./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/combinations/Problem05_label43+token_ring.06.cil-2.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 d6bcae8fdfc31b6b7d4775dfad537e0ca42e395c3a990a218ee828052c4f57f7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:34:49,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:34:49,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:34:49,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:34:49,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:34:49,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:34:49,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:34:49,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:34:49,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:34:49,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:34:49,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:34:49,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:34:49,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:34:49,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:34:49,756 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:34:49,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:34:49,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:34:49,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:34:49,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:34:49,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:34:49,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:34:49,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:34:49,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:34:49,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:34:49,761 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:34:49,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:34:49,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:34:49,762 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:34:49,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:34:49,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:34:49,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:34:49,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:34:49,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:34:49,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:34:49,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:34:49,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:34:49,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:34:49,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:34:49,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:34:49,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:34:49,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:34:49,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:34:49,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6bcae8fdfc31b6b7d4775dfad537e0ca42e395c3a990a218ee828052c4f57f7 [2024-11-18 15:34:49,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:34:49,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:34:49,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:34:49,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:34:49,987 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:34:49,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-2.c [2024-11-18 15:34:51,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:34:51,715 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:34:51,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-2.c [2024-11-18 15:34:51,755 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83696c08/a86893bf26fb4cabac3ace0d07b993d9/FLAG8742e5564 [2024-11-18 15:34:51,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83696c08/a86893bf26fb4cabac3ace0d07b993d9 [2024-11-18 15:34:51,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:34:51,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:34:51,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:34:51,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:34:51,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:34:51,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:34:51" (1/1) ... [2024-11-18 15:34:51,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b4c056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:51, skipping insertion in model container [2024-11-18 15:34:51,779 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:34:51" (1/1) ... [2024-11-18 15:34:51,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:34:53,269 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/combinations/Problem05_label43+token_ring.06.cil-2.c[381679,381692] [2024-11-18 15:34:53,291 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/combinations/Problem05_label43+token_ring.06.cil-2.c[383339,383352] [2024-11-18 15:34:53,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:34:53,476 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:34:54,056 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/combinations/Problem05_label43+token_ring.06.cil-2.c[381679,381692] [2024-11-18 15:34:54,064 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/combinations/Problem05_label43+token_ring.06.cil-2.c[383339,383352] [2024-11-18 15:34:54,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:34:54,181 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:34:54,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54 WrapperNode [2024-11-18 15:34:54,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:34:54,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:34:54,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:34:54,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:34:54,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,581 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12873 [2024-11-18 15:34:54,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:34:54,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:34:54,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:34:54,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:34:54,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,650 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,710 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]. [2024-11-18 15:34:54,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:54,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:55,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:55,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:34:55,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:34:55,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:34:55,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:34:55,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (1/1) ... [2024-11-18 15:34:55,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:34:55,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:34:55,073 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) [2024-11-18 15:34:55,075 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 [2024-11-18 15:34:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:34:55,109 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:34:55,109 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:34:55,109 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:34:55,110 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:34:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:34:55,110 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:34:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:34:55,111 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:34:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:34:55,111 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:34:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:34:55,111 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:34:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:34:55,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:34:55,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:34:55,219 