./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/systemc/pc_sfifo_2.cil-1.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 b74079121634b4e5d8b815834e604eed77442466d93875e78a8cab3fe135fa1f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 21:07:36,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 21:07:36,834 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 21:07:36,839 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 21:07:36,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 21:07:36,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 21:07:36,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 21:07:36,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 21:07:36,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 21:07:36,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 21:07:36,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 21:07:36,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 21:07:36,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 21:07:36,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 21:07:36,861 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 21:07:36,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 21:07:36,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 21:07:36,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 21:07:36,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 21:07:36,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 21:07:36,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 21:07:36,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 21:07:36,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 21:07:36,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 21:07:36,863 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 21:07:36,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 21:07:36,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 21:07:36,864 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 21:07:36,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 21:07:36,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 21:07:36,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 21:07:36,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 21:07:36,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 21:07:36,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 21:07:36,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 21:07:36,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 21:07:36,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 21:07:36,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 21:07:36,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 21:07:36,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 21:07:36,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 21:07:36,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 21:07:36,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b74079121634b4e5d8b815834e604eed77442466d93875e78a8cab3fe135fa1f [2024-11-11 21:07:37,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 21:07:37,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 21:07:37,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 21:07:37,070 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 21:07:37,071 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 21:07:37,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c [2024-11-11 21:07:38,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 21:07:38,480 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 21:07:38,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c [2024-11-11 21:07:38,488 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e21049a/a2647f294ce94d74a14151d7f850b2dd/FLAG64b5b1476 [2024-11-11 21:07:38,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e21049a/a2647f294ce94d74a14151d7f850b2dd [2024-11-11 21:07:38,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 21:07:38,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 21:07:38,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 21:07:38,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 21:07:38,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 21:07:38,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 09:07:38" (1/1) ... [2024-11-11 21:07:38,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ddd9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:38, skipping insertion in model container [2024-11-11 21:07:38,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 09:07:38" (1/1) ... [2024-11-11 21:07:38,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 21:07:39,059 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/systemc/pc_sfifo_2.cil-1.c[643,656] [2024-11-11 21:07:39,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 21:07:39,111 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 21:07:39,120 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/systemc/pc_sfifo_2.cil-1.c[643,656] [2024-11-11 21:07:39,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 21:07:39,151 INFO L204 MainTranslator]: Completed translation [2024-11-11 21:07:39,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39 WrapperNode [2024-11-11 21:07:39,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 21:07:39,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 21:07:39,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 21:07:39,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 21:07:39,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,182 INFO L138 Inliner]: procedures = 29, calls = 31, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 189 [2024-11-11 21:07:39,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 21:07:39,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 21:07:39,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 21:07:39,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 21:07:39,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,206 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]. [2024-11-11 21:07:39,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 21:07:39,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 21:07:39,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 21:07:39,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 21:07:39,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (1/1) ... [2024-11-11 21:07:39,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 21:07:39,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:07:39,244 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) [2024-11-11 21:07:39,247 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 [2024-11-11 21:07:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 21:07:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-11 21:07:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-11 21:07:39,284 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-11 21:07:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-11 21:07:39,284 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-11 21:07:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-11 21:07:39,284 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-11 21:07:39,285 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-11 21:07:39,285 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-11 21:07:39,286 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-11 21:07:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-11 21:07:39,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-11 21:07:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 21:07:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-11 21:07:39,286 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-11 21:07:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 21:07:39,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 21:07:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-11 21:07:39,287 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-11 21:07:39,357 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 21:07:39,359 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 21:07:39,581 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-11 21:07:39,581 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 21:07:39,596 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 21:07:39,596 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-11 21:07:39,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 09:07:39 BoogieIcfgContainer [2024-11-11 21:07:39,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 21:07:39,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 21:07:39,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 21:07:39,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 21:07:39,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 09:07:38" (1/3) ... [2024-11-11 21:07:39,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fe11e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 09:07:39, skipping insertion in model container [2024-11-11 21:07:39,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:07:39" (2/3) ... [2024-11-11 21:07:39,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61fe11e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 09:07:39, skipping insertion in model container [2024-11-11 21:07:39,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 09:07:39" (3/3) ... [2024-11-11 21:07:39,602 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1.c [2024-11-11 21:07:39,613 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 21:07:39,613 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 21:07:39,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 21:07:39,658 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;@566bf50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 21:07:39,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 21:07:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 79 states have (on average 1.518987341772152) internal successors, (120), 83 states have internal predecessors, (120), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-11 21:07:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 21:07:39,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:39,671 INFO L218 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] [2024-11-11 21:07:39,672 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:39,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:39,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1645662907, now seen corresponding path program 1 times [2024-11-11 21:07:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023172211] [2024-11-11 21:07:39,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:39,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:39,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:39,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:39,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:39,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:39,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:39,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:39,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:39,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023172211] [2024-11-11 21:07:39,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023172211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:39,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:39,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-11 21:07:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109916202] [2024-11-11 21:07:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:39,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 21:07:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:40,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 21:07:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 21:07:40,053 INFO L87 Difference]: Start difference. First operand has 103 states, 79 states have (on average 1.518987341772152) internal successors, (120), 83 states have internal predecessors, (120), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:40,369 INFO L93 Difference]: Finished difference Result 215 states and 313 transitions. [2024-11-11 21:07:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 21:07:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-11-11 