./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.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 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:33:09,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:33:09,535 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:33:09,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:33:09,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:33:09,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:33:09,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:33:09,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:33:09,573 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:33:09,575 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:33:09,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:33:09,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:33:09,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:33:09,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:33:09,578 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:33:09,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:33:09,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:33:09,578 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:33:09,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:33:09,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:33:09,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:33:09,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:33:09,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:33:09,582 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:33:09,582 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:33:09,583 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:33:09,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:33:09,583 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:33:09,583 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:33:09,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:33:09,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:33:09,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:33:09,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:09,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:33:09,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:33:09,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:33:09,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:33:09,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:33:09,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:33:09,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:33:09,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:33:09,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:33:09,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb [2024-11-16 09:33:09,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:33:09,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:33:09,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:33:09,828 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:33:09,829 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:33:09,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:33:11,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:33:11,552 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:33:11,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:33:11,574 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a594aff98/c0b00927a87f43d8b18dde76fd6c8fa1/FLAG15e605dab [2024-11-16 09:33:11,757 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a594aff98/c0b00927a87f43d8b18dde76fd6c8fa1 [2024-11-16 09:33:11,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:33:11,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:33:11,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:33:11,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:33:11,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:33:11,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:33:11" (1/1) ... [2024-11-16 09:33:11,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2193464c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:11, skipping insertion in model container [2024-11-16 09:33:11,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:33:11" (1/1) ... [2024-11-16 09:33:11,888 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:33:12,111 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2024-11-16 09:33:12,178 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2024-11-16 09:33:12,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:33:12,747 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:33:12,772 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2024-11-16 09:33:12,780 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2024-11-16 09:33:13,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:33:13,087 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:33:13,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13 WrapperNode [2024-11-16 09:33:13,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:33:13,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:33:13,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:33:13,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:33:13,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,417 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4982 [2024-11-16 09:33:13,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:33:13,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:33:13,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:33:13,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:33:13,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,479 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,681 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 09:33:13,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,805 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:33:13,892 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:33:13,892 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:33:13,892 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:33:13,893 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (1/1) ... [2024-11-16 09:33:13,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:13,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:13,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:33:13,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:33:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:33:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:33:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:33:13,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:33:14,091 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:33:14,094 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:33:18,209 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1989: havoc calculate_output_#t~ret29#1; [2024-11-16 09:33:18,210 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3468: havoc calculate_output2_#t~ret30#1; [2024-11-16 09:33:18,210 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4958: havoc calculate_output3_#t~ret31#1; [2024-11-16 09:33:18,352 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-16 09:33:18,352 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:33:18,388 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:33:18,388 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:33:18,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:18 BoogieIcfgContainer [2024-11-16 09:33:18,389 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:33:18,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:33:18,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:33:18,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:33:18,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:33:11" (1/3) ... [2024-11-16 09:33:18,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a128d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:18, skipping insertion in model container [2024-11-16 09:33:18,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:13" (2/3) ... [2024-11-16 09:33:18,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a128d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:18, skipping insertion in model container [2024-11-16 09:33:18,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:18" (3/3) ... [2024-11-16 09:33:18,399 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:33:18,412 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:33:18,412 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:33:18,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:33:18,521 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;@60ac3982, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:33:18,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:33:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 878 states have (on average 1.898633257403189) internal successors, (1667), 880 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:18,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:18,538 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:18,538 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:18,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:18,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1430645132, now seen corresponding path program 1 times [2024-11-16 09:33:18,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:18,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486884187] [2024-11-16 09:33:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:18,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:18,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:18,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486884187] [2024-11-16 