./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.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_label42+token_ring.05.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 52ae6c88c77f2a2d1ba84720becde4fbcf955211b08c092cae514b34c6358b12 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:32:34,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:32:34,444 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:32:34,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:32:34,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:32:34,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:32:34,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:32:34,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:32:34,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:32:34,486 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:32:34,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:32:34,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:32:34,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:32:34,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:32:34,487 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:32:34,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:32:34,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:32:34,491 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:32:34,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:32:34,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:32:34,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:32:34,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:32:34,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:32:34,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:32:34,493 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:32:34,494 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:32:34,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:32:34,494 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:32:34,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:32:34,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:32:34,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:32:34,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:32:34,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:32:34,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:32:34,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:32:34,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:32:34,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:32:34,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:32:34,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:32:34,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:32:34,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:32:34,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:32:34,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ae6c88c77f2a2d1ba84720becde4fbcf955211b08c092cae514b34c6358b12 [2024-11-18 15:32:34,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:32:34,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:32:34,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:32:34,853 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:32:34,856 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:32:34,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.cil-2.c [2024-11-18 15:32:36,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:32:37,005 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:32:37,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.cil-2.c [2024-11-18 15:32:37,074 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a92fb3eac/5a2cdd2baa73442e9b8fa8ef4c8064e4/FLAG383c94be8 [2024-11-18 15:32:37,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a92fb3eac/5a2cdd2baa73442e9b8fa8ef4c8064e4 [2024-11-18 15:32:37,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:32:37,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:32:37,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:32:37,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:32:37,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:32:37,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:32:37" (1/1) ... [2024-11-18 15:32:37,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c616336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:37, skipping insertion in model container [2024-11-18 15:32:37,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:32:37" (1/1) ... [2024-11-18 15:32:37,667 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:32:39,492 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_label42+token_ring.05.cil-2.c[378560,378573] [2024-11-18 15:32:39,521 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_label42+token_ring.05.cil-2.c[383339,383352] [2024-11-18 15:32:39,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:32:39,709 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:32:40,534 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_label42+token_ring.05.cil-2.c[378560,378573] [2024-11-18 15:32:40,542 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_label42+token_ring.05.cil-2.c[383339,383352] [2024-11-18 15:32:40,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:32:40,621 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:32:40,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40 WrapperNode [2024-11-18 15:32:40,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:32:40,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:32:40,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:32:40,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:32:40,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:40,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,209 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12819 [2024-11-18 15:32:41,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:32:41,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:32:41,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:32:41,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:32:41,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,393 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 15:32:41,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:41,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:42,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:32:42,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:32:42,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:32:42,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:32:42,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (1/1) ... [2024-11-18 15:32:42,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:32:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:32:42,054 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 15:32:42,060 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 15:32:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:32:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:32:42,108 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:32:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:32:42,110 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:32:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:32:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:32:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 15:32:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 15:32:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:32:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:32:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:32:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:32:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:32:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:32:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:32:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:32:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:32:42,251 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:32:42,254 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:32:50,106 