21:07:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:40,380 INFO L225 Difference]: With dead ends: 215 [2024-11-11 21:07:40,381 INFO L226 Difference]: Without dead ends: 115 [2024-11-11 21:07:40,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-11 21:07:40,386 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 213 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:40,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 239 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:07:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-11 21:07:40,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2024-11-11 21:07:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.4) internal successors, (105), 77 states have internal predecessors, (105), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-11 21:07:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 131 transitions. [2024-11-11 21:07:40,436 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 131 transitions. Word has length 64 [2024-11-11 21:07:40,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:40,437 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 131 transitions. [2024-11-11 21:07:40,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:40,437 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 131 transitions. [2024-11-11 21:07:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 21:07:40,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:40,439 INFO L218 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] [2024-11-11 21:07:40,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 21:07:40,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:40,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash 258877497, now seen corresponding path program 1 times [2024-11-11 21:07:40,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:40,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942415095] [2024-11-11 21:07:40,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:40,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:40,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:40,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:40,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:40,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:40,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:40,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:40,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:40,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:40,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942415095] [2024-11-11 21:07:40,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942415095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:40,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:40,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-11 21:07:40,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113883021] [2024-11-11 21:07:40,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:40,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 21:07:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 21:07:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:07:40,650 INFO L87 Difference]: Start difference. First operand 97 states and 131 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:41,150 INFO L93 Difference]: Finished difference Result 320 states and 445 transitions. [2024-11-11 21:07:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-11 21:07:41,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-11-11 21:07:41,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:41,153 INFO L225 Difference]: With dead ends: 320 [2024-11-11 21:07:41,155 INFO L226 Difference]: Without dead ends: 232 [2024-11-11 21:07:41,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-11 21:07:41,157 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 324 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:41,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 344 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 21:07:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-11 21:07:41,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 193. [2024-11-11 21:07:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 151 states have (on average 1.3841059602649006) internal successors, (209), 155 states have internal predecessors, (209), 25 states have call successors, (25), 15 states have call predecessors, (25), 16 states have return successors, (28), 24 states have call predecessors, (28), 23 states have call successors, (28) [2024-11-11 21:07:41,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 262 transitions. [2024-11-11 21:07:41,203 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 262 transitions. Word has length 64 [2024-11-11 21:07:41,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:41,204 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 262 transitions. [2024-11-11 21:07:41,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:41,204 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 262 transitions. [2024-11-11 21:07:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 21:07:41,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:41,206 INFO L218 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] [2024-11-11 21:07:41,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 21:07:41,206 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:41,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash 662663448, now seen corresponding path program 1 times [2024-11-11 21:07:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490882812] [2024-11-11 21:07:41,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:41,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:41,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490882812] [2024-11-11 21:07:41,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490882812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:41,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:41,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-11 21:07:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780907660] [2024-11-11 21:07:41,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:41,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 21:07:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 21:07:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:07:41,351 INFO L87 Difference]: Start difference. First operand 193 states and 262 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:41,852 INFO L93 Difference]: Finished difference Result 540 states and 738 transitions. [2024-11-11 21:07:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-11 21:07:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-11-11 21:07:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:41,855 INFO L225 Difference]: With dead ends: 540 [2024-11-11 21:07:41,855 INFO L226 Difference]: Without dead ends: 363 [2024-11-11 21:07:41,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-11 21:07:41,857 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 353 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:41,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 668 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 21:07:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-11 21:07:41,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 289. [2024-11-11 21:07:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 227 states have (on average 1.3744493392070485) internal successors, (312), 233 states have internal predecessors, (312), 36 states have call successors, (36), 22 states have call predecessors, (36), 25 states have return successors, (47), 36 states have call predecessors, (47), 34 states have call successors, (47) [2024-11-11 21:07:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 395 transitions. [2024-11-11 21:07:41,887 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 395 transitions. Word has length 64 [2024-11-11 21:07:41,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:41,888 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 395 transitions. [2024-11-11 21:07:41,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 395 transitions. [2024-11-11 21:07:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 21:07:41,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:41,892 INFO L218 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] [2024-11-11 21:07:41,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 21:07:41,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:41,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1365922662, now seen corresponding path program 1 times [2024-11-11 21:07:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:41,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688403199] [2024-11-11 21:07:41,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:41,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:41,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:42,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:42,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688403199] [2024-11-11 21:07:42,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688403199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:42,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:42,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-11 21:07:42,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030238257] [2024-11-11 21:07:42,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:42,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 21:07:42,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:42,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 21:07:42,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-11 21:07:42,061 INFO L87 Difference]: Start difference. First operand 289 states and 395 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-11 21:07:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:42,376 INFO L93 Difference]: Finished difference Result 588 states and 806 transitions. [2024-11-11 21:07:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 21:07:42,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-11 21:07:42,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:42,378 INFO L225 Difference]: With dead ends: 588 [2024-11-11 21:07:42,379 INFO L226 Difference]: Without dead ends: 321 [2024-11-11 21:07:42,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-11 21:07:42,384 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 162 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:42,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 439 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:07:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-11 21:07:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 294. [2024-11-11 21:07:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 231 states have (on average 1.3593073593073592) internal successors, (314), 237 states have internal predecessors, (314), 36 states have call successors, (36), 22 states have call predecessors, (36), 26 states have return successors, (48), 37 states have call predecessors, (48), 34 states have call successors, (48) [2024-11-11 21:07:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 398 transitions. [2024-11-11 21:07:42,418 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 398 transitions. Word has length 64 [2024-11-11 21:07:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:42,418 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 398 transitions. [2024-11-11 21:07:42,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-11 21:07:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 398 transitions. [2024-11-11 21:07:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 21:07:42,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:42,421 INFO L218 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] [2024-11-11 21:07:42,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 21:07:42,421 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:42,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1899685336, now seen corresponding path program 1 times [2024-11-11 21:07:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457361586] [2024-11-11 