09:33:18,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486884187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:18,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:18,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:33:18,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164838578] [2024-11-16 09:33:18,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:18,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:33:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:33:18,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:33:18,810 INFO L87 Difference]: Start difference. First operand has 881 states, 878 states have (on average 1.898633257403189) internal successors, (1667), 880 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:18,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:18,876 INFO L93 Difference]: Finished difference Result 1736 states and 3290 transitions. [2024-11-16 09:33:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:33:18,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 09:33:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:18,900 INFO L225 Difference]: With dead ends: 1736 [2024-11-16 09:33:18,903 INFO L226 Difference]: Without dead ends: 813 [2024-11-16 09:33:18,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:33:18,913 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:18,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-16 09:33:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2024-11-16 09:33:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 811 states have (on average 1.8890258939580764) internal successors, (1532), 812 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1532 transitions. [2024-11-16 09:33:18,984 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1532 transitions. Word has length 22 [2024-11-16 09:33:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:18,984 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1532 transitions. [2024-11-16 09:33:18,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1532 transitions. [2024-11-16 09:33:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:18,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:18,986 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] [2024-11-16 09:33:18,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:33:18,986 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:18,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash 920110955, now seen corresponding path program 1 times [2024-11-16 09:33:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:18,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925576280] [2024-11-16 09:33:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:18,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:19,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925576280] [2024-11-16 09:33:19,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925576280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:19,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:19,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565186596] [2024-11-16 09:33:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:19,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:19,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:19,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:19,188 INFO L87 Difference]: Start difference. First operand 813 states and 1532 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:19,294 INFO L93 Difference]: Finished difference Result 852 states and 1589 transitions. [2024-11-16 09:33:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:19,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 09:33:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:19,297 INFO L225 Difference]: With dead ends: 852 [2024-11-16 09:33:19,297 INFO L226 Difference]: Without dead ends: 813 [2024-11-16 09:33:19,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:19,299 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 0 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6099 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:19,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6099 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:33:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-16 09:33:19,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2024-11-16 09:33:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 811 states have (on average 1.8692971639950677) internal successors, (1516), 812 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1516 transitions. [2024-11-16 09:33:19,329 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1516 transitions. Word has length 22 [2024-11-16 09:33:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:19,329 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1516 transitions. [2024-11-16 09:33:19,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1516 transitions. [2024-11-16 09:33:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 09:33:19,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:19,331 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] [2024-11-16 09:33:19,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:33:19,332 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:19,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1481333562, now seen corresponding path program 1 times [2024-11-16 09:33:19,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:19,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189969930] [2024-11-16 09:33:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:19,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:19,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189969930] [2024-11-16 09:33:19,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189969930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:19,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:19,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364885299] [2024-11-16 09:33:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:19,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:19,460 INFO L87 Difference]: Start difference. First operand 813 states and 1516 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:19,608 INFO L93 Difference]: Finished difference Result 1023 states and 1834 transitions. [2024-11-16 09:33:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:33:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-16 09:33:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:19,611 INFO L225 Difference]: With dead ends: 1023 [2024-11-16 09:33:19,611 INFO L226 Difference]: Without dead ends: 988 [2024-11-16 09:33:19,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:19,613 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 4668 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:19,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 1812 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2024-11-16 09:33:19,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 845. [2024-11-16 09:33:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.856465005931198) internal successors, (1565), 844 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1565 transitions. [2024-11-16 09:33:19,626 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1565 transitions. Word has length 37 [2024-11-16 09:33:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:19,626 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1565 transitions. [2024-11-16 09:33:19,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1565 transitions. [2024-11-16 09:33:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 09:33:19,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:19,627 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] [2024-11-16 09:33:19,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:33:19,627 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:19,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 361982440, now seen corresponding path program 1 times [2024-11-16 09:33:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005337181] [2024-11-16 09:33:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:19,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:19,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005337181] [2024-11-16 09:33:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005337181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601497889] [2024-11-16 09:33:19,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:19,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:19,796 INFO L87 Difference]: Start difference. First operand 845 states and 1565 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:19,855 INFO L93 Difference]: Finished difference Result 915 states and 1669 transitions. [2024-11-16 09:33:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:19,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 09:33:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:19,858 INFO L225 Difference]: With dead ends: 915 [2024-11-16 09:33:19,858 INFO L226 Difference]: Without dead ends: 848 [2024-11-16 09:33:19,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:33:19,862 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 4438 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:19,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 1609 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-16 