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:34:55,221 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:35:01,424 INFO L? ?]: Removed 1719 outVars from TransFormulas that were not future-live. [2024-11-18 15:35:01,424 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:35:01,487 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:35:01,488 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-18 15:35:01,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:35:01 BoogieIcfgContainer [2024-11-18 15:35:01,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:35:01,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:35:01,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:35:01,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:35:01,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:34:51" (1/3) ... [2024-11-18 15:35:01,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56069410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:35:01, skipping insertion in model container [2024-11-18 15:35:01,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:54" (2/3) ... [2024-11-18 15:35:01,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56069410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:35:01, skipping insertion in model container [2024-11-18 15:35:01,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:35:01" (3/3) ... [2024-11-18 15:35:01,497 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.06.cil-2.c [2024-11-18 15:35:01,510 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:35:01,511 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:35:01,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:35:01,627 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;@46305f4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:35:01,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:35:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:35:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:01,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:01,649 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:01,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:01,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash -603322071, now seen corresponding path program 1 times [2024-11-18 15:35:01,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:01,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271077422] [2024-11-18 15:35:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:01,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:02,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:02,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271077422] [2024-11-18 15:35:02,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271077422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:02,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:02,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:35:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863415256] [2024-11-18 15:35:02,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:02,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:35:02,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:35:02,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:35:02,118 INFO L87 Difference]: Start difference. First operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:02,385 INFO L93 Difference]: Finished difference Result 4834 states and 8909 transitions. [2024-11-18 15:35:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:35:02,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:02,422 INFO L225 Difference]: With dead ends: 4834 [2024-11-18 15:35:02,423 INFO L226 Difference]: Without dead ends: 2355 [2024-11-18 15:35:02,433 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 [2024-11-18 15:35:02,438 INFO L432 NwaCegarLoop]: 4381 mSDtfsCounter, 350 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 8403 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:02,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 8403 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:35:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2024-11-18 15:35:02,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2024-11-18 15:35:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2327 states have (on average 1.8362698753760207) internal successors, (4273), 2329 states have internal predecessors, (4273), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:35:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4313 transitions. [2024-11-18 15:35:02,607 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4313 transitions. Word has length 112 [2024-11-18 15:35:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:02,608 INFO L471 AbstractCegarLoop]: Abstraction has 2355 states and 4313 transitions. [2024-11-18 15:35:02,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4313 transitions. [2024-11-18 15:35:02,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:02,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:02,613 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:02,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:35:02,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:02,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1634362969, now seen corresponding path program 1 times [2024-11-18 15:35:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96059982] [2024-11-18 15:35:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:02,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:02,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:02,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96059982] [2024-11-18 15:35:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96059982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:02,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:02,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:02,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982757114] [2024-11-18 15:35:02,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:02,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:02,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:02,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:02,878 INFO L87 Difference]: Start difference. First operand 2355 states and 4313 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:03,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:03,478 INFO L93 Difference]: Finished difference Result 2835 states and 5064 transitions. [2024-11-18 15:35:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:03,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:03,491 INFO L225 Difference]: With dead ends: 2835 [2024-11-18 15:35:03,492 INFO L226 Difference]: Without dead ends: 2615 [2024-11-18 15:35:03,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:03,496 INFO L432 NwaCegarLoop]: 4424 mSDtfsCounter, 4603 mSDsluCounter, 13357 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 17781 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:03,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 17781 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:35:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-11-18 15:35:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2585. [2024-11-18 15:35:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2532 states have (on average 1.8131911532385465) internal successors, (4591), 2536 states have internal predecessors, (4591), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-18 15:35:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4672 transitions. [2024-11-18 15:35:03,559 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4672 transitions. Word has length 112 [2024-11-18 15:35:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:03,560 INFO L471 AbstractCegarLoop]: Abstraction has 2585 states and 4672 transitions. [2024-11-18 