21:07:42,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:42,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457361586] [2024-11-11 21:07:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457361586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:42,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:42,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-11 21:07:42,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048691799] [2024-11-11 21:07:42,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:42,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 21:07:42,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:42,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 21:07:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-11 21:07:42,575 INFO L87 Difference]: Start difference. First operand 294 states and 398 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-11 21:07:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:43,718 INFO L93 Difference]: Finished difference Result 1956 states and 2670 transitions. [2024-11-11 21:07:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-11 21:07:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 64 [2024-11-11 21:07:43,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:43,726 INFO L225 Difference]: With dead ends: 1956 [2024-11-11 21:07:43,726 INFO L226 Difference]: Without dead ends: 1684 [2024-11-11 21:07:43,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2024-11-11 21:07:43,728 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 1114 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:43,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 786 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 21:07:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2024-11-11 21:07:43,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1434. [2024-11-11 21:07:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1131 states have (on average 1.3218390804597702) internal successors, (1495), 1157 states have internal predecessors, (1495), 153 states have call successors, (153), 124 states have call predecessors, (153), 149 states have return successors, (234), 155 states have call predecessors, (234), 151 states have call successors, (234) [2024-11-11 21:07:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1882 transitions. [2024-11-11 21:07:43,822 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1882 transitions. Word has length 64 [2024-11-11 21:07:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:43,822 INFO L471 AbstractCegarLoop]: Abstraction has 1434 states and 1882 transitions. [2024-11-11 21:07:43,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-11 21:07:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1882 transitions. [2024-11-11 21:07:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 21:07:43,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:43,824 INFO L218 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] [2024-11-11 21:07:43,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 21:07:43,824 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:43,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:43,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1343832871, now seen corresponding path program 1 times [2024-11-11 21:07:43,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:43,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903146564] [2024-11-11 21:07:43,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:43,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:43,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:43,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:43,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:43,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:43,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:43,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:43,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:43,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:43,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903146564] [2024-11-11 21:07:43,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903146564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:43,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:43,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-11 21:07:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140470317] [2024-11-11 21:07:43,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:43,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 21:07:43,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 21:07:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-11 21:07:43,942 INFO L87 Difference]: Start difference. First operand 1434 states and 1882 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-11 21:07:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:44,310 INFO L93 Difference]: Finished difference Result 3031 states and 4001 transitions. [2024-11-11 21:07:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 21:07:44,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-11 21:07:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:44,316 INFO L225 Difference]: With dead ends: 3031 [2024-11-11 21:07:44,316 INFO L226 Difference]: Without dead ends: 1619 [2024-11-11 21:07:44,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-11 21:07:44,319 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 113 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:44,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 488 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:07:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-11 21:07:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1479. [2024-11-11 21:07:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1167 states have (on average 1.3041988003427591) internal successors, (1522), 1193 states have internal predecessors, (1522), 153 states have call successors, (153), 124 states have call predecessors, (153), 158 states have return successors, (246), 164 states have call predecessors, (246), 151 states have call successors, (246) [2024-11-11 21:07:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1921 transitions. [2024-11-11 21:07:44,402 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1921 transitions. Word has length 64 [2024-11-11 21:07:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:44,402 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 1921 transitions. [2024-11-11 21:07:44,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-11 21:07:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1921 transitions. [2024-11-11 21:07:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 21:07:44,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:44,403 INFO L218 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] [2024-11-11 21:07:44,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 21:07:44,403 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:44,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 42370523, now seen corresponding path program 1 times [2024-11-11 21:07:44,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:44,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414006246] [2024-11-11 21:07:44,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:44,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:44,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:44,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:44,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:44,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:44,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:44,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:44,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:44,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414006246] [2024-11-11 21:07:44,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414006246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:44,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:44,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-11 21:07:44,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454388567] [2024-11-11 21:07:44,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:44,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 21:07:44,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:44,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 21:07:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:07:44,518 INFO L87 Difference]: Start difference. First operand 1479 states and 1921 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:45,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:45,071 INFO L93 Difference]: Finished difference Result 2914 states and 3760 transitions. [2024-11-11 21:07:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-11 21:07:45,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-11-11 21:07:45,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:45,078 INFO L225 Difference]: With dead ends: 2914 [2024-11-11 21:07:45,078 INFO L226 Difference]: Without dead ends: 1677 [2024-11-11 21:07:45,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-11 21:07:45,083 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 416 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:45,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 341 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 21:07:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2024-11-11 21:07:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1457. [2024-11-11 21:07:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1153 states have (on average 1.2992194275802256) internal successors, (1498), 1173 states have internal predecessors, (1498), 153 states have call successors, (153), 124 states have call predecessors, (153), 150 states have return successors, (230), 162 states have call predecessors, (230), 151 states have call successors, (230) [2024-11-11 21:07:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1881 transitions. [2024-11-11 21:07:45,181 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1881 transitions. Word has length 64 [2024-11-11 21:07:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:45,181 INFO L471 AbstractCegarLoop]: Abstraction has 1457 states and 1881 transitions. [2024-11-11 21:07:45,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1881 transitions. [2024-11-11 21:07:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 21:07:45,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:45,182 INFO L218 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] [2024-11-11 21:07:45,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 21:07:45,183 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:45,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -91642983, now seen corresponding path program 1 times [2024-11-11 21:07:45,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:45,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335141031] [2024-11-11 21:07:45,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:45,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:45,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335141031] [2024-11-11 21:07:45,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335141031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:45,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:45,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-11 21:07:45,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412550664] [2024-11-11 21:07:45,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:45,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 21:07:45,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:45,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 21:07:45,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:07:45,267 INFO L87 Difference]: Start difference. First operand 1457 states and 1881 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:45,687 INFO L93 Difference]: Finished difference Result 4532 states and 5857 transitions. [2024-11-11 21:07:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 21:07:45,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-11-11 