INFO L? ?]: Removed 1717 outVars from TransFormulas that were not future-live. [2024-11-18 15:32:50,107 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:32:50,173 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:32:50,175 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-18 15:32:50,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:32:50 BoogieIcfgContainer [2024-11-18 15:32:50,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:32:50,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:32:50,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:32:50,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:32:50,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:32:37" (1/3) ... [2024-11-18 15:32:50,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d87901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:32:50, skipping insertion in model container [2024-11-18 15:32:50,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:40" (2/3) ... [2024-11-18 15:32:50,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d87901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:32:50, skipping insertion in model container [2024-11-18 15:32:50,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:32:50" (3/3) ... [2024-11-18 15:32:50,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.05.cil-2.c [2024-11-18 15:32:50,203 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:32:50,203 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:32:50,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:32:50,338 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;@193eb65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:32:50,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:32:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 2404 states, 2373 states have (on average 1.8508217446270543) internal successors, (4392), 2378 states have internal predecessors, (4392), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 15:32:50,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:32:50,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:50,373 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] [2024-11-18 15:32:50,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:50,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash 528623418, now seen corresponding path program 1 times [2024-11-18 15:32:50,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:50,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239066661] [2024-11-18 15:32:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:50,763 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 15:32:50,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:50,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239066661] [2024-11-18 15:32:50,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239066661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:50,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:50,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:32:50,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786202065] [2024-11-18 15:32:50,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:50,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:32:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:50,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:32:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:32:50,812 INFO L87 Difference]: Start difference. First operand has 2404 states, 2373 states have (on average 1.8508217446270543) internal successors, (4392), 2378 states have internal predecessors, (4392), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:51,019 INFO L93 Difference]: Finished difference Result 4799 states and 8853 transitions. [2024-11-18 15:32:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:32:51,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:32:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:51,053 INFO L225 Difference]: With dead ends: 4799 [2024-11-18 15:32:51,054 INFO L226 Difference]: Without dead ends: 2336 [2024-11-18 15:32:51,066 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 15:32:51,070 INFO L432 NwaCegarLoop]: 4351 mSDtfsCounter, 322 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 8373 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 15:32:51,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 8373 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:32:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2024-11-18 15:32:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2024-11-18 15:32:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2307 states have (on average 1.8391850888599914) internal successors, (4243), 2310 states have internal predecessors, (4243), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-18 15:32:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 4283 transitions. [2024-11-18 15:32:51,213 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 4283 transitions. Word has length 102 [2024-11-18 15:32:51,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:51,215 INFO L471 AbstractCegarLoop]: Abstraction has 2336 states and 4283 transitions. [2024-11-18 15:32:51,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 4283 transitions. [2024-11-18 15:32:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:32:51,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:51,221 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] [2024-11-18 15:32:51,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:32:51,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:51,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1825761864, now seen corresponding path program 1 times [2024-11-18 15:32:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:51,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517487351] [2024-11-18 15:32:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:51,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:51,502 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 15:32:51,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:51,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517487351] [2024-11-18 15:32:51,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517487351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:51,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:51,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:32:51,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944531883] [2024-11-18 15:32:51,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:51,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:32:51,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:32:51,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:32:51,510 INFO L87 Difference]: Start difference. First operand 2336 states and 4283 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:52,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:52,071 INFO L93 Difference]: Finished difference Result 2760 states and 4935 transitions. [2024-11-18 15:32:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:32:52,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:32:52,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:52,086 INFO L225 Difference]: With dead ends: 2760 [2024-11-18 15:32:52,087 INFO L226 Difference]: Without dead ends: 2558 [2024-11-18 15:32:52,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:52,091 INFO L432 NwaCegarLoop]: 4212 mSDtfsCounter, 4533 mSDsluCounter, 8553 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4546 SdHoareTripleChecker+Valid, 12765 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:52,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4546 Valid, 12765 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2024-11-18 15:32:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2541. [2024-11-18 15:32:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2491 states have (on average 1.8177438779606583) internal successors, (4528), 