 124667. [2024-11-16 08:34:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124667 states, 124666 states have (on average 1.3663869860266633) internal successors, (170342), 124666 states have internal predecessors, (170342), 0 states have call successors, (0), 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 08:35:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124667 states to 124667 states and 170342 transitions. [2024-11-16 08:35:00,025 INFO L78 Accepts]: Start accepts. Automaton has 124667 states and 170342 transitions. Word has length 82 [2024-11-16 08:35:00,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:35:00,025 INFO L471 AbstractCegarLoop]: Abstraction has 124667 states and 170342 transitions. [2024-11-16 08:35:00,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 08:35:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 124667 states and 170342 transitions. [2024-11-16 08:35:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:35:00,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:35:00,030 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 08:35:00,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:35:00,031 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:35:00,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:35:00,031 INFO L85 PathProgramCache]: Analyzing trace with hash 234053308, now seen corresponding path program 1 times [2024-11-16 08:35:00,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:35:00,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281423286] [2024-11-16 08:35:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:35:00,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:35:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:35:00,108 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 08:35:00,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:35:00,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281423286] [2024-11-16 08:35:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281423286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:35:00,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:35:00,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:35:00,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712560888] [2024-11-16 08:35:00,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:35:00,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:35:00,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:35:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:35:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:35:00,110 INFO L87 Difference]: Start difference. First operand 124667 states and 170342 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 08:35:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:35:00,970 INFO L93 Difference]: Finished difference Result 234068 states and 322525 transitions. [2024-11-16 08:35:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:35:00,970 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 08:35:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:35:01,220 INFO L225 Difference]: With dead ends: 234068 [2024-11-16 08:35:01,220 INFO L226 Difference]: Without dead ends: 200730 [2024-11-16 08:35:01,265 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 08:35:01,265 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 811 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:35:01,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 964 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:35:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200730 states. [2024-11-16 08:35:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200730 to 148662. [2024-11-16 08:35:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148662 states, 148661 states have (on average 1.3653749133935598) internal successors, (202978), 148661 states have internal predecessors, (202978), 0 states have call successors, (0), 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 08:35:03,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148662 states to 148662 states and 202978 transitions. [2024-11-16 08:35:03,612 INFO L78 Accepts]: Start accepts. Automaton has 148662 states and 202978 transitions. Word has length 82 [2024-11-16 08:35:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:35:03,612 INFO L471 AbstractCegarLoop]: Abstraction has 148662 states and 202978 transitions. [2024-11-16 08:35:03,613 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 08:35:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 148662 states and 202978 transitions. [2024-11-16 08:35:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 08:35:03,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:35:03,617 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] [2024-11-16 08:35:03,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 08:35:03,618 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:35:03,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:35:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1332731475, now seen corresponding path program 1 times [2024-11-16 08:35:03,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:35:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560831288] [2024-11-16 08:35:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:35:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:35:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:35:03,693 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 08:35:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:35:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560831288] [2024-11-16 08:35:03,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560831288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:35:03,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:35:03,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:35:03,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30068423] [2024-11-16 08:35:03,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:35:03,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:35:03,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:35:03,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:35:03,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:35:03,695 INFO L87 Difference]: Start difference. First operand 148662 states and 202978 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 08:35:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:35:04,822 INFO L93 Difference]: Finished difference Result 237556 states and 326594 transitions. [2024-11-16 08:35:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:35:04,825 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 83 [2024-11-16 08:35:04,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:35:05,092 INFO L225 Difference]: With dead ends: 237556 [2024-11-16 08:35:05,092 INFO L226 Difference]: Without dead ends: 218882 [2024-11-16 08:35:05,123 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 08:35:05,125 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 833 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:35:05,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 967 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:35:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218882 states. [2024-11-16 08:35:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218882 to 166879. [2024-11-16 08:35:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166879 states, 166878 states have (on average 1.3653387504644112) internal successors, (227845), 166878 states have internal predecessors, (227845), 0 states have call successors, (0), 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 08:35:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166879 states to 166879 states and 227845 transitions. [2024-11-16 08:35:07,390 INFO L78 Accepts]: Start accepts. Automaton has 166879 states and 227845 transitions. Word has length 83 [2024-11-16 08:35:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:35:07,390 INFO L471 AbstractCegarLoop]: Abstraction has 166879 states and 227845 transitions. [2024-11-16 08:35:07,390 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 08:35:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 166879 states and 227845 transitions. [2024-11-16 08:35:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 08:35:07,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:35:07,398 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] [2024-11-16 08:35:07,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 08:35:07,398 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:35:07,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:35:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1384850407, now seen corresponding path program 1 times [2024-11-16 08:35:07,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:35:07,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281660814] [2024-11-16 08:35:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:35:07,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:35:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:35:07,454 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 08:35:07,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:35:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281660814] [2024-11-16 08:35:07,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281660814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:35:07,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:35:07,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:35:07,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244877097] [2024-11-16 