21:07:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:45,698 INFO L225 Difference]: With dead ends: 4532 [2024-11-11 21:07:45,698 INFO L226 Difference]: Without dead ends: 3100 [2024-11-11 21:07:45,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-11 21:07:45,703 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 394 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:45,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 280 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:07:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-11-11 21:07:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2828. [2024-11-11 21:07:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2219 states have (on average 1.2672374943668319) internal successors, (2812), 2260 states have internal predecessors, (2812), 305 states have call successors, (305), 247 states have call predecessors, (305), 303 states have return successors, (502), 326 states have call predecessors, (502), 303 states have call successors, (502) [2024-11-11 21:07:45,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3619 transitions. [2024-11-11 21:07:45,880 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3619 transitions. Word has length 64 [2024-11-11 21:07:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:45,885 INFO L471 AbstractCegarLoop]: Abstraction has 2828 states and 3619 transitions. [2024-11-11 21:07:45,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-11 21:07:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3619 transitions. [2024-11-11 21:07:45,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-11 21:07:45,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:45,886 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:07:45,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 21:07:45,887 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:45,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:45,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2137648849, now seen corresponding path program 1 times [2024-11-11 21:07:45,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:45,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947462339] [2024-11-11 21:07:45,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:45,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:45,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:45,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947462339] [2024-11-11 21:07:45,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947462339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:45,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:45,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-11 21:07:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532304327] [2024-11-11 21:07:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:45,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 21:07:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 21:07:45,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 21:07:45,948 INFO L87 Difference]: Start difference. First operand 2828 states and 3619 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-11 21:07:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:46,513 INFO L93 Difference]: Finished difference Result 7846 states and 10129 transitions. [2024-11-11 21:07:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 21:07:46,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-11 21:07:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:46,533 INFO L225 Difference]: With dead ends: 7846 [2024-11-11 21:07:46,534 INFO L226 Difference]: Without dead ends: 5022 [2024-11-11 21:07:46,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-11 21:07:46,541 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 299 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:46,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 296 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:07:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5022 states. [2024-11-11 21:07:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 4506. [2024-11-11 21:07:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 3504 states have (on average 1.259703196347032) internal successors, (4414), 3552 states have internal predecessors, (4414), 499 states have call successors, (499), 421 states have call predecessors, (499), 502 states have return successors, (823), 538 states have call predecessors, (823), 497 states have call successors, (823) [2024-11-11 21:07:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 5736 transitions. [2024-11-11 21:07:46,814 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 5736 transitions. Word has length 65 [2024-11-11 21:07:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:46,814 INFO L471 AbstractCegarLoop]: Abstraction has 4506 states and 5736 transitions. [2024-11-11 21:07:46,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-11 21:07:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 5736 transitions. [2024-11-11 21:07:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-11 21:07:46,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:46,816 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:07:46,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-11 21:07:46,816 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:46,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash -78334537, now seen corresponding path program 1 times [2024-11-11 21:07:46,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:46,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620308313] [2024-11-11 21:07:46,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:46,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:46,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:46,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:46,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:46,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:46,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:46,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:46,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:46,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:46,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620308313] [2024-11-11 21:07:46,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620308313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:46,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:46,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-11 21:07:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012295035] [2024-11-11 21:07:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:46,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 21:07:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 21:07:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:07:46,872 INFO L87 Difference]: Start difference. First operand 4506 states and 5736 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-11 21:07:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:47,620 INFO L93 Difference]: Finished difference Result 6136 states and 7738 transitions. [2024-11-11 21:07:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-11 21:07:47,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2024-11-11 21:07:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:47,644 INFO L225 Difference]: With dead ends: 6136 [2024-11-11 21:07:47,644 INFO L226 Difference]: Without dead ends: 6133 [2024-11-11 21:07:47,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-11 21:07:47,646 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 475 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:47,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 287 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 21:07:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2024-11-11 21:07:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 5560. [2024-11-11 21:07:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 4307 states have (on average 1.2500580450429533) internal successors, (5384), 4364 states have internal predecessors, (5384), 625 states have call successors, (625), 535 states have call predecessors, (625), 627 states have return successors, (1016), 666 states have call predecessors, (1016), 624 states have call successors, (1016) [2024-11-11 21:07:48,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 7025 transitions. [2024-11-11 21:07:48,020 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 7025 transitions. Word has length 72 [2024-11-11 21:07:48,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:48,021 INFO L471 AbstractCegarLoop]: Abstraction has 5560 states and 7025 transitions. [2024-11-11 21:07:48,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-11 21:07:48,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 7025 transitions. [2024-11-11 21:07:48,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-11 21:07:48,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:48,022 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:07:48,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-11 21:07:48,022 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:48,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:48,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1866244794, now seen corresponding path program 1 times [2024-11-11 21:07:48,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:48,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796122655] [2024-11-11 21:07:48,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:48,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:48,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:48,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796122655] [2024-11-11 21:07:48,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796122655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:07:48,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727365241] [2024-11-11 21:07:48,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:48,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:07:48,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:07:48,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:07:48,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 21:07:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:48,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 21:07:48,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:07:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:48,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:07:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727365241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:07:48,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:07:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-11-11 21:07:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097039008] [2024-11-11 21:07:48,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:07:48,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-11 21:07:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-11 21:07:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-11 21:07:48,506 INFO L87 Difference]: Start difference. First operand 5560 states and 7025 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-11 21:07:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:50,284 INFO L93 Difference]: Finished difference Result 13206 states and 16553 transitions. [2024-11-11 21:07:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-11 21:07:50,284 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 73 [2024-11-11 21:07:50,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:50,330 INFO L225 Difference]: With dead ends: 13206 [2024-11-11 21:07:50,330 INFO L226 Difference]: Without dead ends: 13203 [2024-11-11 21:07:50,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2024-11-11 21:07:50,336 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 840 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:50,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 790 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 21:07:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13203 states. [2024-11-11 21:07:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13203 