2495 states have internal predecessors, (4528), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2024-11-18 15:32:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 4597 transitions. [2024-11-18 15:32:52,174 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 4597 transitions. Word has length 102 [2024-11-18 15:32:52,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:52,175 INFO L471 AbstractCegarLoop]: Abstraction has 2541 states and 4597 transitions. [2024-11-18 15:32:52,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 4597 transitions. [2024-11-18 15:32:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:32:52,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:52,178 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] [2024-11-18 15:32:52,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:32:52,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:52,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash 785390260, now seen corresponding path program 1 times [2024-11-18 15:32:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:52,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155157745] [2024-11-18 15:32:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:52,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:52,410 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 15:32:52,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155157745] [2024-11-18 15:32:52,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155157745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:52,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:52,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902747312] [2024-11-18 15:32:52,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:52,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:52,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:52,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:52,415 INFO L87 Difference]: Start difference. First operand 2541 states and 4597 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:53,248 INFO L93 Difference]: Finished difference Result 3205 states and 5624 transitions. [2024-11-18 15:32:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:53,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:32:53,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:53,269 INFO L225 Difference]: With dead ends: 3205 [2024-11-18 15:32:53,270 INFO L226 Difference]: Without dead ends: 2798 [2024-11-18 15:32:53,273 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 15:32:53,274 INFO L432 NwaCegarLoop]: 4385 mSDtfsCounter, 4528 mSDsluCounter, 13153 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4541 SdHoareTripleChecker+Valid, 17538 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:53,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4541 Valid, 17538 Invalid, 662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:32:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2024-11-18 15:32:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2733. [2024-11-18 15:32:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2662 states have (on average 1.7982719759579264) internal successors, (4787), 2667 states have internal predecessors, (4787), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2024-11-18 15:32:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4887 transitions. [2024-11-18 15:32:53,365 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4887 transitions. Word has length 102 [2024-11-18 15:32:53,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:53,367 INFO L471 AbstractCegarLoop]: Abstraction has 2733 states and 4887 transitions. [2024-11-18 15:32:53,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4887 transitions. [2024-11-18 15:32:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:32:53,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:53,372 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] [2024-11-18 15:32:53,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:32:53,373 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:53,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1633094218, now seen corresponding path program 1 times [2024-11-18 15:32:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:53,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798817697] [2024-11-18 15:32:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:53,522 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 15:32:53,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:53,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798817697] [2024-11-18 15:32:53,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798817697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:53,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:53,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:53,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369562169] [2024-11-18 15:32:53,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:53,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:53,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:53,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:53,526 INFO L87 Difference]: Start difference. First operand 2733 states and 4887 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:54,109 INFO L93 Difference]: Finished difference Result 3801 states and 6533 transitions. [2024-11-18 15:32:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:54,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:32:54,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:54,123 INFO L225 Difference]: With dead ends: 3801 [2024-11-18 15:32:54,123 INFO L226 Difference]: Without dead ends: 3202 [2024-11-18 15:32:54,126 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 15:32:54,127 INFO L432 NwaCegarLoop]: 4377 mSDtfsCounter, 4520 mSDsluCounter, 13131 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4533 SdHoareTripleChecker+Valid, 17508 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:54,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4533 Valid, 17508 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2024-11-18 15:32:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3135. [2024-11-18 15:32:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 3020 states have (on average 1.766225165562914) internal successors, (5334), 3029 states have internal predecessors, (5334), 77 states have call successors, (77), 31 states have call predecessors, (77), 36 states have return successors, (91), 78 states have call predecessors, (91), 75 states have call successors, (91) [2024-11-18 15:32:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 5502 transitions. [2024-11-18 15:32:54,233 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 5502 transitions. Word has length 102 [2024-11-18 15:32:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:54,233 INFO L471 AbstractCegarLoop]: Abstraction has 3135 states and 5502 transitions. [2024-11-18 15:32:54,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 5502 transitions. [2024-11-18 15:32:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:32:54,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:54,237 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] [2024-11-18 15:32:54,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:32:54,238 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:54,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:54,238 INFO L85 PathProgramCache]: Analyzing trace with hash -308238024, now seen corresponding path program 1 times [2024-11-18 15:32:54,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:54,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912590032] [2024-11-18 15:32:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:54,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:54,371 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 15:32:54,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912590032] [2024-11-18 