./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/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.dd.update-z3-fca748b-m [2024-11-19 22:19:51,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 22:19:51,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 22:19:51,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 22:19:51,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 22:19:51,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 22:19:51,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 22:19:51,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 22:19:51,707 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 22:19:51,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 22:19:51,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 22:19:51,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 22:19:51,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 22:19:51,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 22:19:51,712 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 22:19:51,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 22:19:51,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 22:19:51,713 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 22:19:51,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 22:19:51,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 22:19:51,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 22:19:51,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 22:19:51,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 22:19:51,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 22:19:51,715 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 22:19:51,715 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 22:19:51,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 22:19:51,716 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 22:19:51,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 22:19:51,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 22:19:51,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 22:19:51,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 22:19:51,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:19:51,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 22:19:51,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 22:19:51,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 22:19:51,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 22:19:51,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 22:19:51,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 22:19:51,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 22:19:51,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 22:19:51,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 22:19:51,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b74079121634b4e5d8b815834e604eed77442466d93875e78a8cab3fe135fa1f [2024-11-19 22:19:51,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 22:19:51,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 22:19:51,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 22:19:51,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 22:19:51,990 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 22:19:51,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c [2024-11-19 22:19:53,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 22:19:53,754 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 22:19:53,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/pc_sfifo_2.cil-1.c [2024-11-19 22:19:53,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c9178fa/c5688d3a57f347f4a9d327b5b088a261/FLAGb37757504 [2024-11-19 22:19:53,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c9178fa/c5688d3a57f347f4a9d327b5b088a261 [2024-11-19 22:19:53,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 22:19:53,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 22:19:53,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 22:19:53,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 22:19:53,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 22:19:53,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:19:53" (1/1) ... [2024-11-19 22:19:53,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449a0a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:53, skipping insertion in model container [2024-11-19 22:19:53,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:19:53" (1/1) ... [2024-11-19 22:19:53,835 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 22:19:53,998 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] [2024-11-19 22:19:54,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:19:54,053 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 22:19:54,066 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] [2024-11-19 22:19:54,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:19:54,135 INFO L204 MainTranslator]: Completed translation [2024-11-19 22:19:54,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54 WrapperNode [2024-11-19 22:19:54,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 22:19:54,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 22:19:54,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 22:19:54,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 22:19:54,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,214 INFO L138 Inliner]: procedures = 29, calls = 31, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 189 [2024-11-19 22:19:54,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 22:19:54,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 22:19:54,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 22:19:54,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 22:19:54,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,253 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]. [2024-11-19 22:19:54,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 22:19:54,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 22:19:54,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 22:19:54,292 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 22:19:54,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (1/1) ... [2024-11-19 22:19:54,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:19:54,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:19:54,336 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) [2024-11-19 22:19:54,340 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 [2024-11-19 22:19:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 22:19:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-19 22:19:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-19 22:19:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-19 22:19:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-19 22:19:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-19 22:19:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-19 22:19:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-19 22:19:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-19 22:19:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-19 22:19:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-19 22:19:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-19 22:19:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-19 22:19:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 22:19:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-19 22:19:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-19 22:19:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 22:19:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 22:19:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-19 22:19:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-19 22:19:54,483 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 22:19:54,485 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 22:19:54,792 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-19 22:19:54,792 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 22:19:54,807 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 22:19:54,807 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 22:19:54,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:19:54 BoogieIcfgContainer [2024-11-19 22:19:54,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 22:19:54,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 22:19:54,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 22:19:54,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 22:19:54,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:19:53" (1/3) ... [2024-11-19 22:19:54,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d18f3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:19:54, skipping insertion in model container [2024-11-19 22:19:54,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:19:54" (2/3) ... [2024-11-19 22:19:54,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d18f3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:19:54, skipping insertion in model container [2024-11-19 22:19:54,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:19:54" (3/3) ... [2024-11-19 22:19:54,818 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1.c [2024-11-19 22:19:54,833 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 22:19:54,834 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 22:19:54,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 22:19:54,904 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;@27321db9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 22:19:54,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 22:19:54,909 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) [2024-11-19 22:19:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:19:54,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:19:54,920 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:19:54,921 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:19:54,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:19:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1645662907, now seen corresponding path program 1 times [2024-11-19 22:19:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:19:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987207724] [2024-11-19 22:19:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:19:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:19:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:55,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:19:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:55,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:19:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:55,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:19:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:55,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:19:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:55,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:19:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:55,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:19:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:55,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:19:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:19:55,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:19:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987207724] [2024-11-19 