to 10818. [2024-11-11 21:07:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10818 states, 8399 states have (on average 1.249315394689844) internal successors, (10493), 8508 states have internal predecessors, (10493), 1191 states have call successors, (1191), 1025 states have call predecessors, (1191), 1227 states have return successors, (1955), 1290 states have call predecessors, (1955), 1190 states have call successors, (1955) [2024-11-11 21:07:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10818 states to 10818 states and 13639 transitions. [2024-11-11 21:07:51,171 INFO L78 Accepts]: Start accepts. Automaton has 10818 states and 13639 transitions. Word has length 73 [2024-11-11 21:07:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:51,171 INFO L471 AbstractCegarLoop]: Abstraction has 10818 states and 13639 transitions. [2024-11-11 21:07:51,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-11 21:07:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 10818 states and 13639 transitions. [2024-11-11 21:07:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-11 21:07:51,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:51,173 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:07:51,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 21:07:51,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-11 21:07:51,374 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:51,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1600677641, now seen corresponding path program 2 times [2024-11-11 21:07:51,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:51,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238154234] [2024-11-11 21:07:51,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:51,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:51,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:51,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:51,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:51,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:51,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:51,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:51,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:07:51,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:51,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238154234] [2024-11-11 21:07:51,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238154234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:51,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:51,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-11 21:07:51,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719543351] [2024-11-11 21:07:51,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:51,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 21:07:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:51,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 21:07:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 21:07:51,421 INFO L87 Difference]: Start difference. First operand 10818 states and 13639 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-11 21:07:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:52,120 INFO L93 Difference]: Finished difference Result 17361 states and 21981 transitions. [2024-11-11 21:07:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 21:07:52,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 76 [2024-11-11 21:07:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:52,149 INFO L225 Difference]: With dead ends: 17361 [2024-11-11 21:07:52,150 INFO L226 Difference]: Without dead ends: 7423 [2024-11-11 21:07:52,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-11 21:07:52,169 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 211 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:52,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 374 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:07:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2024-11-11 21:07:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 6871. [2024-11-11 21:07:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6871 states, 5346 states have (on average 1.222035166479611) internal successors, (6533), 5411 states have internal predecessors, (6533), 758 states have call successors, (758), 649 states have call predecessors, (758), 766 states have return successors, (1174), 816 states have call predecessors, (1174), 757 states have call successors, (1174) [2024-11-11 21:07:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6871 states to 6871 states and 8465 transitions. [2024-11-11 21:07:52,923 INFO L78 Accepts]: Start accepts. Automaton has 6871 states and 8465 transitions. Word has length 76 [2024-11-11 21:07:52,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:52,923 INFO L471 AbstractCegarLoop]: Abstraction has 6871 states and 8465 transitions. [2024-11-11 21:07:52,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-11 21:07:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6871 states and 8465 transitions. [2024-11-11 21:07:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-11 21:07:52,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:52,926 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:07:52,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-11 21:07:52,926 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:52,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:52,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1691663828, now seen corresponding path program 1 times [2024-11-11 21:07:52,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:52,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181013776] [2024-11-11 21:07:52,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:52,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:52,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:52,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:53,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:53,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:53,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:53,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:53,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:53,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-11 21:07:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 21:07:53,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:53,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181013776] [2024-11-11 21:07:53,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181013776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:53,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:53,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-11 21:07:53,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348943461] [2024-11-11 21:07:53,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:53,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 21:07:53,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:53,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 21:07:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:07:53,021 INFO L87 Difference]: Start difference. First operand 6871 states and 8465 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-11 21:07:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:54,550 INFO L93 Difference]: Finished difference Result 20729 states and 25646 transitions. [2024-11-11 21:07:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-11 21:07:54,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 83 [2024-11-11 21:07:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:54,594 INFO L225 Difference]: With dead ends: 20729 [2024-11-11 21:07:54,594 INFO L226 Difference]: Without dead ends: 13886 [2024-11-11 21:07:54,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-11-11 21:07:54,612 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 522 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:54,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 441 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 21:07:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13886 states. [2024-11-11 21:07:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13886 to 13027. [2024-11-11 21:07:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13027 states, 10018 states have (on average 1.19944100618886) internal successors, (12016), 10185 states have internal predecessors, (12016), 1462 states have call successors, (1462), 1253 states have call predecessors, (1462), 1546 states have return successors, (2563), 1594 states have call predecessors, (2563), 1461 states have call successors, (2563) [2024-11-11 21:07:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13027 states to 13027 states and 16041 transitions. [2024-11-11 21:07:55,558 INFO L78 Accepts]: Start accepts. Automaton has 13027 states and 16041 transitions. Word has length 83 [2024-11-11 21:07:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:55,558 INFO L471 AbstractCegarLoop]: Abstraction has 13027 states and 16041 transitions. [2024-11-11 21:07:55,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-11 21:07:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13027 states and 16041 transitions. [2024-11-11 21:07:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-11 21:07:55,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:55,562 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:07:55,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-11 21:07:55,562 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:55,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1092647019, now seen corresponding path program 1 times [2024-11-11 21:07:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135097637] [2024-11-11 21:07:55,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-11 21:07:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 21:07:55,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:55,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135097637] [2024-11-11 21:07:55,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135097637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:55,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:07:55,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-11 21:07:55,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129550975] [2024-11-11 21:07:55,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:55,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 21:07:55,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:55,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 21:07:55,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-11 21:07:55,649 INFO L87 Difference]: Start difference. First operand 13027 states and 16041 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-11 21:07:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:57,272 INFO L93 Difference]: Finished difference Result 23901 states and 29354 transitions. [2024-11-11 21:07:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-11 21:07:57,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2024-11-11 21:07:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:57,313 INFO L225 Difference]: With dead ends: 23901 [2024-11-11 21:07:57,313 INFO L226 Difference]: Without dead ends: 11510 [2024-11-11 21:07:57,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2024-11-11 21:07:57,340 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 1065 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:57,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 525 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 21:07:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2024-11-11 21:07:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 10610. [2024-11-11 21:07:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10610 states, 8186 states have (on average 1.1887368678231127) internal successors, (9731), 8322 states have internal predecessors, (9731), 1169 states have call successors, (1169), 1002 states have call predecessors, (1169), 1254 states have return successors, (1902), 1291 states have call predecessors, (1902), 1168 states have call successors, (1902) [2024-11-11 21:07:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 