09:33:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 845. [2024-11-16 09:33:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8552787663107948) internal successors, (1564), 844 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1564 transitions. [2024-11-16 09:33:19,880 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1564 transitions. Word has length 39 [2024-11-16 09:33:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:19,880 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1564 transitions. [2024-11-16 09:33:19,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1564 transitions. [2024-11-16 09:33:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 09:33:19,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:19,883 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] [2024-11-16 09:33:19,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:33:19,883 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:19,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:19,883 INFO L85 PathProgramCache]: Analyzing trace with hash 60372957, now seen corresponding path program 1 times [2024-11-16 09:33:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:19,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104654069] [2024-11-16 09:33:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:19,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104654069] [2024-11-16 09:33:19,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104654069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:19,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:19,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051859885] [2024-11-16 09:33:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:19,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:19,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:19,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:19,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:19,945 INFO L87 Difference]: Start difference. First operand 845 states and 1564 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:19,970 INFO L93 Difference]: Finished difference Result 967 states and 1746 transitions. [2024-11-16 09:33:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 09:33:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:19,973 INFO L225 Difference]: With dead ends: 967 [2024-11-16 09:33:19,973 INFO L226 Difference]: Without dead ends: 900 [2024-11-16 09:33:19,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:19,974 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 1472 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:19,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1558 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:19,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2024-11-16 09:33:19,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 895. [2024-11-16 09:33:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 893 states have (on average 1.832026875699888) internal successors, (1636), 894 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1636 transitions. [2024-11-16 09:33:19,986 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1636 transitions. Word has length 40 [2024-11-16 09:33:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:19,987 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1636 transitions. [2024-11-16 09:33:19,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1636 transitions. [2024-11-16 09:33:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:19,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:19,988 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] [2024-11-16 09:33:19,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:33:19,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:19,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:19,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1296615530, now seen corresponding path program 1 times [2024-11-16 09:33:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:19,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945247068] [2024-11-16 09:33:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:19,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:20,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:20,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945247068] [2024-11-16 09:33:20,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945247068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:20,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:20,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:20,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163348827] [2024-11-16 09:33:20,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:20,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:20,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:20,021 INFO L87 Difference]: Start difference. First operand 895 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:20,038 INFO L93 Difference]: Finished difference Result 1113 states and 1954 transitions. [2024-11-16 09:33:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:20,042 INFO L225 Difference]: With dead ends: 1113 [2024-11-16 09:33:20,042 INFO L226 Difference]: Without dead ends: 996 [2024-11-16 09:33:20,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:20,043 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:20,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1603 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:20,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-11-16 09:33:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 993. [2024-11-16 09:33:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 991 states have (on average 1.7911200807265388) internal successors, (1775), 992 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1775 transitions. [2024-11-16 09:33:20,057 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1775 transitions. Word has length 41 [2024-11-16 09:33:20,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:20,057 INFO L471 AbstractCegarLoop]: Abstraction has 993 states and 1775 transitions. [2024-11-16 09:33:20,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1775 transitions. [2024-11-16 09:33:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:20,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:20,058 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] [2024-11-16 09:33:20,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:33:20,059 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:20,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash -906749014, now seen corresponding path program 1 times [2024-11-16 09:33:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326005135] [2024-11-16 09:33:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:20,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:20,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326005135] [2024-11-16 09:33:20,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326005135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:20,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:20,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:20,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278314722] [2024-11-16 09:33:20,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:20,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:20,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:20,089 INFO L87 Difference]: Start difference. First operand 993 states and 1775 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:20,109 INFO L93 Difference]: Finished difference Result 1391 states and 2343 transitions. [2024-11-16 09:33:20,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:20,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:20,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:20,112 INFO L225 Difference]: With dead ends: 1391 [2024-11-16 09:33:20,113 INFO L226 Difference]: Without dead ends: 1176 [2024-11-16 09:33:20,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:20,113 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 1479 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:20,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1605 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-16 09:33:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1173. [2024-11-16 09:33:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1171 states have (on average 1.725875320239112) internal successors, (2021), 1172 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 2021 transitions. [2024-11-16 09:33:20,131 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 2021 transitions. Word has length 41 [2024-11-16 09:33:20,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:20,131 INFO L471 AbstractCegarLoop]: Abstraction has 1173 states and 2021 transitions. [2024-11-16 09:33:20,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 2021 transitions. [2024-11-16 09:33:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:20,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:20,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:20,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:33:20,133 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:20,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1431026069, now seen corresponding path program 1 times [2024-11-16 09:33:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645858926] [2024-11-16 