22:19:55,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987207724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:19:55,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:19:55,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:19:55,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380159637] [2024-11-19 22:19:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:19:55,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:19:55,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:19:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:19:55,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:19:55,448 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) [2024-11-19 22:19:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:19:55,963 INFO L93 Difference]: Finished difference Result 215 states and 313 transitions. [2024-11-19 22:19:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:19:55,966 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 [2024-11-19 22:19:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:19:55,977 INFO L225 Difference]: With dead ends: 215 [2024-11-19 22:19:55,978 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 22:19:55,983 INFO L431 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 [2024-11-19 22:19:55,987 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 213 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:19:55,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 239 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:19:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 22:19:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2024-11-19 22:19:56,043 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) [2024-11-19 22:19:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 131 transitions. [2024-11-19 22:19:56,050 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 131 transitions. Word has length 64 [2024-11-19 22:19:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:19:56,051 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 131 transitions. [2024-11-19 22:19:56,051 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) [2024-11-19 22:19:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 131 transitions. [2024-11-19 22:19:56,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:19:56,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:19:56,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:19:56,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 22:19:56,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:19:56,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:19:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash 258877497, now seen corresponding path program 1 times [2024-11-19 22:19:56,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:19:56,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317995877] [2024-11-19 22:19:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:19:56,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:19:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:56,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:19:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:56,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:19:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:56,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:19:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:56,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:19:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:56,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:19:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:56,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:19:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:56,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:19:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:19:56,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:19:56,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317995877] [2024-11-19 22:19:56,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317995877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:19:56,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:19:56,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 22:19:56,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19025762] [2024-11-19 22:19:56,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:19:56,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 22:19:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:19:56,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 22:19:56,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:19:56,358 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) [2024-11-19 22:19:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:19:57,088 INFO L93 Difference]: Finished difference Result 320 states and 445 transitions. [2024-11-19 22:19:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 22:19:57,089 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 [2024-11-19 22:19:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:19:57,093 INFO L225 Difference]: With dead ends: 320 [2024-11-19 22:19:57,095 INFO L226 Difference]: Without dead ends: 232 [2024-11-19 22:19:57,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-19 22:19:57,099 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 324 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 22:19:57,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 344 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 22:19:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-19 22:19:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 193. [2024-11-19 22:19:57,155 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) [2024-11-19 22:19:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 262 transitions. [2024-11-19 22:19:57,158 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 262 transitions. Word has length 64 [2024-11-19 22:19:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:19:57,158 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 262 transitions. [2024-11-19 22:19:57,158 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) [2024-11-19 22:19:57,159 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 262 transitions. [2024-11-19 22:19:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:19:57,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:19:57,161 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:19:57,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 22:19:57,162 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:19:57,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:19:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 662663448, now seen corresponding path program 1 times [2024-11-19 22:19:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:19:57,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262207907] [2024-11-19 22:19:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:19:57,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:19:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:57,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:19:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:57,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:19:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:57,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:19:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:57,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:19:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:57,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:19:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:57,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:19:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:57,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:19:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:19:57,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:19:57,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262207907] [2024-11-19 22:19:57,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262207907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:19:57,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:19:57,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 22:19:57,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028307803] [2024-11-19 22:19:57,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:19:57,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 22:19:57,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:19:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 22:19:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:19:57,392 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) [2024-11-19 22:19:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:19:58,166 INFO L93 Difference]: Finished difference Result 540 states and 738 transitions. [2024-11-19 22:19:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 22:19:58,167 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 [2024-11-19 22:19:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:19:58,175 INFO L225 Difference]: With dead ends: 540 [2024-11-19 22:19:58,175 INFO L226 Difference]: Without dead ends: 363 [2024-11-19 22:19:58,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-19 22:19:58,178 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 353 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 22:19:58,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 668 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 22:19:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-19 22:19:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 289. [2024-11-19 22:19:58,255 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) [2024-11-19 22:19:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 395 transitions. [2024-11-19 22:19:58,263 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 395 transitions. Word has length 64 [2024-11-19 22:19:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:19:58,264 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 395 transitions. [2024-11-19 22:19:58,264 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) [2024-11-19 22:19:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 395 transitions. [2024-11-19 22:19:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:19:58,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:19:58,271 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:19:58,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 22:19:58,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:19:58,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:19:58,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1365922662, now seen corresponding path program 1 times [2024-11-19 22:19:58,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:19:58,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363021765] [2024-11-19 22:19:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:19:58,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:19:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:58,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:19:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:58,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:19:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:58,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:19:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:58,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:19:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:58,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:19:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:58,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:19:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:58,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:19:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:19:58,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:19:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363021765] [2024-11-19 