12802 transitions. [2024-11-11 21:07:58,623 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 12802 transitions. Word has length 92 [2024-11-11 21:07:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:58,623 INFO L471 AbstractCegarLoop]: Abstraction has 10610 states and 12802 transitions. [2024-11-11 21:07:58,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-11 21:07:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 12802 transitions. [2024-11-11 21:07:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-11 21:07:58,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:58,634 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:07:58,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 21:07:58,635 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:58,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash 578230399, now seen corresponding path program 1 times [2024-11-11 21:07:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044825749] [2024-11-11 21:07:58,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:58,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:07:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:07:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-11 21:07:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-11 21:07:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-11 21:07:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-11 21:07:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:07:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-11 21:07:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-11 21:07:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-11 21:07:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-11 21:07:58,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:07:58,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044825749] [2024-11-11 21:07:58,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044825749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:07:58,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932476915] [2024-11-11 21:07:58,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:58,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:07:58,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:07:58,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:07:58,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 21:07:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:58,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-11 21:07:58,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:07:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 21:07:58,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 21:07:58,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932476915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:07:58,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 21:07:58,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-11-11 21:07:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920017607] [2024-11-11 21:07:58,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:07:58,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 21:07:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:07:58,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 21:07:58,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-11 21:07:58,901 INFO L87 Difference]: Start difference. First operand 10610 states and 12802 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-11 21:07:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:07:59,416 INFO L93 Difference]: Finished difference Result 15403 states and 18554 transitions. [2024-11-11 21:07:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 21:07:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2024-11-11 21:07:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:07:59,433 INFO L225 Difference]: With dead ends: 15403 [2024-11-11 21:07:59,434 INFO L226 Difference]: Without dead ends: 4821 [2024-11-11 21:07:59,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-11 21:07:59,449 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:07:59,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 621 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:07:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2024-11-11 21:07:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4667. [2024-11-11 21:07:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4667 states, 3699 states have (on average 1.1732900783995674) internal successors, (4340), 3735 states have internal predecessors, (4340), 467 states have call successors, (467), 386 states have call predecessors, (467), 500 states have return successors, (738), 545 states have call predecessors, (738), 466 states have call successors, (738) [2024-11-11 21:07:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 5545 transitions. [2024-11-11 21:07:59,744 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 5545 transitions. Word has length 144 [2024-11-11 21:07:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:07:59,744 INFO L471 AbstractCegarLoop]: Abstraction has 4667 states and 5545 transitions. [2024-11-11 21:07:59,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-11 21:07:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 5545 transitions. [2024-11-11 21:07:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-11 21:07:59,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:07:59,751 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:07:59,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 21:07:59,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-11 21:07:59,955 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:07:59,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:07:59,955 INFO L85 PathProgramCache]: Analyzing trace with hash -371595989, now seen corresponding path program 1 times [2024-11-11 21:07:59,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:07:59,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666083497] [2024-11-11 21:07:59,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:07:59,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:07:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:59,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:07:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:59,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:07:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:59,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:07:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:07:59,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:07:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:08:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:08:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-11 21:08:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-11 21:08:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-11 21:08:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-11 21:08:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-11 21:08:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-11 21:08:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-11 21:08:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-11 21:08:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:08:00,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666083497] [2024-11-11 21:08:00,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666083497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:08:00,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:08:00,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-11 21:08:00,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348437648] [2024-11-11 21:08:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:08:00,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 21:08:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:08:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 21:08:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 21:08:00,017 INFO L87 Difference]: Start difference. First operand 4667 states and 5545 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-11 21:08:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:08:00,419 INFO L93 Difference]: Finished difference Result 5210 states and 6157 transitions. [2024-11-11 21:08:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 21:08:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 146 [2024-11-11 21:08:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:08:00,438 INFO L225 Difference]: With dead ends: 5210 [2024-11-11 21:08:00,438 INFO L226 Difference]: Without dead ends: 4461 [2024-11-11 21:08:00,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-11 21:08:00,441 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 219 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:08:00,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 210 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:08:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2024-11-11 21:08:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 4242. [2024-11-11 21:08:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 3370 states have (on average 1.175074183976261) internal successors, (3960), 3403 states have internal predecessors, (3960), 421 states have call successors, (421), 346 states have call predecessors, (421), 450 states have return successors, (674), 492 states have call predecessors, (674), 420 states have call successors, (674) [2024-11-11 21:08:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 5055 transitions. [2024-11-11 21:08:00,721 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 5055 transitions. Word has length 146 [2024-11-11 21:08:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:08:00,721 INFO L471 AbstractCegarLoop]: Abstraction has 4242 states and 5055 transitions. [2024-11-11 21:08:00,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-11 21:08:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 5055 transitions. [2024-11-11 21:08:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-11 21:08:00,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:08:00,729 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:08:00,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-11 21:08:00,729 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:08:00,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:08:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash 83168210, now seen corresponding path program 1 times [2024-11-11 21:08:00,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:08:00,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501010269] [2024-11-11 21:08:00,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:00,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:08:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:08:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-11 21:08:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-11 21:08:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-11 21:08:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-11 21:08:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-11 21:08:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-11 21:08:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-11 21:08:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-11 21:08:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-11 21:08:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-11 21:08:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-11 21:08:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-11 21:08:00,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:08:00,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501010269] [2024-11-11 21:08:00,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501010269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:08:00,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10014194] [2024-11-11 21:08:00,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:00,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:08:00,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:08:00,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:08:00,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 