15:32:54,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912590032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:54,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:54,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:54,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793870688] [2024-11-18 15:32:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:54,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:54,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:54,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:54,376 INFO L87 Difference]: Start difference. First operand 3135 states and 5502 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:54,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:54,967 INFO L93 Difference]: Finished difference Result 5071 states and 8510 transitions. [2024-11-18 15:32:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:54,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:32:54,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:54,987 INFO L225 Difference]: With dead ends: 5071 [2024-11-18 15:32:54,988 INFO L226 Difference]: Without dead ends: 4070 [2024-11-18 15:32:54,992 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 15:32:54,993 INFO L432 NwaCegarLoop]: 4374 mSDtfsCounter, 4515 mSDsluCounter, 13122 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4528 SdHoareTripleChecker+Valid, 17496 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:54,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4528 Valid, 17496 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:54,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2024-11-18 15:32:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3990. [2024-11-18 15:32:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3990 states, 3781 states have (on average 1.7217667283787357) internal successors, (6510), 3804 states have internal predecessors, (6510), 133 states have call successors, (133), 55 states have call predecessors, (133), 74 states have return successors, (195), 138 states have call predecessors, (195), 131 states have call successors, (195) [2024-11-18 15:32:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 6838 transitions. [2024-11-18 15:32:55,130 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 6838 transitions. Word has length 102 [2024-11-18 15:32:55,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:55,130 INFO L471 AbstractCegarLoop]: Abstraction has 3990 states and 6838 transitions. [2024-11-18 15:32:55,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:55,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 6838 transitions. [2024-11-18 15:32:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:32:55,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:55,133 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] [2024-11-18 15:32:55,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:32:55,133 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:55,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1258519926, now seen corresponding path program 1 times [2024-11-18 15:32:55,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:55,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085700533] [2024-11-18 15:32:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:55,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:55,249 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 15:32:55,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:55,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085700533] [2024-11-18 15:32:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085700533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:55,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83792009] [2024-11-18 15:32:55,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:55,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:55,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:55,256 INFO L87 Difference]: Start difference. First operand 3990 states and 6838 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:55,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:55,927 INFO L93 Difference]: Finished difference Result 7796 states and 12876 transitions. [2024-11-18 15:32:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:55,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:32:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:55,955 INFO L225 Difference]: With dead ends: 7796 [2024-11-18 15:32:55,956 INFO L226 Difference]: Without dead ends: 5940 [2024-11-18 15:32:55,963 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 15:32:55,965 INFO L432 NwaCegarLoop]: 4371 mSDtfsCounter, 4510 mSDsluCounter, 13113 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4523 SdHoareTripleChecker+Valid, 17484 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:55,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4523 Valid, 17484 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:32:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2024-11-18 15:32:56,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5835. [2024-11-18 15:32:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5835 states, 5420 states have (on average 1.674169741697417) internal successors, (9074), 5489 states have internal predecessors, (9074), 245 states have call successors, (245), 103 states have call predecessors, (245), 168 states have return successors, (499), 258 states have call predecessors, (499), 243 states have call successors, (499) [2024-11-18 15:32:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 9818 transitions. [2024-11-18 15:32:56,272 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 9818 transitions. Word has length 102 [2024-11-18 15:32:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:56,272 INFO L471 AbstractCegarLoop]: Abstraction has 5835 states and 9818 transitions. [2024-11-18 15:32:56,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 9818 transitions. [2024-11-18 15:32:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:32:56,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:56,276 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] [2024-11-18 15:32:56,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:32:56,276 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:56,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:56,277 INFO L85 PathProgramCache]: Analyzing trace with hash 200681848, now seen corresponding path program 1 times [2024-11-18 15:32:56,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:56,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046935892] [2024-11-18 15:32:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:56,396 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 15:32:56,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:56,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046935892] [2024-11-18 15:32:56,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046935892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:56,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:56,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813942273] [2024-11-18 15:32:56,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:56,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:56,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:56,398 INFO L87 Difference]: Start difference. First operand 5835 states and 9818 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:57,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:57,139 INFO L93 Difference]: Finished difference Result 14367 states and 23783 transitions. [2024-11-18 15:32:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:57,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:32:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:57,206 INFO L225 Difference]: With dead ends: 14367 [2024-11-18 15:32:57,206 INFO L226 Difference]: Without dead ends: 10666 [2024-11-18 15:32:57,228 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 