15:35:03,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:03,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4672 transitions. [2024-11-18 15:35:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:03,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:03,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:03,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:35:03,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:03,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1041629413, now seen corresponding path program 1 times [2024-11-18 15:35:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:03,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831507550] [2024-11-18 15:35:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:03,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:03,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:03,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831507550] [2024-11-18 15:35:03,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831507550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:03,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:03,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573221361] [2024-11-18 15:35:03,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:03,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:03,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:03,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:03,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:03,731 INFO L87 Difference]: Start difference. First operand 2585 states and 4672 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:04,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:04,317 INFO L93 Difference]: Finished difference Result 3524 states and 6140 transitions. [2024-11-18 15:35:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:04,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:04,328 INFO L225 Difference]: With dead ends: 3524 [2024-11-18 15:35:04,328 INFO L226 Difference]: Without dead ends: 3076 [2024-11-18 15:35:04,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:04,334 INFO L432 NwaCegarLoop]: 4364 mSDtfsCounter, 4599 mSDsluCounter, 13206 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 17570 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:04,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 17570 Invalid, 693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:35:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2024-11-18 15:35:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3035. [2024-11-18 15:35:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2936 states have (on average 1.7758855585831064) internal successors, (5214), 2944 states have internal predecessors, (5214), 67 states have call successors, (67), 24 states have call predecessors, (67), 30 states have return successors, (90), 70 states have call predecessors, (90), 67 states have call successors, (90) [2024-11-18 15:35:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 5371 transitions. [2024-11-18 15:35:04,531 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 5371 transitions. Word has length 112 [2024-11-18 15:35:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:04,534 INFO L471 AbstractCegarLoop]: Abstraction has 3035 states and 5371 transitions. [2024-11-18 15:35:04,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 5371 transitions. [2024-11-18 15:35:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:04,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:04,538 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:04,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:35:04,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:04,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash 158120423, now seen corresponding path program 1 times [2024-11-18 15:35:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:04,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158089967] [2024-11-18 15:35:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:04,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:04,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158089967] [2024-11-18 15:35:04,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158089967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:04,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:04,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:04,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871718689] [2024-11-18 15:35:04,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:04,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:04,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:04,733 INFO L87 Difference]: Start difference. First operand 3035 states and 5371 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:05,429 INFO L93 Difference]: Finished difference Result 4963 states and 8421 transitions. [2024-11-18 15:35:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:05,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:05,444 INFO L225 Difference]: With dead ends: 4963 [2024-11-18 15:35:05,445 INFO L226 Difference]: Without dead ends: 4065 [2024-11-18 15:35:05,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:05,450 INFO L432 NwaCegarLoop]: 4416 mSDtfsCounter, 4593 mSDsluCounter, 13321 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 17737 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:05,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 17737 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:35:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2024-11-18 15:35:05,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4003. [2024-11-18 15:35:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3806 states have (on average 1.7277982133473464) internal successors, (6576), 3828 states have internal predecessors, (6576), 127 states have call successors, (127), 48 states have call predecessors, (127), 68 states have return successors, (206), 134 states have call predecessors, (206), 127 states have call successors, (206) [2024-11-18 15:35:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 6909 transitions. [2024-11-18 15:35:05,552 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 6909 transitions. Word has length 112 [2024-11-18 15:35:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:05,553 INFO L471 AbstractCegarLoop]: Abstraction has 4003 states and 6909 transitions. [2024-11-18 15:35:05,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 6909 transitions. [2024-11-18 15:35:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:05,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:05,555 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:05,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:35:05,556 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:05,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 129620133, now seen corresponding path program 1 times [2024-11-18 15:35:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306569746] [2024-11-18 15:35:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:05,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306569746] [2024-11-18 15:35:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306569746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:05,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:05,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048142627] [2024-11-18 15:35:05,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:05,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:05,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:05,661 INFO L87 Difference]: Start difference. First operand 4003 states and 6909 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:06,268 INFO L93 Difference]: Finished difference Result 8094 states and 13531 transitions. [2024-11-18 15:35:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:06,299 INFO L225 Difference]: With