21:08:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:00,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 21:08:00,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:08:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 21:08:00,982 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 21:08:00,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10014194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:08:00,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 21:08:00,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-11 21:08:00,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760521813] [2024-11-11 21:08:00,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:08:00,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:08:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:08:00,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:08:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:08:00,984 INFO L87 Difference]: Start difference. First operand 4242 states and 5055 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-11 21:08:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:08:01,192 INFO L93 Difference]: Finished difference Result 6078 states and 7215 transitions. [2024-11-11 21:08:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:08:01,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 157 [2024-11-11 21:08:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:08:01,205 INFO L225 Difference]: With dead ends: 6078 [2024-11-11 21:08:01,205 INFO L226 Difference]: Without dead ends: 2113 [2024-11-11 21:08:01,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:08:01,211 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 36 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:08:01,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:08:01,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2024-11-11 21:08:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2113. [2024-11-11 21:08:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 1690 states have (on average 1.16094674556213) internal successors, (1962), 1707 states have internal predecessors, (1962), 202 states have call successors, (202), 168 states have call predecessors, (202), 220 states have return successors, (303), 237 states have call predecessors, (303), 201 states have call successors, (303) [2024-11-11 21:08:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2467 transitions. [2024-11-11 21:08:01,362 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2467 transitions. Word has length 157 [2024-11-11 21:08:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:08:01,362 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 2467 transitions. [2024-11-11 21:08:01,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-11 21:08:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2467 transitions. [2024-11-11 21:08:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-11 21:08:01,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:08:01,366 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:08:01,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 21:08:01,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:08:01,567 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:08:01,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:08:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 702759848, now seen corresponding path program 1 times [2024-11-11 21:08:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:08:01,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660136516] [2024-11-11 21:08:01,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:08:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:08:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:08:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:08:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:08:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:08:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-11 21:08:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-11 21:08:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-11 21:08:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-11 21:08:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-11 21:08:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-11 21:08:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-11 21:08:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-11 21:08:01,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:08:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660136516] [2024-11-11 21:08:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660136516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:08:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:08:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-11 21:08:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348800559] [2024-11-11 21:08:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:08:01,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 21:08:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:08:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 21:08:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:08:01,640 INFO L87 Difference]: Start difference. First operand 2113 states and 2467 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-11 21:08:02,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:08:02,037 INFO L93 Difference]: Finished difference Result 3977 states and 4677 transitions. [2024-11-11 21:08:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 21:08:02,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 158 [2024-11-11 21:08:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:08:02,048 INFO L225 Difference]: With dead ends: 3977 [2024-11-11 21:08:02,048 INFO L226 Difference]: Without dead ends: 2216 [2024-11-11 21:08:02,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-11 21:08:02,051 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 142 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:08:02,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 425 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:08:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2024-11-11 21:08:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1672. [2024-11-11 21:08:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1341 states have (on average 1.1670395227442207) internal successors, (1565), 1357 states have internal predecessors, (1565), 158 states have call successors, (158), 132 states have call predecessors, (158), 172 states have return successors, (235), 182 states have call predecessors, (235), 157 states have call successors, (235) [2024-11-11 21:08:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 1958 transitions. [2024-11-11 21:08:02,176 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 1958 transitions. Word has length 158 [2024-11-11 21:08:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:08:02,177 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 1958 transitions. [2024-11-11 21:08:02,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-11 21:08:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 1958 transitions. [2024-11-11 21:08:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-11 21:08:02,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:08:02,180 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:08:02,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-11 21:08:02,180 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:08:02,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:08:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1973905068, now seen corresponding path program 1 times [2024-11-11 21:08:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:08:02,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20358602] [2024-11-11 21:08:02,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:08:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:08:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:08:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:08:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:08:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:08:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-11 21:08:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-11 21:08:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-11 21:08:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-11 21:08:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-11 21:08:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-11 21:08:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-11 21:08:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-11 21:08:02,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:08:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20358602] [2024-11-11 21:08:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20358602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:08:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386237567] [2024-11-11 21:08:02,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:02,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:08:02,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:08:02,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:08:02,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 21:08:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:02,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 21:08:02,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:08:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-11 21:08:02,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:08:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-11 21:08:02,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386237567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:08:02,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:08:02,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-11-11 21:08:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187082157] [2024-11-11 21:08:02,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:08:02,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 21:08:02,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:08:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 21:08:02,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-11 21:08:02,745 INFO L87 Difference]: Start difference. First operand 1672 states and 1958 transitions. Second operand has 14 states, 14 states have (on average 17.5) internal successors, (245), 12 states have internal predecessors, (245), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-11 21:08:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:08:03,399 INFO L93 Difference]: Finished difference Result 3707 states and 4436 transitions. [2024-11-11 21:08:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-11 21:08:03,400 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.5) internal successors, (245), 12 states have internal predecessors, (245), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 161 [2024-11-11 21:08:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:08:03,409 INFO L225 Difference]: With dead ends: 3707 [2024-11-11 21:08:03,409 INFO L226 Difference]: Without dead ends: 1959 [2024-11-11 21:08:03,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 355 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2024-11-11 21:08:03,416 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 758 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 21:08:03,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 412 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 21:08:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2024-11-11 21:08:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1759. [2024-11-11 21:08:03,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1386 states have (on average 1.1392496392496392) internal successors, (1579), 1407 states have internal predecessors, (1579), 180 states have call successors, (180), 156 states have call predecessors, (180), 192 states have return successors, (286), 195 states have call predecessors, (286), 179 states have call successors, (286) [2024-11-11 21:08:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2045 