15:32:57,229 INFO L432 NwaCegarLoop]: 4219 mSDtfsCounter, 4695 mSDsluCounter, 12747 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4714 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:57,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4714 Valid, 16966 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10666 states. [2024-11-18 15:32:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10666 to 9828. [2024-11-18 15:32:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9828 states, 8963 states have (on average 1.6402990070288965) internal successors, (14702), 9178 states have internal predecessors, (14702), 453 states have call successors, (453), 199 states have call predecessors, (453), 410 states have return successors, (1475), 482 states have call predecessors, (1475), 451 states have call successors, (1475) [2024-11-18 15:32:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9828 states to 9828 states and 16630 transitions. [2024-11-18 15:32:57,683 INFO L78 Accepts]: Start accepts. Automaton has 9828 states and 16630 transitions. Word has length 102 [2024-11-18 15:32:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:57,685 INFO L471 AbstractCegarLoop]: Abstraction has 9828 states and 16630 transitions. [2024-11-18 15:32:57,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 9828 states and 16630 transitions. [2024-11-18 15:32:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:32:57,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:57,694 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] [2024-11-18 15:32:57,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:32:57,694 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:57,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash -941820618, now seen corresponding path program 1 times [2024-11-18 15:32:57,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:57,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163716801] [2024-11-18 15:32:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:57,987 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 15:32:57,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:57,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163716801] [2024-11-18 15:32:57,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163716801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:57,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:57,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:57,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067204256] [2024-11-18 15:32:57,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:57,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:57,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:57,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:57,990 INFO L87 Difference]: Start difference. First operand 9828 states and 16630 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:59,183 INFO L93 Difference]: Finished difference Result 27698 states and 47781 transitions. [2024-11-18 15:32:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:32:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:59,292 INFO L225 Difference]: With dead ends: 27698 [2024-11-18 15:32:59,292 INFO L226 Difference]: Without dead ends: 20004 [2024-11-18 15:32:59,335 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 15:32:59,337 INFO L432 NwaCegarLoop]: 4362 mSDtfsCounter, 4542 mSDsluCounter, 13081 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4554 SdHoareTripleChecker+Valid, 17443 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:59,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4554 Valid, 17443 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:32:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20004 states. [2024-11-18 15:33:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20004 to 18337. [2024-11-18 15:33:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18337 states, 16426 states have (on average 1.6212102763910874) internal successors, (26630), 17095 states have internal predecessors, (26630), 853 states have call successors, (853), 391 states have call predecessors, (853), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2024-11-18 15:33:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18337 states to 18337 states and 32430 transitions. [2024-11-18 15:33:00,859 INFO L78 Accepts]: Start accepts. Automaton has 18337 states and 32430 transitions. Word has length 102 [2024-11-18 15:33:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:00,859 INFO L471 AbstractCegarLoop]: Abstraction has 18337 states and 32430 transitions. [2024-11-18 15:33:00,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 18337 states and 32430 transitions. [2024-11-18 15:33:00,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:33:00,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:00,870 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] [2024-11-18 15:33:00,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:33:00,870 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:00,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:00,871 INFO L85 PathProgramCache]: Analyzing trace with hash -701580872, now seen corresponding path program 1 times [2024-11-18 15:33:00,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:00,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674152311] [2024-11-18 15:33:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:00,982 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 15:33:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:00,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674152311] [2024-11-18 15:33:00,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674152311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:00,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:00,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:00,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808217682] [2024-11-18 15:33:00,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:00,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:00,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:00,989 INFO L87 Difference]: Start difference. First operand 18337 states and 32430 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:03,006 INFO L93 Difference]: Finished difference Result 56177 states and 105403 transitions. [2024-11-18 15:33:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:03,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:33:03,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:03,240 INFO L225 Difference]: With dead ends: 56177 [2024-11-18 15:33:03,241 INFO L226 Difference]: Without dead ends: 39974 [2024-11-18 15:33:03,311 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 15:33:03,314 INFO L432 NwaCegarLoop]: 4360 mSDtfsCounter, 4599 mSDsluCounter, 13075 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4618 SdHoareTripleChecker+Valid, 17435 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:03,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4618 Valid, 17435 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:33:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39974 states. [2024-11-18 15:33:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39974 to 37766. [2024-11-18 15:33:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37766 states, 33309 states have (on average 1.6176408778408238) internal successors, (53882), 35372 states have internal predecessors, (53882), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 2834 states have return successors, (18003), 1746 states have call predecessors, (18003), 1619 states have call successors, (18003) [2024-11-18 15:33:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37766 states to 37766 states and 73506 transitions. [2024-11-18 15:33:06,045 INFO L78 Accepts]: Start accepts. Automaton has 37766 states and 73506 transitions. Word has length 102 [2024-11-18 