./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i -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 b073cc2eb0b196ef0c05471292790dfe61756b839736ddb49ad92ee60513afd2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:00:23,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:00:23,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:00:23,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:00:23,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:00:23,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:00:23,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:00:23,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:00:23,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:00:23,715 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:00:23,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:00:23,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:00:23,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:00:23,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:00:23,741 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:00:23,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:00:23,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:00:23,742 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:00:23,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:00:23,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:00:23,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:00:23,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:00:23,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:00:23,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:00:23,747 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:00:23,747 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:00:23,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:00:23,747 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:00:23,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:00:23,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:00:23,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:00:23,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:00:23,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:00:23,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:00:23,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:00:23,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:00:23,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:00:23,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:00:23,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:00:23,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:00:23,752 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:00:23,752 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:00:23,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b073cc2eb0b196ef0c05471292790dfe61756b839736ddb49ad92ee60513afd2 [2024-11-18 09:00:24,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:00:24,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:00:24,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:00:24,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:00:24,050 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:00:24,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i [2024-11-18 09:00:25,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:00:26,166 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:00:26,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-2.i [2024-11-18 09:00:26,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36cf1dc69/255da3c409a5495998aad6adcba6474e/FLAG0416bcf44 [2024-11-18 09:00:26,519 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36cf1dc69/255da3c409a5495998aad6adcba6474e [2024-11-18 09:00:26,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:00:26,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:00:26,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:00:26,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:00:26,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:00:26,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5578bda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26, skipping insertion in model container [2024-11-18 09:00:26,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:00:26,680 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/array-industry-pattern/array_ptr_single_elem_init-2.i[821,834] [2024-11-18 09:00:26,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:00:26,703 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:00:26,714 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/array-industry-pattern/array_ptr_single_elem_init-2.i[821,834] [2024-11-18 09:00:26,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:00:26,735 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:00:26,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26 WrapperNode [2024-11-18 09:00:26,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:00:26,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:00:26,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:00:26,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:00:26,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,771 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-18 09:00:26,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:00:26,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:00:26,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:00:26,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:00:26,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,793 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 3, 1]. [2024-11-18 09:00:26,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:00:26,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:00:26,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:00:26,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:00:26,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (1/1) ... [2024-11-18 09:00:26,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:00:26,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:00:26,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:00:26,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:00:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:00:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:00:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:00:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:00:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:00:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:00:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:00:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:00:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:00:26,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:00:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:00:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:00:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:00:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:00:26,945 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:00:26,947 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:00:27,079 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-18 09:00:27,079 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:00:27,088 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:00:27,089 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 09:00:27,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:00:27 BoogieIcfgContainer [2024-11-18 09:00:27,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:00:27,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:00:27,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:00:27,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:00:27,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:00:26" (1/3) ... [2024-11-18 09:00:27,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b939233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:00:27, skipping insertion in model container [2024-11-18 09:00:27,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:26" (2/3) ... [2024-11-18 09:00:27,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b939233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:00:27, skipping insertion in model container [2024-11-18 09:00:27,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:00:27" (3/3) ... [2024-11-18 09:00:27,110 INFO L112 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init-2.i [2024-11-18 09:00:27,124 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:00:27,125 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:00:27,183 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:00:27,190 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;@49762914, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:00:27,194 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:00:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) [2024-11-18 09:00:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 09:00:27,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:27,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:27,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:27,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash 975548362, now seen corresponding path program 1 times [2024-11-18 09:00:27,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:27,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568609759] [2024-11-18 09:00:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:00:27,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:00:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:00:27,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:27,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568609759] [2024-11-18 09:00:27,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568609759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:00:27,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:00:27,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:00:27,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394814185] [2024-11-18 09:00:27,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:00:27,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:00:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:00:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:00:27,393 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-18 09:00:27,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:27,405 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-11-18 09:00:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:00:27,407 