09:33:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:20,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:20,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645858926] [2024-11-16 09:33:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645858926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:20,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:20,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:33:20,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989211594] [2024-11-16 09:33:20,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:20,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:33:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:33:20,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:20,305 INFO L87 Difference]: Start difference. First operand 1173 states and 2021 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:20,355 INFO L93 Difference]: Finished difference Result 1200 states and 2055 transitions. [2024-11-16 09:33:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 09:33:20,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:20,359 INFO L225 Difference]: With dead ends: 1200 [2024-11-16 09:33:20,359 INFO L226 Difference]: Without dead ends: 1197 [2024-11-16 09:33:20,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:20,361 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 0 mSDsluCounter, 9047 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10557 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:20,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10557 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-16 09:33:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2024-11-16 09:33:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1195 states have (on average 1.707949790794979) internal successors, (2041), 1196 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2041 transitions. [2024-11-16 09:33:20,378 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2041 transitions. Word has length 41 [2024-11-16 09:33:20,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:20,378 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 2041 transitions. [2024-11-16 09:33:20,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2041 transitions. [2024-11-16 09:33:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 09:33:20,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:20,379 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] [2024-11-16 09:33:20,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:33:20,379 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:20,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash 422057994, now seen corresponding path program 1 times [2024-11-16 09:33:20,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:20,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606608528] [2024-11-16 09:33:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:20,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:20,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:20,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606608528] [2024-11-16 09:33:20,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606608528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:20,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:20,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:20,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389614637] [2024-11-16 09:33:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:20,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:20,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:20,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:20,428 INFO L87 Difference]: Start difference. First operand 1197 states and 2041 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:20,451 INFO L93 Difference]: Finished difference Result 1655 states and 2682 transitions. [2024-11-16 09:33:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 09:33:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:20,459 INFO L225 Difference]: With dead ends: 1655 [2024-11-16 09:33:20,459 INFO L226 Difference]: Without dead ends: 1403 [2024-11-16 09:33:20,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:20,461 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 1480 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:20,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1604 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:20,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2024-11-16 09:33:20,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1400. [2024-11-16 09:33:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1398 states have (on average 1.65379113018598) internal successors, (2312), 1399 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2312 transitions. [2024-11-16 09:33:20,481 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2312 transitions. Word has length 43 [2024-11-16 09:33:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:20,481 INFO L471 AbstractCegarLoop]: Abstraction has 1400 states and 2312 transitions. [2024-11-16 09:33:20,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2312 transitions. [2024-11-16 09:33:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:20,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:20,483 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:20,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:33:20,483 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:20,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1397666540, now seen corresponding path program 1 times [2024-11-16 09:33:20,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:20,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158931855] [2024-11-16 09:33:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:33:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158931855] [2024-11-16 09:33:20,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158931855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:20,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:20,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:20,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915225695] [2024-11-16 09:33:20,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:20,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:20,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:20,563 INFO L87 Difference]: Start difference. First operand 1400 states and 2312 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:20,627 INFO L93 Difference]: Finished difference Result 3404 states and 5040 transitions. [2024-11-16 09:33:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:20,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:20,634 INFO L225 Difference]: With dead ends: 3404 [2024-11-16 09:33:20,634 INFO L226 Difference]: Without dead ends: 2785 [2024-11-16 09:33:20,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:20,635 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 3068 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3068 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:20,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3068 Valid, 3178 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:20,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2024-11-16 09:33:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2016. [2024-11-16 09:33:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2014 states have (on average 1.561072492552135) internal successors, (3144), 2015 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3144 transitions. [2024-11-16 09:33:20,667 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3144 transitions. Word has length 58 [2024-11-16 09:33:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:20,667 INFO L471 AbstractCegarLoop]: Abstraction has 2016 states and 3144 transitions. [2024-11-16 09:33:20,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3144 transitions. [2024-11-16 09:33:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:20,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:20,668 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:33:20,668 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:20,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -805698004, now seen corresponding path program 1 times [2024-11-16 09:33:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388837115] [2024-11-16 09:33:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:33:20,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:20,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388837115] [2024-11-16 09:33:20,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388837115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:20,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:20,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:20,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536878031] [2024-11-16 09:33:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:20,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:20,794 INFO L87 Difference]: Start difference. First operand 2016 states and 3144 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:20,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:20,953 INFO L93 Difference]: Finished difference Result 4020 states and 5872 transitions. [2024-11-16 09:33:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:20,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:20,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:20,963 INFO L225 Difference]: With dead ends: 4020 [2024-11-16 09:33:20,964 