dead ends: 8094 [2024-11-18 15:35:06,299 INFO L226 Difference]: Without dead ends: 6228 [2024-11-18 15:35:06,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:06,310 INFO L432 NwaCegarLoop]: 4415 mSDtfsCounter, 4588 mSDsluCounter, 13313 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 17728 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:06,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4602 Valid, 17728 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:35:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2024-11-18 15:35:06,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 6127. [2024-11-18 15:35:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6127 states, 5716 states have (on average 1.6826452064380686) internal successors, (9618), 5784 states have internal predecessors, (9618), 247 states have call successors, (247), 96 states have call predecessors, (247), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-11-18 15:35:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 10399 transitions. [2024-11-18 15:35:06,552 INFO L78 Accepts]: Start accepts. Automaton has 6127 states and 10399 transitions. Word has length 112 [2024-11-18 15:35:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:06,552 INFO L471 AbstractCegarLoop]: Abstraction has 6127 states and 10399 transitions. [2024-11-18 15:35:06,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:06,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6127 states and 10399 transitions. [2024-11-18 15:35:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:06,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:06,557 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:06,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:35:06,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:06,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1810961881, now seen corresponding path program 1 times [2024-11-18 15:35:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:06,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673064181] [2024-11-18 15:35:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:06,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:06,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:06,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673064181] [2024-11-18 15:35:06,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673064181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:06,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:06,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034165195] [2024-11-18 15:35:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:06,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:06,694 INFO L87 Difference]: Start difference. First operand 6127 states and 10399 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:07,341 INFO L93 Difference]: Finished difference Result 15049 states and 25389 transitions. [2024-11-18 15:35:07,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:07,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:07,400 INFO L225 Difference]: With dead ends: 15049 [2024-11-18 15:35:07,400 INFO L226 Difference]: Without dead ends: 11059 [2024-11-18 15:35:07,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:07,420 INFO L432 NwaCegarLoop]: 4412 mSDtfsCounter, 4583 mSDsluCounter, 13297 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4597 SdHoareTripleChecker+Valid, 17709 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:07,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4597 Valid, 17709 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:35:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2024-11-18 15:35:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 10887. [2024-11-18 15:35:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10887 states, 9994 states have (on average 1.6565939563738243) internal successors, (16556), 10208 states have internal predecessors, (16556), 487 states have call successors, (487), 192 states have call predecessors, (487), 404 states have return successors, (1574), 518 states have call predecessors, (1574), 487 states have call successors, (1574) [2024-11-18 15:35:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10887 states to 10887 states and 18617 transitions. [2024-11-18 15:35:07,912 INFO L78 Accepts]: Start accepts. Automaton has 10887 states and 18617 transitions. Word has length 112 [2024-11-18 15:35:07,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:07,912 INFO L471 AbstractCegarLoop]: Abstraction has 10887 states and 18617 transitions. [2024-11-18 15:35:07,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 10887 states and 18617 transitions. [2024-11-18 15:35:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:07,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:07,919 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:07,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:35:07,920 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:07,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash 66101349, now seen corresponding path program 1 times [2024-11-18 15:35:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:07,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591384660] [2024-11-18 15:35:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:08,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:08,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591384660] [2024-11-18 15:35:08,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591384660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:08,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:08,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:08,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475270272] [2024-11-18 15:35:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:08,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:08,023 INFO L87 Difference]: Start difference. First operand 10887 states and 18617 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:08,876 INFO L93 Difference]: Finished difference Result 30832 states and 54099 transitions. [2024-11-18 15:35:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:08,979 INFO L225 Difference]: With dead ends: 30832 [2024-11-18 15:35:08,979 INFO L226 Difference]: Without dead ends: 22082 [2024-11-18 15:35:09,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:09,022 INFO L432 NwaCegarLoop]: 4409 mSDtfsCounter, 4578 mSDsluCounter, 13284 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 17693 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:09,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 17693 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:35:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22082 states. [2024-11-18 15:35:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22082 to 21783. [2024-11-18 15:35:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 19764 states have (on average 1.653612629022465) internal successors, (32682), 20432 states have internal predecessors, (32682), 967 states have call successors, (967), 384 states have call predecessors, (967), 1050 states have return successors, (5190), 1030 states have call predecessors, (5190), 967 states have call successors, (5190) [2024-11-18 15:35:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 38839 transitions. [2024-11-18 15:35:10,284 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 38839 transitions. Word has length 112 [2024-11-18 15:35:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:10,285 INFO L471 AbstractCegarLoop]: Abstraction has 21783 states and 38839 transitions. [2024-11-18 15:35:10,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 38839 transitions. [2024-11-18 15:35:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:10,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:10,300 