transitions. [2024-11-11 21:08:03,559 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2045 transitions. Word has length 161 [2024-11-11 21:08:03,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:08:03,559 INFO L471 AbstractCegarLoop]: Abstraction has 1759 states and 2045 transitions. [2024-11-11 21:08:03,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.5) internal successors, (245), 12 states have internal predecessors, (245), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-11 21:08:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2045 transitions. [2024-11-11 21:08:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-11 21:08:03,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:08:03,562 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:08:03,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 21:08:03,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:08:03,767 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:08:03,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:08:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash 11419214, now seen corresponding path program 1 times [2024-11-11 21:08:03,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:08:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648757766] [2024-11-11 21:08:03,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:08:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:08:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-11 21:08:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-11 21:08:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-11 21:08:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-11 21:08:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-11 21:08:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-11 21:08:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-11 21:08:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-11 21:08:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-11 21:08:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-11 21:08:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-11 21:08:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-11 21:08:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-11 21:08:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:08:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648757766] [2024-11-11 21:08:03,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648757766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:08:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899490658] [2024-11-11 21:08:03,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:03,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:08:03,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:08:03,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:08:03,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 21:08:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:03,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 21:08:03,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:08:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-11 21:08:03,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 21:08:03,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899490658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:08:03,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 21:08:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-11 21:08:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056590239] [2024-11-11 21:08:03,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:08:03,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:08:03,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:08:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:08:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-11 21:08:03,990 INFO L87 Difference]: Start difference. First operand 1759 states and 2045 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-11 21:08:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:08:04,224 INFO L93 Difference]: Finished difference Result 3404 states and 3968 transitions. [2024-11-11 21:08:04,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 21:08:04,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 178 [2024-11-11 21:08:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:08:04,232 INFO L225 Difference]: With dead ends: 3404 [2024-11-11 21:08:04,232 INFO L226 Difference]: Without dead ends: 1476 [2024-11-11 21:08:04,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-11 21:08:04,235 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 151 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:08:04,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 224 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:08:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2024-11-11 21:08:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1439. [2024-11-11 21:08:04,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1142 states have (on average 1.1287215411558669) internal successors, (1289), 1154 states have internal predecessors, (1289), 145 states have call successors, (145), 124 states have call predecessors, (145), 151 states have return successors, (214), 160 states have call predecessors, (214), 144 states have call successors, (214) [2024-11-11 21:08:04,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1648 transitions. [2024-11-11 21:08:04,350 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1648 transitions. Word has length 178 [2024-11-11 21:08:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:08:04,351 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 1648 transitions. [2024-11-11 21:08:04,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-11 21:08:04,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1648 transitions. [2024-11-11 21:08:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-11 21:08:04,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:08:04,353 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:08:04,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 21:08:04,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:08:04,554 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:08:04,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:08:04,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1242735248, now seen corresponding path program 1 times [2024-11-11 21:08:04,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:08:04,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645490502] [2024-11-11 21:08:04,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:04,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:08:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 21:08:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 21:08:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 21:08:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-11 21:08:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-11 21:08:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-11 21:08:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-11 21:08:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-11 21:08:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-11 21:08:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-11 21:08:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-11 21:08:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-11-11 21:08:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-11 21:08:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-11-11 21:08:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-11 21:08:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-11-11 21:08:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 21:08:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 21:08:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-11-11 21:08:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-11-11 21:08:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-11-11 21:08:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 75 proven. 16 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-11 21:08:04,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:08:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645490502] [2024-11-11 21:08:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645490502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:08:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473829896] [2024-11-11 21:08:04,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:08:04,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:08:04,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:08:04,684 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:08:04,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 21:08:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:08:04,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 21:08:04,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:08:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 256 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-11 21:08:04,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:08:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-11 21:08:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473829896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:08:05,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:08:05,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2024-11-11 21:08:05,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652900428] [2024-11-11 21:08:05,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:08:05,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 21:08:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:08:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 21:08:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-11 21:08:05,048 INFO L87 Difference]: Start difference. First operand 1439 states and 1648 transitions. Second operand has 11 states, 11 states have (on average 20.636363636363637) internal successors, (227), 8 states have internal predecessors, (227), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2024-11-11 21:08:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:08:05,499 INFO L93 Difference]: Finished difference Result 1742 states and 1983 transitions. [2024-11-11 21:08:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-11 21:08:05,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.636363636363637) internal successors, (227), 8 states have internal predecessors, (227), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 252 [2024-11-11 21:08:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:08:05,507 INFO L225 Difference]: With dead ends: 1742 [2024-11-11 21:08:05,507 INFO L226 Difference]: Without dead ends: 0 [2024-11-11 21:08:05,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2024-11-11 21:08:05,511 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 331 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 21:08:05,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 351 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 21:08:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-11 21:08:05,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-11 21:08:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:08:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-11 21:08:05,517 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 252 [2024-11-11 21:08:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:08:05,518 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-11 21:08:05,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.636363636363637) internal successors, (227), 8 states have internal predecessors, (227), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2024-11-11 21:08:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-11 21:08:05,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-11 21:08:05,521 INFO L782 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 21:08:05,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-11 21:08:05,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:08:05,724 INFO L421 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:08:05,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.