INFO L226 Difference]: Without dead ends: 3401 [2024-11-16 09:33:20,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:20,965 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 3073 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:20,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 3167 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2024-11-16 09:33:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 2944. [2024-11-16 09:33:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2942 states have (on average 1.4901427600271924) internal successors, (4384), 2943 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 4384 transitions. [2024-11-16 09:33:21,017 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 4384 transitions. Word has length 58 [2024-11-16 09:33:21,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:21,018 INFO L471 AbstractCegarLoop]: Abstraction has 2944 states and 4384 transitions. [2024-11-16 09:33:21,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 4384 transitions. [2024-11-16 09:33:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:21,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:21,019 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:33:21,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:33:21,019 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:21,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1122141838, now seen corresponding path program 1 times [2024-11-16 09:33:21,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:21,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973002944] [2024-11-16 09:33:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:21,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:21,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:21,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973002944] [2024-11-16 09:33:21,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973002944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:21,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:21,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851874759] [2024-11-16 09:33:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:21,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:21,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:21,086 INFO L87 Difference]: Start difference. First operand 2944 states and 4384 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:21,118 INFO L93 Difference]: Finished difference Result 4536 states and 6563 transitions. [2024-11-16 09:33:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:21,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 09:33:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:21,125 INFO L225 Difference]: With dead ends: 4536 [2024-11-16 09:33:21,125 INFO L226 Difference]: Without dead ends: 2373 [2024-11-16 09:33:21,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:21,128 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 35 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:21,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2024-11-16 09:33:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2370. [2024-11-16 09:33:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2368 states have (on average 1.5261824324324325) internal successors, (3614), 2369 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3614 transitions. [2024-11-16 09:33:21,166 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3614 transitions. Word has length 60 [2024-11-16 09:33:21,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:21,166 INFO L471 AbstractCegarLoop]: Abstraction has 2370 states and 3614 transitions. [2024-11-16 09:33:21,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3614 transitions. [2024-11-16 09:33:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:21,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:21,167 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:21,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:33:21,167 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:21,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:21,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1252169204, now seen corresponding path program 1 times [2024-11-16 09:33:21,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:21,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286010456] [2024-11-16 09:33:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:21,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:21,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:21,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286010456] [2024-11-16 09:33:21,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286010456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:21,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:21,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:21,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611584528] [2024-11-16 09:33:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:21,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:21,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:21,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:21,241 INFO L87 Difference]: Start difference. First operand 2370 states and 3614 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:21,310 INFO L93 Difference]: Finished difference Result 3726 states and 5470 transitions. [2024-11-16 09:33:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:21,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 09:33:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:21,319 INFO L225 Difference]: With dead ends: 3726 [2024-11-16 09:33:21,319 INFO L226 Difference]: Without dead ends: 3275 [2024-11-16 09:33:21,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:21,320 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 3071 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3071 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:21,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3071 Valid, 3194 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2024-11-16 09:33:21,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2818. [2024-11-16 09:33:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2816 states have (on average 1.4992897727272727) internal successors, (4222), 2817 states have internal predecessors, (4222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4222 transitions. [2024-11-16 09:33:21,367 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 4222 transitions. Word has length 60 [2024-11-16 09:33:21,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:21,368 INFO L471 AbstractCegarLoop]: Abstraction has 2818 states and 4222 transitions. [2024-11-16 09:33:21,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 4222 transitions. [2024-11-16 09:33:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 09:33:21,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:21,369 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:33:21,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:33:21,369 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:21,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1545598382, now seen corresponding path program 1 times [2024-11-16 09:33:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:21,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065638070] [2024-11-16 09:33:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:21,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:21,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065638070] [2024-11-16 09:33:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065638070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:21,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:21,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:21,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734013131] [2024-11-16 09:33:21,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:21,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:21,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:21,439 INFO L87 Difference]: Start difference. First operand 2818 states and 4222 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:21,472 INFO L93 Difference]: Finished difference Result 3832 states and 5594 transitions. [2024-11-16 09:33:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:21,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-16 09:33:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:21,477 INFO L225 Difference]: With dead ends: 3832 [2024-11-16 09:33:21,477 INFO L226 Difference]: Without dead ends: 1813 [2024-11-16 09:33:21,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:21,479 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 28 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:21,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2024-11-16 09:33:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1810. [2024-11-16 09:33:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1808 states have (on average 1.5685840707964602) internal successors, (2836), 1809 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2836 transitions. [2024-11-16 09:33:21,517 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2836 transitions. Word has length 62 [2024-11-16 09:33:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:21,517 INFO L471 AbstractCegarLoop]: Abstraction has 1810 states and 2836 transitions. [2024-11-16 09:33:21,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2836 transitions. [2024-11-16 