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:10,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:35:10,300 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:10,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash -704632217, now seen corresponding path program 1 times [2024-11-18 15:35:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:10,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641665582] [2024-11-18 15:35:10,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:10,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641665582] [2024-11-18 15:35:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641665582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:10,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:10,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:10,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600463508] [2024-11-18 15:35:10,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:10,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:10,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:10,415 INFO L87 Difference]: Start difference. First operand 21783 states and 38839 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:12,307 INFO L93 Difference]: Finished difference Result 70395 states and 131730 transitions. [2024-11-18 15:35:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:12,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:12,691 INFO L225 Difference]: With dead ends: 70395 [2024-11-18 15:35:12,692 INFO L226 Difference]: Without dead ends: 50749 [2024-11-18 15:35:12,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:12,756 INFO L432 NwaCegarLoop]: 4405 mSDtfsCounter, 4767 mSDsluCounter, 13261 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 17666 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:12,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 17666 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:35:12,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50749 states. [2024-11-18 15:35:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50749 to 47027. [2024-11-18 15:35:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47027 states, 42334 states have (on average 1.6677847592951291) internal successors, (70604), 44396 states have internal predecessors, (70604), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 2828 states have return successors, (18502), 1990 states have call predecessors, (18502), 1863 states have call successors, (18502) [2024-11-18 15:35:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47027 states to 47027 states and 90969 transitions. [2024-11-18 15:35:15,258 INFO L78 Accepts]: Start accepts. Automaton has 47027 states and 90969 transitions. Word has length 112 [2024-11-18 15:35:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:15,258 INFO L471 AbstractCegarLoop]: Abstraction has 47027 states and 90969 transitions. [2024-11-18 15:35:15,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47027 states and 90969 transitions. [2024-11-18 15:35:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:15,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:15,279 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:15,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:35:15,279 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:15,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:15,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1699325915, now seen corresponding path program 1 times [2024-11-18 15:35:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:15,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228592858] [2024-11-18 15:35:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:15,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:15,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228592858] [2024-11-18 15:35:15,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228592858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:15,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:15,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:15,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231078452] [2024-11-18 15:35:15,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:15,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:15,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:15,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:15,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:15,376 INFO L87 Difference]: Start difference. First operand 47027 states and 90969 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:19,500 INFO L93 Difference]: Finished difference Result 154887 states and 325330 transitions. [2024-11-18 15:35:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:19,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:35:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:20,306 INFO L225 Difference]: With dead ends: 154887 [2024-11-18 15:35:20,307 INFO L226 Difference]: Without dead ends: 109997 [2024-11-18 15:35:20,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:20,422 INFO L432 NwaCegarLoop]: 4402 mSDtfsCounter, 4699 mSDsluCounter, 13241 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 17643 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:20,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4720 Valid, 17643 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:35:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109997 states. [2024-11-18 15:35:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109997 to 104613. [2024-11-18 15:35:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104613 states, 93178 states have (on average 1.6791731953894695) internal successors, (156462), 99486 states have internal predecessors, (156462), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 7842 states have return successors, (69638), 3846 states have call predecessors, (69638), 3591 states have call successors, (69638) [2024-11-18 15:35:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104613 states to 104613 states and 229691 transitions. [2024-11-18 15:35:28,670 INFO L78 Accepts]: Start accepts. Automaton has 104613 states and 229691 transitions. Word has length 112 [2024-11-18 15:35:28,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:28,671 INFO L471 AbstractCegarLoop]: Abstraction has 104613 states and 229691 transitions. [2024-11-18 15:35:28,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:35:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 104613 states and 229691 transitions. [2024-11-18 15:35:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:35:28,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:28,713 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:28,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:35:28,714 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:28,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash 637066595, now seen corresponding path program 1 times [2024-11-18 15:35:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:28,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384261508] [2024-11-18 15:35:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:28,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384261508] [2024-11-18 15:35:28,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384261508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:28,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:28,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363582859] [2024-11-18 15:35:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:28,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:28,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:28,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:28,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:28,802 INFO L87 Difference]: Start difference. First operand 104613 states and 229691 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)