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-11-18 09:00:27,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:27,413 INFO L225 Difference]: With dead ends: 33 [2024-11-18 09:00:27,413 INFO L226 Difference]: Without dead ends: 17 [2024-11-18 09:00:27,416 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 [2024-11-18 09:00:27,420 INFO L432 NwaCegarLoop]: 26 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, 26 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 [2024-11-18 09:00:27,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:00:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-18 09:00:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-18 09:00:27,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 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) [2024-11-18 09:00:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-18 09:00:27,448 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2024-11-18 09:00:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:27,448 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-18 09:00:27,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-18 09:00:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-18 09:00:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 09:00:27,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:27,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:27,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:00:27,450 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:27,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash 231190436, now seen corresponding path program 1 times [2024-11-18 09:00:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:27,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872838752] [2024-11-18 09:00:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:00:27,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:00:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:00:27,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:27,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872838752] [2024-11-18 09:00:27,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872838752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:00:27,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:00:27,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:00:27,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732160292] [2024-11-18 09:00:27,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:00:27,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:00:27,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:27,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:00:27,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:00:27,558 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-18 09:00:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:27,602 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-18 09:00:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:00:27,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-18 09:00:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:27,604 INFO L225 Difference]: With dead ends: 35 [2024-11-18 09:00:27,605 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 09:00:27,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:00:27,606 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:27,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:00:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 09:00:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2024-11-18 09:00:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2024-11-18 09:00:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-18 09:00:27,617 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 8 [2024-11-18 09:00:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:27,618 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-18 09:00:27,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-18 09:00:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-18 09:00:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 09:00:27,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:27,622 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:27,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:00:27,623 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:27,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:27,624 INFO L85 PathProgramCache]: Analyzing trace with hash -366620444, now seen corresponding path program 1 times [2024-11-18 09:00:27,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:27,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380400777] [2024-11-18 09:00:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:00:27,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:00:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:00:27,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:27,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380400777] [2024-11-18 09:00:27,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380400777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:00:27,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:00:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:00:27,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590802327] [2024-11-18 09:00:27,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:00:27,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:00:27,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:27,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:00:27,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:00:27,929 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-18 09:00:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:27,991 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-11-18 09:00:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:00:27,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 17 [2024-11-18 09:00:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:27,992 INFO L225 Difference]: With dead ends: 42 [2024-11-18 09:00:27,993 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 09:00:27,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:00:27,994 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:27,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 44 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:00:27,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 09:00:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-18 09:00:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-11-18 09:00:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-18 09:00:28,001 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2024-11-18 09:00:28,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:28,002 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-18 09:00:28,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-18 09:00:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-18 09:00:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 09:00:28,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:28,002 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:28,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:00:28,003 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:28,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1377737694, now seen corresponding path program 1 times [2024-11-18 09:00:28,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:28,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207600738] [2024-11-18 09:00:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:00:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:00:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:00:28,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:28,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207600738] [2024-11-18 09:00:28,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207600738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:00:28,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226878500] [2024-11-18 09:00:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:00:28,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:28,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:00:28,051 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) [2024-11-18 09:00:28,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:00:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:00:28,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:00:28,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:00:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:00:28,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:00:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:00:28,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226878500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:00:28,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:00:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:00:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767338114] [2024-11-18 09:00:28,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:00:28,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:00:28,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:00:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:00:28,175 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2024-11-18 09:00:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:28,237 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2024-11-18 09:00:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:00:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 17 [2024-11-18 09:00:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:28,239 INFO L225 Difference]: With dead ends: 67 [2024-11-18 09:00:28,239 INFO L226 Difference]: Without dead ends: 57 [2024-11-18 09:00:28,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:00:28,240 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:28,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 31 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:00:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-18 09:00:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2024-11-18 09:00:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 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) [2024-11-18 09:00:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2024-11-18 09:00:28,245 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 17 [2024-11-18 09:00:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:28,246 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2024-11-18 09:00:28,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2024-11-18 09:00:28,246 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2024-11-18 09:00:28,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 09:00:28,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:28,247 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:28,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:00:28,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:28,448 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:28,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash -912381076, now seen corresponding path program 2 times [2024-11-18 09:00:28,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:28,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532544273] [2024-11-18 09:00:28,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:00:28,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:28,487 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:00:28,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 09:00:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532544273] [2024-11-18 09:00:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532544273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:00:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967884441] [2024-11-18 09:00:28,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:00:28,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:28,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:00:28,630 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) [2024-11-18 09:00:28,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:00:28,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:00:28,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:28,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:00:28,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:00:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 09:00:28,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:00:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 09:00:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967884441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:00:28,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:00:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 09:00:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482224659] [2024-11-18 09:00:28,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:00:28,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:00:28,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:00:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:00:28,850 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2024-11-18 09:00:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:29,016 INFO L93 Difference]: Finished difference Result 142 states and 188 transitions. [2024-11-18 09:00:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:00:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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 38 [2024-11-18 09:00:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:29,019 INFO L225 Difference]: With dead ends: 142 [2024-11-18 09:00:29,021 INFO L226 Difference]: Without dead ends: 129 [2024-11-18 09:00:29,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:00:29,022 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 155 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:29,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 56 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:00:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-18 09:00:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2024-11-18 09:00:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 114 states have internal predecessors, (147), 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) [2024-11-18 09:00:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2024-11-18 09:00:29,041 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 38 [2024-11-18 09:00:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:29,041 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2024-11-18 09:00:29,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2024-11-18 09:00:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2024-11-18 09:00:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 09:00:29,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:29,047 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:29,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 09:00:29,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:29,248 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:29,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:29,249 INFO L85 PathProgramCache]: Analyzing trace with hash 677681824, now seen corresponding path program 3 times [2024-11-18 09:00:29,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:29,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351987410] [2024-11-18 09:00:29,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:00:29,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:29,297 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 09:00:29,297 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-18 09:00:29,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351987410] [2024-11-18 09:00:29,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351987410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:00:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876673671] [2024-11-18 09:00:29,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:00:29,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:29,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:00:29,503 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) [2024-11-18 09:00:29,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:00:29,596 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 09:00:29,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:29,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 09:00:29,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:00:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-18 09:00:29,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:00:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-18 09:00:29,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876673671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:00:29,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:00:29,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-18 09:00:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630059901] [2024-11-18 09:00:29,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:00:29,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 09:00:29,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:29,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 09:00:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:00:29,805 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 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) [2024-11-18 09:00:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:30,008 INFO L93 Difference]: Finished difference Result 185 states and 236 transitions. [2024-11-18 09:00:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:00:30,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 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 83 [2024-11-18 09:00:30,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:30,010 INFO L225 Difference]: With dead ends: 185 [2024-11-18 09:00:30,010 INFO L226 Difference]: Without dead ends: 163 [2024-11-18 09:00:30,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:00:30,011 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 254 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:30,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 63 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:00:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-18 09:00:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 154. [2024-11-18 09:00:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.2549019607843137) internal successors, (192), 153 states have internal predecessors, (192), 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) [2024-11-18 09:00:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 192 transitions. [2024-11-18 09:00:30,023 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 192 transitions. Word has length 83 [2024-11-18 09:00:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:30,023 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 192 transitions. [2024-11-18 09:00:30,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 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) [2024-11-18 09:00:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 192 transitions. [2024-11-18 09:00:30,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 09:00:30,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:30,026 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:30,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:00:30,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:30,231 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:30,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1360142596, now seen corresponding path program 4 times [2024-11-18 09:00:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:30,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623282256] [2024-11-18 09:00:30,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:00:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:30,259 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:00:30,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-18 09:00:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623282256] [2024-11-18 09:00:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623282256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:00:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898634763] [2024-11-18 09:00:30,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:00:30,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:30,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:00:30,524 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) [2024-11-18 09:00:30,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:00:30,612 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:00:30,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:30,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 09:00:30,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:00:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-18 09:00:30,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:00:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-18 09:00:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898634763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:00:31,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:00:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-11-18 09:00:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333641681] [2024-11-18 09:00:31,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:00:31,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 09:00:31,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:31,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 09:00:31,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2024-11-18 09:00:31,045 INFO L87 Difference]: Start difference. First operand 154 states and 192 transitions. Second operand has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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) [2024-11-18 09:00:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:31,394 INFO L93 Difference]: Finished difference Result 364 states and 472 transitions. [2024-11-18 09:00:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 09:00:31,394 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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 116 [2024-11-18 09:00:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:31,396 INFO L225 Difference]: With dead ends: 364 [2024-11-18 09:00:31,396 INFO L226 Difference]: Without dead ends: 321 [2024-11-18 09:00:31,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2024-11-18 09:00:31,397 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 561 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:31,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 96 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:00:31,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-18 09:00:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 283. [2024-11-18 09:00:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.2872340425531914) internal successors, (363), 282 states have internal predecessors, (363), 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) [2024-11-18 09:00:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 363 transitions. [2024-11-18 09:00:31,410 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 363 transitions. Word has length 116 [2024-11-18 09:00:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:31,410 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 363 transitions. [2024-11-18 09:00:31,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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) [2024-11-18 09:00:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 363 transitions. [2024-11-18 09:00:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-18 09:00:31,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:31,413 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:31,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 09:00:31,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:31,618 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:31,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:31,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1305226112, now seen corresponding path program 5 times [2024-11-18 09:00:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:31,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333460054] [2024-11-18 09:00:31,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:00:31,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:31,688 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-18 09:00:31,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2024-11-18 09:00:32,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333460054] [2024-11-18 09:00:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333460054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:00:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878874185] [2024-11-18 09:00:32,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:00:32,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:32,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:00:32,095 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) [2024-11-18 09:00:32,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:00:33,372 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-18 09:00:33,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:33,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 09:00:33,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:00:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2024-11-18 09:00:33,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:00:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2024-11-18 09:00:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878874185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:00:33,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:00:33,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2024-11-18 09:00:33,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897752872] [2024-11-18 09:00:33,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:00:33,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 09:00:33,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 09:00:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2024-11-18 09:00:33,945 INFO L87 Difference]: Start difference. First operand 283 states and 363 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 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) [2024-11-18 09:00:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:34,328 INFO L93 Difference]: Finished difference Result 401 states and 508 transitions. [2024-11-18 09:00:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 09:00:34,329 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 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 203 [2024-11-18 09:00:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:34,330 INFO L225 Difference]: With dead ends: 401 [2024-11-18 09:00:34,331 INFO L226 Difference]: Without dead ends: 355 [2024-11-18 09:00:34,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2024-11-18 09:00:34,334 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 848 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:34,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 116 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:00:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-18 09:00:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 346. [2024-11-18 09:00:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.2521739130434784) internal successors, (432), 345 states have internal predecessors, (432), 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) [2024-11-18 09:00:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 432 transitions. [2024-11-18 09:00:34,361 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 432 transitions. Word has length 203 [2024-11-18 09:00:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:34,361 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 432 transitions. [2024-11-18 09:00:34,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 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) [2024-11-18 09:00:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 432 transitions. [2024-11-18 09:00:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-18 09:00:34,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:34,364 INFO L215 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:34,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:00:34,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:34,570 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:34,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash 746749468, now seen corresponding path program 6 times [2024-11-18 09:00:34,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:34,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747376849] [2024-11-18 09:00:34,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:00:34,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:34,799 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2024-11-18 09:00:34,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2024-11-18 09:00:35,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:35,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747376849] [2024-11-18 09:00:35,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747376849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:00:35,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397273553] [2024-11-18 09:00:35,741 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:00:35,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:35,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:00:35,745 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) [2024-11-18 09:00:35,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:00:40,960 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2024-11-18 09:00:40,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:00:40,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 09:00:40,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:00:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2024-11-18 09:00:41,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:00:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2024-11-18 09:00:42,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397273553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:00:42,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:00:42,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-18 09:00:42,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369141307] [2024-11-18 09:00:42,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:00:42,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-18 09:00:42,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-18 09:00:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-18 09:00:42,137 INFO L87 Difference]: Start difference. First operand 346 states and 432 transitions. Second operand has 61 states, 61 states have (on average 3.098360655737705) internal successors, (189), 61 states have internal predecessors, (189), 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) [2024-11-18 09:00:43,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:43,294 INFO L93 Difference]: Finished difference Result 806 states and 1046 transitions. [2024-11-18 09:00:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-18 09:00:43,295 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.098360655737705) internal successors, (189), 61 states have internal predecessors, (189), 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 260 [2024-11-18 09:00:43,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:43,297 INFO L225 Difference]: With dead ends: 806 [2024-11-18 09:00:43,298 INFO L226 Difference]: Without dead ends: 715 [2024-11-18 09:00:43,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-18 09:00:43,300 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1766 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:43,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 209 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:00:43,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-18 09:00:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 706. [2024-11-18 09:00:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 1.251063829787234) internal successors, (882), 705 states have internal predecessors, (882), 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) [2024-11-18 09:00:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 882 transitions. [2024-11-18 09:00:43,314 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 882 transitions. Word has length 260 [2024-11-18 09:00:43,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:43,314 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 882 transitions. [2024-11-18 09:00:43,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.098360655737705) internal successors, (189), 61 states have internal predecessors, (189), 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) [2024-11-18 09:00:43,315 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 882 transitions. [2024-11-18 09:00:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-11-18 09:00:43,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:43,327 INFO L215 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:43,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 09:00:43,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:43,531 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:43,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1845132680, now seen corresponding path program 7 times [2024-11-18 09:00:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570998356] [2024-11-18 09:00:43,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:00:43,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:00:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 9976 refuted. 0 times theorem prover too weak. 5075 trivial. 0 not checked. [2024-11-18 09:00:47,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:00:47,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570998356] [2024-11-18 09:00:47,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570998356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:00:47,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395083230] [2024-11-18 09:00:47,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:00:47,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:47,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:00:47,841 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:00:47,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:00:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:00:48,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-18 09:00:48,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:00:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 9976 refuted. 0 times theorem prover too weak. 5075 trivial. 0 not checked. [2024-11-18 09:00:48,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:00:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 9976 refuted. 0 times theorem prover too weak. 5075 trivial. 0 not checked. [2024-11-18 09:00:52,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395083230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:00:52,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:00:52,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 121 [2024-11-18 09:00:52,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824584035] [2024-11-18 09:00:52,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:00:52,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-18 09:00:52,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:00:52,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-18 09:00:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2024-11-18 09:00:52,227 INFO L87 Difference]: Start difference. First operand 706 states and 882 transitions. Second operand has 121 states, 121 states have (on average 5.909090909090909) internal successors, (715), 121 states have internal predecessors, (715), 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) [2024-11-18 09:00:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:00:57,631 INFO L93 Difference]: Finished difference Result 1606 states and 2082 transitions. [2024-11-18 09:00:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-18 09:00:57,632 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 5.909090909090909) internal successors, (715), 121 states have internal predecessors, (715), 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 530 [2024-11-18 09:00:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:00:57,637 INFO L225 Difference]: With dead ends: 1606 [2024-11-18 09:00:57,637 INFO L226 Difference]: Without dead ends: 1425 [2024-11-18 09:00:57,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1000 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2024-11-18 09:00:57,641 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3196 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3196 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:00:57,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3196 Valid, 394 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 09:00:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2024-11-18 09:00:57,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1249. [2024-11-18 09:00:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.2860576923076923) internal successors, (1605), 1248 states have internal predecessors, (1605), 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) [2024-11-18 09:00:57,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1605 transitions. [2024-11-18 09:00:57,663 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1605 transitions. Word has length 530 [2024-11-18 09:00:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:00:57,663 INFO L471 AbstractCegarLoop]: Abstraction has 1249 states and 1605 transitions. [2024-11-18 09:00:57,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 5.909090909090909) internal successors, (715), 121 states have internal predecessors, (715), 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) [2024-11-18 09:00:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1605 transitions. [2024-11-18 09:00:57,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2024-11-18 09:00:57,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:00:57,669 INFO L215 NwaCegarLoop]: trace histogram [118, 118, 118, 118, 118, 118, 60, 59, 59, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:00:57,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:00:57,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:00:57,872 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:00:57,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:00:57,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1930443128, now seen corresponding path program 8 times [2024-11-18 09:00:57,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:00:57,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735274736] [2024-11-18 09:00:57,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:00:57,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:00:58,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:00:58,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:01:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 46787 backedges. 0 proven. 41536 refuted. 0 times theorem prover too weak. 5251 trivial. 0 not checked. [2024-11-18 09:01:09,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:01:09,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735274736] [2024-11-18 09:01:09,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735274736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:01:09,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083472290] [2024-11-18 09:01:09,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:01:09,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:01:09,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:01:09,017 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:01:09,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:01:09,461 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:01:09,461 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:01:09,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 2066 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-18 09:01:09,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:01:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 46787 backedges. 0 proven. 41536 refuted. 0 times theorem prover too weak. 5251 trivial. 0 not checked. [2024-11-18 09:01:10,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:01:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 46787 backedges. 0 proven. 41536 refuted. 0 times theorem prover too weak. 5251 trivial. 0 not checked. [2024-11-18 09:01:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083472290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:01:24,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:01:24,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121, 121] total 241 [2024-11-18 09:01:24,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356170442] [2024-11-18 09:01:24,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:01:24,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 241 states [2024-11-18 09:01:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:01:24,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2024-11-18 09:01:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2024-11-18 09:01:24,348 INFO L87 Difference]: Start difference. First operand 1249 states and 1605 transitions. Second operand has 241 states, 241 states have (on average 5.954356846473029) internal successors, (1435), 241 states have internal predecessors, (1435), 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)