09:33:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 09:33:21,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:21,521 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] [2024-11-16 09:33:21,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:33:21,521 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:21,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash 382657263, now seen corresponding path program 1 times [2024-11-16 09:33:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666939435] [2024-11-16 09:33:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:21,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:21,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666939435] [2024-11-16 09:33:21,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666939435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:21,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:21,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:33:21,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492582597] [2024-11-16 09:33:21,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:21,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:21,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:21,565 INFO L87 Difference]: Start difference. First operand 1810 states and 2836 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:24,401 INFO L93 Difference]: Finished difference Result 3317 states and 5712 transitions. [2024-11-16 09:33:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:24,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 09:33:24,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:24,408 INFO L225 Difference]: With dead ends: 3317 [2024-11-16 09:33:24,409 INFO L226 Difference]: Without dead ends: 2562 [2024-11-16 09:33:24,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:24,410 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 815 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:24,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 554 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 09:33:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2024-11-16 09:33:24,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2562. [2024-11-16 09:33:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2560 states have (on average 1.490625) internal successors, (3816), 2561 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3816 transitions. [2024-11-16 09:33:24,456 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3816 transitions. Word has length 63 [2024-11-16 09:33:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:24,456 INFO L471 AbstractCegarLoop]: Abstraction has 2562 states and 3816 transitions. [2024-11-16 09:33:24,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3816 transitions. [2024-11-16 09:33:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 09:33:24,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:24,457 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:33:24,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:33:24,457 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:24,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 585202352, now seen corresponding path program 1 times [2024-11-16 09:33:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:24,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453849782] [2024-11-16 09:33:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:24,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:24,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453849782] [2024-11-16 09:33:24,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453849782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:24,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:24,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:24,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299909179] [2024-11-16 09:33:24,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:24,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:24,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:24,522 INFO L87 Difference]: Start difference. First operand 2562 states and 3816 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:24,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:24,548 INFO L93 Difference]: Finished difference Result 3072 states and 4495 transitions. [2024-11-16 09:33:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:24,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-16 09:33:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:24,552 INFO L225 Difference]: With dead ends: 3072 [2024-11-16 09:33:24,552 INFO L226 Difference]: Without dead ends: 2061 [2024-11-16 09:33:24,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:24,553 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 23 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:24,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3013 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2024-11-16 09:33:24,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2058. [2024-11-16 09:33:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2056 states have (on average 1.5233463035019454) internal successors, (3132), 2057 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 3132 transitions. [2024-11-16 09:33:24,601 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 3132 transitions. Word has length 64 [2024-11-16 09:33:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:24,601 INFO L471 AbstractCegarLoop]: Abstraction has 2058 states and 3132 transitions. [2024-11-16 09:33:24,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 3132 transitions. [2024-11-16 09:33:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 09:33:24,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:24,602 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:24,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:33:24,603 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:24,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash 65408791, now seen corresponding path program 1 times [2024-11-16 09:33:24,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:24,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12590705] [2024-11-16 09:33:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:24,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:24,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:24,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12590705] [2024-11-16 09:33:24,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12590705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:24,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173533700] [2024-11-16 09:33:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:24,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:24,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:24,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:33:24,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:33:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:25,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 09:33:25,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:25,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:26,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173533700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:26,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:26,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-16 09:33:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758569615] [2024-11-16 09:33:26,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:26,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 09:33:26,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:26,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 09:33:26,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-16 09:33:26,244 INFO L87 Difference]: Start difference. First operand 2058 states and 3132 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:26,719 INFO L93 Difference]: Finished difference Result 3129 states and 4551 transitions. [2024-11-16 09:33:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 09:33:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 09:33:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:26,726 INFO L225 Difference]: With dead ends: 3129 [2024-11-16 09:33:26,726 INFO L226 Difference]: Without dead ends: 2622 [2024-11-16 09:33:26,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2024-11-16 09:33:26,728 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 18086 mSDsluCounter, 4647 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18086 SdHoareTripleChecker+Valid, 6144 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:26,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18086 Valid, 6144 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:33:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2024-11-16 09:33:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2598. [2024-11-16 09:33:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2596 states have (on average 1.4734206471494606) internal successors, (3825), 2597 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3825 transitions. [2024-11-16 09:33:26,779 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3825 transitions. Word has length 66 [2024-11-16 09:33:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:26,779 INFO L471 AbstractCegarLoop]: Abstraction has 2598 states and 3825 transitions. [2024-11-16 09:33:26,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3825 transitions. [2024-11-16 