08:35:07,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:35:07,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:35:07,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:35:07,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:35:07,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:35:07,456 INFO L87 Difference]: Start difference. First operand 166879 states and 227845 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 08:35:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:35:09,148 INFO L93 Difference]: Finished difference Result 412745 states and 560663 transitions. [2024-11-16 08:35:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:35:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-11-16 08:35:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:35:09,500 INFO L225 Difference]: With dead ends: 412745 [2024-11-16 08:35:09,500 INFO L226 Difference]: Without dead ends: 264873 [2024-11-16 08:35:09,564 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 08:35:09,565 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 90 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 372 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 08:35:09,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 372 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:35:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264873 states. [2024-11-16 08:35:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264873 to 249608. [2024-11-16 08:35:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249608 states, 249607 states have (on average 1.3456954332210234) internal successors, (335895), 249607 states have internal predecessors, (335895), 0 states have call successors, (0), 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 08:35:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249608 states to 249608 states and 335895 transitions. [2024-11-16 08:35:13,049 INFO L78 Accepts]: Start accepts. Automaton has 249608 states and 335895 transitions. Word has length 86 [2024-11-16 08:35:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:35:13,049 INFO L471 AbstractCegarLoop]: Abstraction has 249608 states and 335895 transitions. [2024-11-16 08:35:13,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 08:35:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 249608 states and 335895 transitions. [2024-11-16 08:35:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 08:35:13,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:35:13,058 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 08:35:13,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:35:13,059 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:35:13,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:35:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2081386217, now seen corresponding path program 1 times [2024-11-16 08:35:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:35:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264859931] [2024-11-16 08:35:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:35:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:35:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:35:13,169 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 08:35:13,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:35:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264859931] [2024-11-16 08:35:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264859931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:35:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894314387] [2024-11-16 08:35:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:35:13,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:35:13,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:35:13,173 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 08:35:13,174 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 08:35:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:35:13,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:35:13,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:35:13,475 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 08:35:13,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:35:13,565 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 08:35:13,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894314387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:35:13,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:35:13,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:35:13,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006846398] [2024-11-16 08:35:13,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:35:13,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:35:13,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:35:13,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:35:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:35:13,566 INFO L87 Difference]: Start difference. First operand 249608 states and 335895 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 08:35:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:35:15,948 INFO L93 Difference]: Finished difference Result 673006 states and 912478 transitions. [2024-11-16 08:35:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:35:15,949 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 08:35:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:35:16,599 INFO L225 Difference]: With dead ends: 673006 [2024-11-16 08:35:16,599 INFO L226 Difference]: Without dead ends: 434549 [2024-11-16 08:35:16,755 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 08:35:16,756 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 1052 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:35:16,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 452 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:35:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434549 states. [2024-11-16 08:35:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434549 to 285519. [2024-11-16 08:35:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285519 states, 285518 states have (on average 1.3489237105891747) internal successors, (385142), 285518 states have internal predecessors, (385142), 0 states have call successors, (0), 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 08:35:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285519 states to 285519 states and 385142 transitions. [2024-11-16 08:35:21,773 INFO L78 Accepts]: Start accepts. Automaton has 285519 states and 385142 transitions. Word has length 88 [2024-11-16 08:35:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:35:21,774 INFO L471 AbstractCegarLoop]: Abstraction has 285519 states and 385142 transitions. [2024-11-16 08:35:21,774 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 08:35:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 285519 states and 385142 transitions. [2024-11-16 08:35:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 08:35:21,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:35:21,782 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 08:35:21,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 08:35:21,982 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 08:35:21,983 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:35:21,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:35:21,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1761016041, now seen corresponding path program 1 times [2024-11-16 08:35:21,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:35:21,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496812018] [2024-11-16 08:35:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:35:21,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:35:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:35:22,069 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 08:35:22,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:35:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496812018] [2024-11-16 08:35:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496812018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:35:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260441472] [2024-11-16 08:35:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:35:22,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:35:22,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:35:22,071 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 08:35:22,073 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 08:35:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:35:22,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:35:22,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:35:22,347 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 08:35:22,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:35:22,426 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 08:35:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260441472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:35:22,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:35:22,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:35:22,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797230141] [2024-11-16 08:35:22,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:35:22,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:35:22,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:35:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:35:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:35:22,427 INFO L87 Difference]: Start difference. First operand 285519 states and 385142 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)