22:19:58,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363021765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:19:58,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:19:58,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 22:19:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317838186] [2024-11-19 22:19:58,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:19:58,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 22:19:58,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:19:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 22:19:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:19:58,471 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) [2024-11-19 22:19:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:19:58,906 INFO L93 Difference]: Finished difference Result 588 states and 806 transitions. [2024-11-19 22:19:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 22:19:58,908 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 [2024-11-19 22:19:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:19:58,914 INFO L225 Difference]: With dead ends: 588 [2024-11-19 22:19:58,914 INFO L226 Difference]: Without dead ends: 321 [2024-11-19 22:19:58,915 INFO L431 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 [2024-11-19 22:19:58,916 INFO L432 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:19:58,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 439 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:19:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-19 22:19:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 294. [2024-11-19 22:19:58,954 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) [2024-11-19 22:19:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 398 transitions. [2024-11-19 22:19:58,957 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 398 transitions. Word has length 64 [2024-11-19 22:19:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:19:58,957 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 398 transitions. [2024-11-19 22:19:58,958 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) [2024-11-19 22:19:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 398 transitions. [2024-11-19 22:19:58,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:19:58,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:19:58,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:19:58,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 22:19:58,960 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:19:58,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:19:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1899685336, now seen corresponding path program 1 times [2024-11-19 22:19:58,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:19:58,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065488717] [2024-11-19 22:19:58,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:19:58,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:19:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:59,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:19:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:59,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:19:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:59,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:19:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:59,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:19:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:59,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:19:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:59,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:19:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:59,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:19:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:19:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:19:59,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:19:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065488717] [2024-11-19 22:19:59,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065488717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:19:59,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:19:59,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 22:19:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436152427] [2024-11-19 22:19:59,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:19:59,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 22:19:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:19:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 22:19:59,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:19:59,170 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) [2024-11-19 22:20:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:00,667 INFO L93 Difference]: Finished difference Result 1956 states and 2670 transitions. [2024-11-19 22:20:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 22:20:00,667 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 [2024-11-19 22:20:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:00,678 INFO L225 Difference]: With dead ends: 1956 [2024-11-19 22:20:00,678 INFO L226 Difference]: Without dead ends: 1684 [2024-11-19 22:20:00,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 22:20:00,681 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 1114 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:00,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 786 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 22:20:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2024-11-19 22:20:00,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1434. [2024-11-19 22:20:00,809 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) [2024-11-19 22:20:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1882 transitions. [2024-11-19 22:20:00,820 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1882 transitions. Word has length 64 [2024-11-19 22:20:00,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:00,821 INFO L471 AbstractCegarLoop]: Abstraction has 1434 states and 1882 transitions. [2024-11-19 22:20:00,821 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) [2024-11-19 22:20:00,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1882 transitions. [2024-11-19 22:20:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:20:00,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:00,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:20:00,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 22:20:00,825 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:00,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1343832871, now seen corresponding path program 1 times [2024-11-19 22:20:00,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:00,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399287110] [2024-11-19 22:20:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:00,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:00,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:00,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:00,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:00,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:00,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:01,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399287110] [2024-11-19 22:20:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399287110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:01,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:01,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 22:20:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176750188] [2024-11-19 22:20:01,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:01,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 22:20:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 22:20:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:20:01,015 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) [2024-11-19 22:20:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:01,548 INFO L93 Difference]: Finished difference Result 3031 states and 4001 transitions. [2024-11-19 22:20:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 22:20:01,549 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 [2024-11-19 22:20:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:01,558 INFO L225 Difference]: With dead ends: 3031 [2024-11-19 22:20:01,558 INFO L226 Difference]: Without dead ends: 1619 [2024-11-19 22:20:01,562 INFO L431 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 [2024-11-19 22:20:01,565 INFO L432 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:01,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 488 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:20:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-19 22:20:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1479. [2024-11-19 22:20:01,706 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) [2024-11-19 22:20:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1921 transitions. [2024-11-19 22:20:01,715 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1921 transitions. Word has length 64 [2024-11-19 22:20:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:01,716 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 1921 transitions. [2024-11-19 22:20:01,716 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) [2024-11-19 22:20:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1921 transitions. [2024-11-19 22:20:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:20:01,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:01,717 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:20:01,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 22:20:01,718 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:01,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash 42370523, now seen corresponding path program 1 times [2024-11-19 22:20:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:01,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972724482] [2024-11-19 22:20:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:01,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972724482] [2024-11-19 22:20:01,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972724482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:01,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:01,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 22:20:01,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893704891] [2024-11-19 22:20:01,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:01,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 22:20:01,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:01,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 22:20:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:20:01,886 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) [2024-11-19 22:20:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:02,628 INFO L93 Difference]: Finished difference Result 2914 states and 3760 transitions. [2024-11-19 22:20:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 22:20:02,629 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 [2024-11-19 22:20:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:02,639 INFO L225 Difference]: With dead ends: 2914 [2024-11-19 22:20:02,640 INFO L226 Difference]: Without dead ends: 1677 [2024-11-19 22:20:02,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-19 22:20:02,645 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 416 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:02,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 341 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 22:20:02,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2024-11-19 22:20:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1457. [2024-11-19 22:20:02,765 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) [2024-11-19 22:20:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1881 transitions. [2024-11-19 22:20:02,772 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1881 transitions. Word has length 64 [2024-11-19 22:20:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:02,773 INFO L471 AbstractCegarLoop]: Abstraction has 1457 states and 1881 transitions. [2024-11-19 22:20:02,773 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) [2024-11-19 22:20:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1881 transitions. [2024-11-19 22:20:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:20:02,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:02,775 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:20:02,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 22:20:02,775 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:02,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -91642983, now seen corresponding path program 1 times [2024-11-19 22:20:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:02,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396305091] [2024-11-19 22:20:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:02,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:02,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:02,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:02,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:02,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:02,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:02,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:02,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396305091] [2024-11-19 22:20:02,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396305091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:02,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:02,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:20:02,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806172956] [2024-11-19 22:20:02,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:02,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:20:02,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:02,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:20:02,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:20:02,884 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) [2024-11-19 22:20:03,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:03,503 INFO L93 Difference]: Finished difference Result 4532 states and 5857 transitions. [2024-11-19 22:20:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 22:20:03,504 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 [2024-11-19 22:20:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:03,520 INFO L225 Difference]: With dead ends: 4532 [2024-11-19 22:20:03,520 INFO L226 Difference]: Without dead ends: 3100 [2024-11-19 22:20:03,524 INFO L431 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 [2024-11-19 22:20:03,527 INFO L432 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:03,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 280 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:20:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-11-19 22:20:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2828. [2024-11-19 22:20:03,750 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) [2024-11-19 22:20:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3619 transitions. [2024-11-19 22:20:03,764 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3619 transitions. Word has length 64 [2024-11-19 22:20:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:03,765 INFO L471 AbstractCegarLoop]: Abstraction has 2828 states and 3619 transitions. [2024-11-19 22:20:03,765 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) [2024-11-19 22:20:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3619 transitions. [2024-11-19 22:20:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 22:20:03,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:03,769 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:20:03,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 22:20:03,769 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:03,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2137648849, now seen corresponding path program 1 times [2024-11-19 22:20:03,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:03,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289854618] [2024-11-19 22:20:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:03,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:03,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:03,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:03,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:03,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:03,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:03,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:03,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:03,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289854618] [2024-11-19 22:20:03,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289854618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:03,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:03,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:20:03,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000873054] [2024-11-19 22:20:03,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:03,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:20:03,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:20:03,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:20:03,862 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) [2024-11-19 22:20:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:04,594 INFO L93 Difference]: Finished difference Result 7846 states and 10129 transitions. [2024-11-19 22:20:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 22:20:04,595 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 [2024-11-19 22:20:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:04,620 INFO L225 Difference]: With dead ends: 7846 [2024-11-19 22:20:04,621 INFO L226 Difference]: Without dead ends: 5022 [2024-11-19 22:20:04,628 INFO L431 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 [2024-11-19 22:20:04,629 INFO L432 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:04,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 296 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:20:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5022 states. [2024-11-19 22:20:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 4506. [2024-11-19 22:20:05,060 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) [2024-11-19 22:20:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 5736 transitions. [2024-11-19 22:20:05,080 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 5736 transitions. Word has length 65 [2024-11-19 22:20:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:05,081 INFO L471 AbstractCegarLoop]: Abstraction has 4506 states and 5736 transitions. [2024-11-19 22:20:05,081 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) [2024-11-19 22:20:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 5736 transitions. [2024-11-19 22:20:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-19 22:20:05,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:05,083 INFO L215 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] [2024-11-19 22:20:05,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 22:20:05,084 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:05,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -78334537, now seen corresponding path program 1 times [2024-11-19 22:20:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:05,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68779413] [2024-11-19 22:20:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:05,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:05,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:05,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:05,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:05,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:05,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:05,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:05,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:05,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:05,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68779413] [2024-11-19 22:20:05,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68779413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:05,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:05,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:20:05,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31309557] [2024-11-19 22:20:05,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:05,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:20:05,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:05,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:20:05,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:20:05,181 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) [2024-11-19 22:20:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:06,020 INFO L93 Difference]: Finished difference Result 6136 states and 7738 transitions. [2024-11-19 22:20:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 22:20:06,020 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 [2024-11-19 22:20:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:06,055 INFO L225 Difference]: With dead ends: 6136 [2024-11-19 22:20:06,055 INFO L226 Difference]: Without dead ends: 6133 [2024-11-19 22:20:06,059 INFO L431 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 [2024-11-19 22:20:06,060 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 475 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2024-11-19 22:20:06,061 INFO L433 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] [2024-11-19 22:20:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2024-11-19 22:20:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 5560. [2024-11-19 22:20:06,749 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) [2024-11-19 22:20:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 7025 transitions. [2024-11-19 22:20:06,771 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 7025 transitions. Word has length 72 [2024-11-19 22:20:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:06,772 INFO L471 AbstractCegarLoop]: Abstraction has 5560 states and 7025 transitions. [2024-11-19 22:20:06,772 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) [2024-11-19 22:20:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 7025 transitions. [2024-11-19 22:20:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-19 22:20:06,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:06,774 INFO L215 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] [2024-11-19 22:20:06,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 22:20:06,775 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:06,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:06,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1866244794, now seen corresponding path program 1 times [2024-11-19 22:20:06,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:06,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032686639] [2024-11-19 22:20:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:06,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:06,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:06,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:06,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:06,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:06,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:06,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:06,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:06,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032686639] [2024-11-19 22:20:06,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032686639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:20:06,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325702438] [2024-11-19 22:20:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:06,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:20:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:20:06,927 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) [2024-11-19 22:20:06,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 22:20:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:07,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 22:20:07,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:20:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:07,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:20:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:07,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325702438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:20:07,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:20:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-11-19 22:20:07,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521644894] [2024-11-19 22:20:07,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:20:07,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 22:20:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 22:20:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 22:20:07,491 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) [2024-11-19 22:20:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:09,806 INFO L93 Difference]: Finished difference Result 13206 states and 16553 transitions. [2024-11-19 22:20:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 22:20:09,807 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 [2024-11-19 22:20:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:09,885 INFO L225 Difference]: With dead ends: 13206 [2024-11-19 22:20:09,885 INFO L226 Difference]: Without dead ends: 13203 [2024-11-19 22:20:09,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2024-11-19 22:20:09,893 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 840 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:09,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 790 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 22:20:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13203 states. [2024-11-19 22:20:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13203 to 10818. [2024-11-19 22:20:11,117 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) [2024-11-19 22:20:11,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10818 states to 10818 states and 13639 transitions. [2024-11-19 22:20:11,160 INFO L78 Accepts]: Start accepts. Automaton has 10818 states and 13639 transitions. Word has length 73 [2024-11-19 22:20:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:11,160 INFO L471 AbstractCegarLoop]: Abstraction has 10818 states and 13639 transitions. [2024-11-19 22:20:11,161 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) [2024-11-19 22:20:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10818 states and 13639 transitions. [2024-11-19 22:20:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:20:11,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:11,164 INFO L215 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] [2024-11-19 22:20:11,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 22:20:11,367 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 [2024-11-19 22:20:11,368 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:11,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1600677641, now seen corresponding path program 2 times [2024-11-19 22:20:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:11,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852092969] [2024-11-19 22:20:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:11,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:11,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:11,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:11,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:11,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:11,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:11,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:11,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:20:11,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:11,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852092969] [2024-11-19 22:20:11,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852092969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:11,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:11,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:20:11,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840986931] [2024-11-19 22:20:11,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:11,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:20:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:11,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:20:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:20:11,444 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) [2024-11-19 22:20:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:12,383 INFO L93 Difference]: Finished difference Result 17361 states and 21981 transitions. [2024-11-19 22:20:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 22:20:12,384 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 [2024-11-19 22:20:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:12,412 INFO L225 Difference]: With dead ends: 17361 [2024-11-19 22:20:12,412 INFO L226 Difference]: Without dead ends: 7423 [2024-11-19 22:20:12,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-19 22:20:12,431 INFO L432 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:12,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 374 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:20:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2024-11-19 22:20:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 6871. [2024-11-19 22:20:13,082 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) [2024-11-19 22:20:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6871 states to 6871 states and 8465 transitions. [2024-11-19 22:20:13,114 INFO L78 Accepts]: Start accepts. Automaton has 6871 states and 8465 transitions. Word has length 76 [2024-11-19 22:20:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:13,116 INFO L471 AbstractCegarLoop]: Abstraction has 6871 states and 8465 transitions. [2024-11-19 22:20:13,116 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) [2024-11-19 22:20:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 6871 states and 8465 transitions. [2024-11-19 22:20:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-19 22:20:13,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:13,120 INFO L215 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] [2024-11-19 22:20:13,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 22:20:13,120 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:13,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:13,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1691663828, now seen corresponding path program 1 times [2024-11-19 22:20:13,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:13,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85092163] [2024-11-19 22:20:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:13,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-19 22:20:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 22:20:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85092163] [2024-11-19 22:20:13,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85092163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:13,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:13,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 22:20:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976328155] [2024-11-19 22:20:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:13,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 22:20:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 22:20:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:20:13,258 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) [2024-11-19 22:20:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:15,542 INFO L93 Difference]: Finished difference Result 20729 states and 25646 transitions. [2024-11-19 22:20:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 22:20:15,542 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 [2024-11-19 22:20:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:15,608 INFO L225 Difference]: With dead ends: 20729 [2024-11-19 22:20:15,609 INFO L226 Difference]: Without dead ends: 13886 [2024-11-19 22:20:15,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-11-19 22:20:15,634 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 522 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:15,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 441 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 22:20:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13886 states. [2024-11-19 22:20:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13886 to 13027. [2024-11-19 22:20:16,788 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) [2024-11-19 22:20:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13027 states to 13027 states and 16041 transitions. [2024-11-19 22:20:16,839 INFO L78 Accepts]: Start accepts. Automaton has 13027 states and 16041 transitions. Word has length 83 [2024-11-19 22:20:16,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:16,840 INFO L471 AbstractCegarLoop]: Abstraction has 13027 states and 16041 transitions. [2024-11-19 22:20:16,841 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) [2024-11-19 22:20:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 13027 states and 16041 transitions. [2024-11-19 22:20:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-19 22:20:16,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:16,847 INFO L215 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] [2024-11-19 22:20:16,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 22:20:16,847 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:16,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1092647019, now seen corresponding path program 1 times [2024-11-19 22:20:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:16,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830717417] [2024-11-19 22:20:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:16,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-19 22:20:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 22:20:16,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:16,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830717417] [2024-11-19 22:20:16,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830717417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:16,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:16,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 22:20:16,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542844245] [2024-11-19 22:20:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:16,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 22:20:16,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 22:20:16,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:20:16,967 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) [2024-11-19 22:20:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:18,913 INFO L93 Difference]: Finished difference Result 23901 states and 29354 transitions. [2024-11-19 22:20:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 22:20:18,913 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 [2024-11-19 22:20:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:18,969 INFO L225 Difference]: With dead ends: 23901 [2024-11-19 22:20:18,970 INFO L226 Difference]: Without dead ends: 11510 [2024-11-19 22:20:19,001 INFO L431 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 [2024-11-19 22:20:19,002 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 1065 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:19,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 525 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 22:20:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2024-11-19 22:20:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 10610. [2024-11-19 22:20:20,143 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) [2024-11-19 22:20:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 12802 transitions. [2024-11-19 22:20:20,196 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 12802 transitions. Word has length 92 [2024-11-19 22:20:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:20,197 INFO L471 AbstractCegarLoop]: Abstraction has 10610 states and 12802 transitions. [2024-11-19 22:20:20,197 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) [2024-11-19 22:20:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 12802 transitions. [2024-11-19 22:20:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-19 22:20:20,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:20,212 INFO L215 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] [2024-11-19 22:20:20,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 22:20:20,212 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:20,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash 578230399, now seen corresponding path program 1 times [2024-11-19 22:20:20,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:20,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784506102] [2024-11-19 22:20:20,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-19 22:20:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-19 22:20:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-19 22:20:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-19 22:20:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-19 22:20:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-19 22:20:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-19 22:20:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-19 22:20:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:20,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784506102] [2024-11-19 22:20:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784506102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:20:20,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673126822] [2024-11-19 22:20:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:20,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:20:20,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:20:20,421 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) [2024-11-19 22:20:20,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 22:20:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:20,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 22:20:20,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:20:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 22:20:20,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 22:20:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673126822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:20,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 22:20:20,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-11-19 22:20:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263341236] [2024-11-19 22:20:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:20,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:20:20,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:20,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:20:20,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-19 22:20:20,577 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) [2024-11-19 22:20:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:21,305 INFO L93 Difference]: Finished difference Result 15403 states and 18554 transitions. [2024-11-19 22:20:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:20:21,305 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 [2024-11-19 22:20:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:21,339 INFO L225 Difference]: With dead ends: 15403 [2024-11-19 22:20:21,340 INFO L226 Difference]: Without dead ends: 4821 [2024-11-19 22:20:21,373 INFO L431 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 [2024-11-19 22:20:21,374 INFO L432 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 [2024-11-19 22:20:21,374 INFO L433 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] [2024-11-19 22:20:21,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2024-11-19 22:20:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4667. [2024-11-19 22:20:22,037 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) [2024-11-19 22:20:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 5545 transitions. [2024-11-19 22:20:22,065 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 5545 transitions. Word has length 144 [2024-11-19 22:20:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:22,066 INFO L471 AbstractCegarLoop]: Abstraction has 4667 states and 5545 transitions. [2024-11-19 22:20:22,066 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) [2024-11-19 22:20:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 5545 transitions. [2024-11-19 22:20:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-19 22:20:22,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:22,077 INFO L215 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] [2024-11-19 22:20:22,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 22:20:22,278 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 [2024-11-19 22:20:22,279 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:22,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash -371595989, now seen corresponding path program 1 times [2024-11-19 22:20:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:22,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824267057] [2024-11-19 22:20:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:22,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-19 22:20:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-19 22:20:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 22:20:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-19 22:20:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-19 22:20:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-19 22:20:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-19 22:20:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-19 22:20:22,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:22,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824267057] [2024-11-19 22:20:22,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824267057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:22,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:22,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:20:22,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532702466] [2024-11-19 22:20:22,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:22,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:20:22,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:22,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:20:22,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:20:22,383 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) [2024-11-19 22:20:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:23,041 INFO L93 Difference]: Finished difference Result 5210 states and 6157 transitions. [2024-11-19 22:20:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:20:23,042 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 [2024-11-19 22:20:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:23,060 INFO L225 Difference]: With dead ends: 5210 [2024-11-19 22:20:23,060 INFO L226 Difference]: Without dead ends: 4461 [2024-11-19 22:20:23,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:20:23,064 INFO L432 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:23,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 210 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 22:20:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2024-11-19 22:20:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 4242. [2024-11-19 22:20:23,438 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) [2024-11-19 22:20:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 5055 transitions. [2024-11-19 22:20:23,466 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 5055 transitions. Word has length 146 [2024-11-19 22:20:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:23,467 INFO L471 AbstractCegarLoop]: Abstraction has 4242 states and 5055 transitions. [2024-11-19 22:20:23,467 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) [2024-11-19 22:20:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 5055 transitions. [2024-11-19 22:20:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-19 22:20:23,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:23,476 INFO L215 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] [2024-11-19 22:20:23,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 22:20:23,476 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:23,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash 83168210, now seen corresponding path program 1 times [2024-11-19 22:20:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:23,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919255878] [2024-11-19 22:20:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:23,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 22:20:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:20:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 22:20:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-19 22:20:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-19 22:20:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-19 22:20:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-19 22:20:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-19 22:20:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-19 22:20:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-19 22:20:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-19 22:20:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 22:20:23,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919255878] [2024-11-19 22:20:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919255878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:20:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046799373] [2024-11-19 22:20:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:23,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:20:23,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:20:23,609 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) [2024-11-19 22:20:23,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 22:20:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:23,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 22:20:23,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:20:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 22:20:23,818 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 22:20:23,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046799373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:23,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 22:20:23,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 22:20:23,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424697602] [2024-11-19 22:20:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:23,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:20:23,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:20:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:20:23,820 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) [2024-11-19 22:20:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:24,099 INFO L93 Difference]: Finished difference Result 6078 states and 7215 transitions. [2024-11-19 22:20:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:20:24,099 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 [2024-11-19 22:20:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:24,118 INFO L225 Difference]: With dead ends: 6078 [2024-11-19 22:20:24,118 INFO L226 Difference]: Without dead ends: 2113 [2024-11-19 22:20:24,126 INFO L431 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 [2024-11-19 22:20:24,127 INFO L432 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 [2024-11-19 22:20:24,127 INFO L433 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] [2024-11-19 22:20:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2024-11-19 22:20:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2113. [2024-11-19 22:20:24,334 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) [2024-11-19 22:20:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2467 transitions. [2024-11-19 22:20:24,351 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2467 transitions. Word has length 157 [2024-11-19 22:20:24,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:24,352 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 2467 transitions. [2024-11-19 22:20:24,352 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) [2024-11-19 22:20:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2467 transitions. [2024-11-19 22:20:24,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-19 22:20:24,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:24,357 INFO L215 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] [2024-11-19 22:20:24,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 22:20:24,558 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 [2024-11-19 22:20:24,559 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:24,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:24,559 INFO L85 PathProgramCache]: Analyzing trace with hash 702759848, now seen corresponding path program 1 times [2024-11-19 22:20:24,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:24,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516630406] [2024-11-19 22:20:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:24,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-19 22:20:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-19 22:20:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-19 22:20:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-19 22:20:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-19 22:20:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-19 22:20:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-19 22:20:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-19 22:20:24,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:24,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516630406] [2024-11-19 22:20:24,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516630406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:24,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:20:24,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:20:24,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845968942] [2024-11-19 22:20:24,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:24,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:20:24,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:20:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:20:24,683 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) [2024-11-19 22:20:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:25,290 INFO L93 Difference]: Finished difference Result 3977 states and 4677 transitions. [2024-11-19 22:20:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 22:20:25,291 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 [2024-11-19 22:20:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:25,308 INFO L225 Difference]: With dead ends: 3977 [2024-11-19 22:20:25,308 INFO L226 Difference]: Without dead ends: 2216 [2024-11-19 22:20:25,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:20:25,316 INFO L432 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 [2024-11-19 22:20:25,317 INFO L433 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] [2024-11-19 22:20:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2024-11-19 22:20:25,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1672. [2024-11-19 22:20:25,588 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) [2024-11-19 22:20:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 1958 transitions. [2024-11-19 22:20:25,604 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 1958 transitions. Word has length 158 [2024-11-19 22:20:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:25,605 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 1958 transitions. [2024-11-19 22:20:25,605 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) [2024-11-19 22:20:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 1958 transitions. [2024-11-19 22:20:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-19 22:20:25,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:25,610 INFO L215 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] [2024-11-19 22:20:25,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 22:20:25,610 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:25,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1973905068, now seen corresponding path program 1 times [2024-11-19 22:20:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574309800] [2024-11-19 22:20:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:25,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-19 22:20:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-19 22:20:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 22:20:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-19 22:20:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-19 22:20:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-19 22:20:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-19 22:20:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-19 22:20:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574309800] [2024-11-19 22:20:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574309800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:20:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922110645] [2024-11-19 22:20:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:25,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:20:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:20:25,884 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) [2024-11-19 22:20:25,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 22:20:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:25,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 22:20:25,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:20:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-19 22:20:26,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:20:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-19 22:20:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922110645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:20:26,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:20:26,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-11-19 22:20:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917472384] [2024-11-19 22:20:26,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:20:26,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 22:20:26,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 22:20:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 22:20:26,431 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) [2024-11-19 22:20:27,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:27,304 INFO L93 Difference]: Finished difference Result 3707 states and 4436 transitions. [2024-11-19 22:20:27,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 22:20:27,305 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 [2024-11-19 22:20:27,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:27,323 INFO L225 Difference]: With dead ends: 3707 [2024-11-19 22:20:27,323 INFO L226 Difference]: Without dead ends: 1959 [2024-11-19 22:20:27,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 355 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2024-11-19 22:20:27,329 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 758 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 22:20:27,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 412 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 22:20:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2024-11-19 22:20:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1759. [2024-11-19 22:20:27,522 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) [2024-11-19 22:20:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2045 transitions. [2024-11-19 22:20:27,539 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2045 transitions. Word has length 161 [2024-11-19 22:20:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:27,540 INFO L471 AbstractCegarLoop]: Abstraction has 1759 states and 2045 transitions. [2024-11-19 22:20:27,540 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) [2024-11-19 22:20:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2045 transitions. [2024-11-19 22:20:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-19 22:20:27,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:27,546 INFO L215 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] [2024-11-19 22:20:27,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 22:20:27,750 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 [2024-11-19 22:20:27,751 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:27,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 11419214, now seen corresponding path program 1 times [2024-11-19 22:20:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595364418] [2024-11-19 22:20:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:27,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 22:20:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:20:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 22:20:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-19 22:20:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 22:20:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-19 22:20:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-19 22:20:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-19 22:20:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-11-19 22:20:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-19 22:20:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-19 22:20:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-19 22:20:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-19 22:20:27,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:27,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595364418] [2024-11-19 22:20:27,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595364418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:20:27,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705168249] [2024-11-19 22:20:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:27,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:20:27,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:20:27,948 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) [2024-11-19 22:20:27,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 22:20:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 22:20:28,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:20:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-19 22:20:28,091 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 22:20:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705168249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:20:28,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 22:20:28,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-19 22:20:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626314568] [2024-11-19 22:20:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:20:28,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:20:28,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:28,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:20:28,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 22:20:28,094 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) [2024-11-19 22:20:28,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:28,407 INFO L93 Difference]: Finished difference Result 3404 states and 3968 transitions. [2024-11-19 22:20:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:20:28,408 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 [2024-11-19 22:20:28,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:28,420 INFO L225 Difference]: With dead ends: 3404 [2024-11-19 22:20:28,420 INFO L226 Difference]: Without dead ends: 1476 [2024-11-19 22:20:28,425 INFO L431 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 [2024-11-19 22:20:28,425 INFO L432 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 [2024-11-19 22:20:28,426 INFO L433 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] [2024-11-19 22:20:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2024-11-19 22:20:28,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1439. [2024-11-19 22:20:28,583 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) [2024-11-19 22:20:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1648 transitions. [2024-11-19 22:20:28,596 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1648 transitions. Word has length 178 [2024-11-19 22:20:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:28,597 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 1648 transitions. [2024-11-19 22:20:28,597 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) [2024-11-19 22:20:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1648 transitions. [2024-11-19 22:20:28,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-19 22:20:28,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:20:28,602 INFO L215 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] [2024-11-19 22:20:28,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 22:20:28,802 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 [2024-11-19 22:20:28,803 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:20:28,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:20:28,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1242735248, now seen corresponding path program 1 times [2024-11-19 22:20:28,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:20:28,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057816503] [2024-11-19 22:20:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:28,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:20:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:20:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:20:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-19 22:20:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:20:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-19 22:20:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-19 22:20:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-19 22:20:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-19 22:20:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-19 22:20:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-19 22:20:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-19 22:20:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-11-19 22:20:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-19 22:20:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-11-19 22:20:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-19 22:20:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-11-19 22:20:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 22:20:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 22:20:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-11-19 22:20:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-11-19 22:20:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-11-19 22:20:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 75 proven. 16 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-19 22:20:28,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:20:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057816503] [2024-11-19 22:20:28,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057816503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:20:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691909103] [2024-11-19 22:20:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:20:28,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:20:28,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:20:28,981 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) [2024-11-19 22:20:28,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 22:20:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:20:29,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 22:20:29,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:20:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 256 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-19 22:20:29,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:20:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-19 22:20:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691909103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:20:29,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:20:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2024-11-19 22:20:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993238820] [2024-11-19 22:20:29,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:20:29,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 22:20:29,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:20:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 22:20:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:20:29,479 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) [2024-11-19 22:20:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:20:30,008 INFO L93 Difference]: Finished difference Result 1742 states and 1983 transitions. [2024-11-19 22:20:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 22:20:30,009 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 [2024-11-19 22:20:30,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:20:30,020 INFO L225 Difference]: With dead ends: 1742 [2024-11-19 22:20:30,021 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 22:20:30,023 INFO L431 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 [2024-11-19 22:20:30,024 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 331 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2024-11-19 22:20:30,024 INFO L433 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] [2024-11-19 22:20:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 22:20:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 22:20:30,025 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) [2024-11-19 22:20:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 22:20:30,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 252 [2024-11-19 22:20:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:20:30,036 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 22:20:30,036 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) [2024-11-19 22:20:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 22:20:30,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 22:20:30,039 INFO L782 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 22:20:30,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 22:20:30,240 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 [2024-11-19 22:20:30,244 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:20:30,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.