09:33:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 09:33:26,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:26,780 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:26,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:33:26,980 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,SelfDestructingSolverStorable16 [2024-11-16 09:33:26,981 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:26,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:26,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2079770871, now seen corresponding path program 1 times [2024-11-16 09:33:26,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:26,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126098467] [2024-11-16 09:33:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:27,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:27,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126098467] [2024-11-16 09:33:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126098467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:27,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211958223] [2024-11-16 09:33:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:27,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:27,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:27,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:33:27,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:33:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:27,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 09:33:27,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:31,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:32,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211958223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:32,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:32,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 20] total 44 [2024-11-16 09:33:32,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674010059] [2024-11-16 09:33:32,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:32,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 09:33:32,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 09:33:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 09:33:32,915 INFO L87 Difference]: Start difference. First operand 2598 states and 3825 transitions. Second operand has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:40,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:40,658 INFO L93 Difference]: Finished difference Result 9249 states and 12445 transitions. [2024-11-16 09:33:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-16 09:33:40,658 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 09:33:40,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:40,672 INFO L225 Difference]: With dead ends: 9249 [2024-11-16 09:33:40,673 INFO L226 Difference]: Without dead ends: 8202 [2024-11-16 09:33:40,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4699 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3071, Invalid=11691, Unknown=0, NotChecked=0, Total=14762 [2024-11-16 09:33:40,683 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 20025 mSDsluCounter, 19305 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20025 SdHoareTripleChecker+Valid, 20823 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:40,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20025 Valid, 20823 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 09:33:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8202 states. [2024-11-16 09:33:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8202 to 4938. [2024-11-16 09:33:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4936 states have (on average 1.3839141004862237) internal successors, (6831), 4937 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 6831 transitions. [2024-11-16 09:33:40,876 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 6831 transitions. Word has length 66 [2024-11-16 09:33:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:40,877 INFO L471 AbstractCegarLoop]: Abstraction has 4938 states and 6831 transitions. [2024-11-16 09:33:40,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:40,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 6831 transitions. [2024-11-16 09:33:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 09:33:40,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:40,878 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:40,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 09:33:41,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 09:33:41,083 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:41,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:41,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1699220583, now seen corresponding path program 1 times [2024-11-16 09:33:41,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:41,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233212438] [2024-11-16 09:33:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:41,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233212438] [2024-11-16 09:33:42,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233212438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676798908] [2024-11-16 09:33:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:42,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:42,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:33:42,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:33:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:42,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:33:42,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:43,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:45,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676798908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:45,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:45,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 21] total 57 [2024-11-16 09:33:45,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134006417] [2024-11-16 09:33:45,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:45,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-16 09:33:45,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:45,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-16 09:33:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2885, Unknown=0, NotChecked=0, Total=3192 [2024-11-16 09:33:45,389 INFO L87 Difference]: Start difference. First operand 4938 states and 6831 transitions. Second operand has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:57,360 INFO L93 Difference]: Finished difference Result 11985 states and 15846 transitions. [2024-11-16 09:33:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-16 09:33:57,361 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 09:33:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:57,371 INFO L225 Difference]: With dead ends: 11985 [2024-11-16 09:33:57,371 INFO L226 Difference]: Without dead ends: 10182 [2024-11-16 09:33:57,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6579 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=4780, Invalid=19400, Unknown=0, NotChecked=0, Total=24180 [2024-11-16 09:33:57,376 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 32233 mSDsluCounter, 27571 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32233 SdHoareTripleChecker+Valid, 29126 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:57,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32233 Valid, 29126 Invalid, 2843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 09:33:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2024-11-16 09:33:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 4722. [2024-11-16 09:33:57,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 4720 states have (on average 1.3860169491525425) internal successors, (6542), 4721 states have internal predecessors, (6542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 6542 transitions. [2024-11-16 09:33:57,478 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 6542 transitions. Word has length 67 [2024-11-16 09:33:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:57,478 INFO L471 AbstractCegarLoop]: Abstraction has 4722 states and 6542 transitions. [2024-11-16 09:33:57,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 6542 transitions. [2024-11-16 09:33:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 09:33:57,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:57,480 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:57,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 09:33:57,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:57,685 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:57,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2033078427, now seen corresponding path program 1 times [2024-11-16 09:33:57,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:57,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884230203] [2024-11-16 09:33:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:58,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:58,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884230203] [2024-11-16 09:33:58,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884230203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:58,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675500416] [2024-11-16 09:33:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:58,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:58,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:58,116 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) [2024-11-16 09:33:58,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:33:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:58,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 09:33:58,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:58,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:58,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675500416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:58,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:58,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-16 09:33:58,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824613834] [2024-11-16 09:33:58,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:58,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 09:33:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 09:33:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:33:58,439 INFO L87 Difference]: Start difference. First operand 4722 states and 6542 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:59,578 INFO L93 Difference]: Finished difference Result 12004 states and 15716 transitions. [2024-11-16 09:33:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 09:33:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 09:33:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:59,588 INFO L225 Difference]: With dead ends: 12004 [2024-11-16 09:33:59,588 INFO L226 Difference]: Without dead ends: 8833 [2024-11-16 09:33:59,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=371, Invalid=1269, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 09:33:59,591 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 11172 mSDsluCounter, 6310 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11172 SdHoareTripleChecker+Valid, 7829 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:59,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11172 Valid, 7829 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 09:33:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2024-11-16 09:34:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8740. [2024-11-16 09:34:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8740 states, 8738 states have (on average 1.2817578393224995) internal successors, (11200), 8739 states have internal predecessors, (11200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8740 states to 8740 states and 11200 transitions. [2024-11-16 09:34:00,056 INFO L78 Accepts]: Start accepts. Automaton has 8740 states and 11200 transitions. Word has length 68 [2024-11-16 09:34:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:00,059 INFO L471 AbstractCegarLoop]: Abstraction has 8740 states and 11200 transitions. [2024-11-16 09:34:00,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8740 states and 11200 transitions. [2024-11-16 09:34:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:34:00,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:00,060 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:34:00,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 09:34:00,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:00,260 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:00,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash -731290903, now seen corresponding path program 1 times [2024-11-16 09:34:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:00,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987399397] [2024-11-16 09:34:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:00,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987399397] [2024-11-16 09:34:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987399397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308276525] [2024-11-16 09:34:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:01,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:01,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:01,334 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) [2024-11-16 09:34:01,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 09:34:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:01,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 09:34:01,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:02,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308276525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:05,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:05,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 18] total 52 [2024-11-16 09:34:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530723100] [2024-11-16 09:34:05,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:05,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-16 09:34:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-16 09:34:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2418, Unknown=0, NotChecked=0, Total=2652 [2024-11-16 09:34:05,096 INFO L87 Difference]: Start difference. First operand 8740 states and 11200 transitions. Second operand has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:12,283 INFO L93 Difference]: Finished difference Result 14649 states and 18399 transitions. [2024-11-16 09:34:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-16 09:34:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:34:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:12,294 INFO L225 Difference]: With dead ends: 14649 [2024-11-16 09:34:12,295 INFO L226 Difference]: Without dead ends: 10544 [2024-11-16 09:34:12,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2590 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1848, Invalid=9072, Unknown=0, NotChecked=0, Total=10920 [2024-11-16 09:34:12,301 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 23290 mSDsluCounter, 31264 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23290 SdHoareTripleChecker+Valid, 32769 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:12,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23290 Valid, 32769 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:34:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10544 states. [2024-11-16 09:34:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10544 to 7322. [2024-11-16 09:34:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7322 states, 7320 states have (on average 1.3009562841530056) internal successors, (9523), 7321 states have internal predecessors, (9523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 9523 transitions. [2024-11-16 09:34:12,598 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 9523 transitions. Word has length 69 [2024-11-16 09:34:12,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:12,598 INFO L471 AbstractCegarLoop]: Abstraction has 7322 states and 9523 transitions. [2024-11-16 09:34:12,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:12,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 9523 transitions. [2024-11-16 09:34:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-16 09:34:12,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:12,600 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 09:34:12,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 09:34:12,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:12,805 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:12,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash 621848533, now seen corresponding path program 1 times [2024-11-16 09:34:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:12,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685325943] [2024-11-16 09:34:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:13,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:13,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685325943] [2024-11-16 09:34:13,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685325943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:13,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403434994] [2024-11-16 09:34:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:13,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:13,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:13,442 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) [2024-11-16 09:34:13,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 09:34:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:13,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:34:13,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:14,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:17,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403434994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:17,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:17,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 17] total 47 [2024-11-16 09:34:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182218284] [2024-11-16 09:34:17,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:17,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 09:34:17,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:17,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 09:34:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1971, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 09:34:17,299 INFO L87 Difference]: Start difference. First operand 7322 states and 9523 transitions. Second operand has 47 states, 47 states have (on average 6.48936170212766) internal successors, (305), 47 states have internal predecessors, (305), 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)