15:33:06,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:06,048 INFO L471 AbstractCegarLoop]: Abstraction has 37766 states and 73506 transitions. [2024-11-18 15:33:06,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 37766 states and 73506 transitions. [2024-11-18 15:33:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:33:06,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:06,068 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] [2024-11-18 15:33:06,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:33:06,068 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:06,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash 137452790, now seen corresponding path program 1 times [2024-11-18 15:33:06,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:06,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416580404] [2024-11-18 15:33:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:06,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:06,184 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 15:33:06,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:06,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416580404] [2024-11-18 15:33:06,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416580404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:06,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:06,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814046560] [2024-11-18 15:33:06,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:06,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:06,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:06,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:06,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:06,186 INFO L87 Difference]: Start difference. First operand 37766 states and 73506 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:10,317 INFO L93 Difference]: Finished difference Result 120524 states and 260505 transitions. [2024-11-18 15:33:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:10,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:33:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:10,975 INFO L225 Difference]: With dead ends: 120524 [2024-11-18 15:33:10,976 INFO L226 Difference]: Without dead ends: 84892 [2024-11-18 15:33:11,308 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 15:33:11,309 INFO L432 NwaCegarLoop]: 4357 mSDtfsCounter, 4564 mSDsluCounter, 13066 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 17423 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:11,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4583 Valid, 17423 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 15:33:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84892 states. [2024-11-18 15:33:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84892 to 81535. [2024-11-18 15:33:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81535 states, 70592 states have (on average 1.615282184950136) internal successors, (114026), 76901 states have internal predecessors, (114026), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 7848 states have return successors, (68627), 3346 states have call predecessors, (68627), 3091 states have call successors, (68627) [2024-11-18 15:33:17,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81535 states to 81535 states and 185746 transitions. [2024-11-18 15:33:17,851 INFO L78 Accepts]: Start accepts. Automaton has 81535 states and 185746 transitions. Word has length 102 [2024-11-18 15:33:17,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:17,852 INFO L471 AbstractCegarLoop]: Abstraction has 81535 states and 185746 transitions. [2024-11-18 15:33:17,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 81535 states and 185746 transitions. [2024-11-18 15:33:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:33:17,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:17,900 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] [2024-11-18 15:33:17,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:33:17,901 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:17,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 164518392, now seen corresponding path program 1 times [2024-11-18 15:33:17,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:17,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758514000] [2024-11-18 15:33:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:18,024 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 15:33:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758514000] [2024-11-18 15:33:18,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758514000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:18,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:18,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:33:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621729317] [2024-11-18 15:33:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:18,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:33:18,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:33:18,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:33:18,027 INFO L87 Difference]: Start difference. First operand 81535 states and 185746 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:23,928 INFO L93 Difference]: Finished difference Result 174062 states and 440129 transitions. [2024-11-18 15:33:23,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:33:23,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 15:33:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:25,178 INFO L225 Difference]: With dead ends: 174062 [2024-11-18 15:33:25,178 INFO L226 Difference]: Without dead ends: 94661 [2024-11-18 15:33:25,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:25,358 INFO L432 NwaCegarLoop]: 4181 mSDtfsCounter, 4364 mSDsluCounter, 8271 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 12452 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:25,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4377 Valid, 12452 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:33:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94661 states. [2024-11-18 15:33:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94661 to 81535. [2024-11-18 15:33:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81535 states, 70592 states have (on average 1.6116415457842248) internal successors, (113769), 76901 states have internal predecessors, (113769), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 7848 states have return successors, (68627), 3346 states have call predecessors, (68627), 3091 states have call successors, (68627) [2024-11-18 15:33:34,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81535 states to 81535 states and 185489 transitions. [2024-11-18 15:33:34,347 INFO L78 Accepts]: Start accepts. Automaton has 81535 states and 185489 transitions. Word has length 102 [2024-11-18 15:33:34,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:34,348 INFO L471 AbstractCegarLoop]: Abstraction has 81535 states and 185489 transitions. [2024-11-18 15:33:34,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:34,349 INFO L276 IsEmpty]: Start isEmpty. Operand 81535 states and 185489 transitions. [2024-11-18 15:33:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 15:33:34,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:34,397 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] [2024-11-18 15:33:34,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 15:33:34,397 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:34,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:34,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1898622842, now seen corresponding path program 1 times [2024-11-18 15:33:34,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:34,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32996916] [2024-11-18 15:33:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:34,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat