./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/avg05-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/reducercommutativity/avg05-1.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 02f02b7f59fc1c3b5c77751f648b2e92e85109b700d3d48af7999437b36b94ea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:00:55,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:00:55,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:00:55,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:00:55,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:00:55,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:00:55,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:00:55,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:00:55,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:00:55,909 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:00:55,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:00:55,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:00:55,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:00:55,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:00:55,912 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:00:55,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:00:55,913 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:00:55,913 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:00:55,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:00:55,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:00:55,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:00:55,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:00:55,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:00:55,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:00:55,917 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:00:55,917 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:00:55,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:00:55,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:00:55,917 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:00:55,917 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:00:55,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:00:55,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:00:55,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:00:55,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:00:55,918 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:00:55,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:00:55,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:00:55,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:00:55,919 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:00:55,919 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:00:55,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:00:55,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:00:55,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f02b7f59fc1c3b5c77751f648b2e92e85109b700d3d48af7999437b36b94ea [2024-11-09 18:00:56,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:00:56,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:00:56,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:00:56,157 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:00:56,157 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:00:56,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/avg05-1.i [2024-11-09 18:00:57,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:00:57,702 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:00:57,702 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg05-1.i [2024-11-09 18:00:57,710 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc35b9a7/6786fa5d44a241e68dd97ddc1d595fc6/FLAG2ec3d8099 [2024-11-09 18:00:58,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc35b9a7/6786fa5d44a241e68dd97ddc1d595fc6 [2024-11-09 18:00:58,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:00:58,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:00:58,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:00:58,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:00:58,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:00:58,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf1848e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58, skipping insertion in model container [2024-11-09 18:00:58,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:00:58,311 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/reducercommutativity/avg05-1.i[1275,1288] [2024-11-09 18:00:58,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:00:58,326 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:00:58,351 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/reducercommutativity/avg05-1.i[1275,1288] [2024-11-09 18:00:58,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:00:58,386 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:00:58,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58 WrapperNode [2024-11-09 18:00:58,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:00:58,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:00:58,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:00:58,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:00:58,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,419 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-09 18:00:58,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:00:58,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:00:58,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:00:58,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:00:58,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,471 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-09 18:00:58,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,476 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:00:58,480 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:00:58,480 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:00:58,480 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:00:58,481 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (1/1) ... [2024-11-09 18:00:58,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:00:58,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:58,524 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) [2024-11-09 18:00:58,531 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 [2024-11-09 18:00:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:00:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:00:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:00:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:00:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:00:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:00:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2024-11-09 18:00:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2024-11-09 18:00:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:00:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:00:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:00:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:00:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:00:58,677 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:00:58,679 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:00:58,789 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2024-11-09 18:00:58,799 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-09 18:00:58,800 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:00:58,812 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:00:58,813 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:00:58,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:00:58 BoogieIcfgContainer [2024-11-09 18:00:58,813 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:00:58,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:00:58,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:00:58,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:00:58,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:00:58" (1/3) ... [2024-11-09 18:00:58,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a07b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:58, skipping insertion in model container [2024-11-09 18:00:58,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:58" (2/3) ... [2024-11-09 18:00:58,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a07b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:58, skipping insertion in model container [2024-11-09 18:00:58,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:00:58" (3/3) ... [2024-11-09 18:00:58,822 INFO L112 eAbstractionObserver]: Analyzing ICFG avg05-1.i [2024-11-09 18:00:58,837 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:00:58,837 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:00:58,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:00:58,915 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;@644f1dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:00:58,915 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:00:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:00:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:00:58,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:58,928 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:58,928 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:58,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:58,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1132361884, now seen corresponding path program 1 times [2024-11-09 18:00:58,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:58,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239548104] [2024-11-09 18:00:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-09 18:00:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 18:00:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 18:00:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 18:00:59,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:59,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239548104] [2024-11-09 18:00:59,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239548104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:00:59,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:00:59,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:00:59,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053228361] [2024-11-09 18:00:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:00:59,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:00:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:59,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:00:59,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:00:59,217 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:00:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:59,230 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2024-11-09 18:00:59,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:00:59,232 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-09 18:00:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:59,237 INFO L225 Difference]: With dead ends: 50 [2024-11-09 18:00:59,237 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 18:00:59,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:00:59,243 INFO L432 NwaCegarLoop]: 31 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, 31 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 [2024-11-09 18:00:59,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:00:59,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 18:00:59,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 18:00:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:00:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-09 18:00:59,281 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2024-11-09 18:00:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:59,281 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-09 18:00:59,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:00:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-09 18:00:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 18:00:59,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:59,285 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:59,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:00:59,285 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:59,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash 731602688, now seen corresponding path program 1 times [2024-11-09 18:00:59,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:59,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019090012] [2024-11-09 18:00:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:59,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 18:00:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 18:00:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 18:00:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:00:59,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019090012] [2024-11-09 18:00:59,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019090012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:00:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275769029] [2024-11-09 18:00:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:59,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:59,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:59,517 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) [2024-11-09 18:00:59,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:00:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:00:59,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:00:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:00:59,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:00:59,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275769029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:00:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:00:59,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 18:00:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144762003] [2024-11-09 18:00:59,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:00:59,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:00:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:00:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:00:59,673 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:00:59,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:59,684 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-11-09 18:00:59,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:00:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2024-11-09 18:00:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:59,687 INFO L225 Difference]: With dead ends: 44 [2024-11-09 18:00:59,687 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 18:00:59,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:00:59,688 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:59,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:00:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 18:00:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 18:00:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:00:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-09 18:00:59,695 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 34 [2024-11-09 18:00:59,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:59,696 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-09 18:00:59,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:00:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-09 18:00:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 18:00:59,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:59,697 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:59,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:00:59,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:59,903 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:59,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:59,904 INFO L85 PathProgramCache]: Analyzing trace with hash -969275553, now seen corresponding path program 1 times [2024-11-09 18:00:59,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:59,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223681709] [2024-11-09 18:00:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:59,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:01:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:01:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:01:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:01:00,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:00,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223681709] [2024-11-09 18:01:00,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223681709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:00,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816944659] [2024-11-09 18:01:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:00,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:00,060 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) [2024-11-09 18:01:00,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:01:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:01:00,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 18:01:00,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:01:00,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816944659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:00,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:01:00,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-11-09 18:01:00,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576442415] [2024-11-09 18:01:00,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:00,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:01:00,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:01:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:01:00,166 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:00,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:00,178 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2024-11-09 18:01:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:01:00,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-09 18:01:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:00,180 INFO L225 Difference]: With dead ends: 44 [2024-11-09 18:01:00,180 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 18:01:00,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:01:00,182 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:00,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 18:01:00,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 18:01:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-09 18:01:00,189 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 36 [2024-11-09 18:01:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:00,190 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-09 18:01:00,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-09 18:01:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 18:01:00,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:00,192 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:00,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:01:00,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 18:01:00,397 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:00,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1262243008, now seen corresponding path program 1 times [2024-11-09 18:01:00,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:00,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628732520] [2024-11-09 18:01:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:01:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:01:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-09 18:01:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:01:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:00,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628732520] [2024-11-09 18:01:00,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628732520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:00,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093291545] [2024-11-09 18:01:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:00,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:00,525 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) [2024-11-09 18:01:00,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:01:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:01:00,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:01:00,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:01:00,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093291545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:01:00,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:01:00,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 18:01:00,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690379478] [2024-11-09 18:01:00,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:01:00,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:01:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:00,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:01:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:01:00,626 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:00,640 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-09 18:01:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:01:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-09 18:01:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:00,643 INFO L225 Difference]: With dead ends: 43 [2024-11-09 18:01:00,643 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 18:01:00,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:01:00,644 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:00,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 18:01:00,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-09 18:01:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-09 18:01:00,651 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 42 [2024-11-09 18:01:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:00,652 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-09 18:01:00,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:01:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-09 18:01:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 18:01:00,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:00,655 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:00,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:01:00,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:00,856 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:00,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash -103386527, now seen corresponding path program 1 times [2024-11-09 18:01:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:00,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620892489] [2024-11-09 18:01:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:01:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-09 18:01:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-09 18:01:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:01:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620892489] [2024-11-09 18:01:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620892489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562855945] [2024-11-09 18:01:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:00,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:00,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:00,999 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) [2024-11-09 18:01:01,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:01:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:01:01,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:01:01,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 18:01:01,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562855945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:01,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-09 18:01:01,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964245941] [2024-11-09 18:01:01,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:01,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 18:01:01,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:01,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 18:01:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:01:01,146 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:01:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:01,170 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2024-11-09 18:01:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:01:01,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2024-11-09 18:01:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:01,173 INFO L225 Difference]: With dead ends: 60 [2024-11-09 18:01:01,174 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 18:01:01,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:01:01,175 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:01,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 18:01:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 18:01:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-09 18:01:01,181 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 44 [2024-11-09 18:01:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:01,181 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-09 18:01:01,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:01:01,182 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-09 18:01:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 18:01:01,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:01,184 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:01,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:01:01,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:01,389 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:01,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1352748959, now seen corresponding path program 2 times [2024-11-09 18:01:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:01,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461927338] [2024-11-09 18:01:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 18:01:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-09 18:01:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-09 18:01:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 18:01:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461927338] [2024-11-09 18:01:01,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461927338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568236222] [2024-11-09 18:01:01,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:01:01,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:01,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:01,489 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) [2024-11-09 18:01:01,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:01:01,561 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:01:01,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:01,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:01:01,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 18:01:01,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 18:01:01,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568236222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:01,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:01,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 9 [2024-11-09 18:01:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488987877] [2024-11-09 18:01:01,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:01,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 18:01:01,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 18:01:01,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:01:01,653 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 18:01:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:01,678 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-11-09 18:01:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:01:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2024-11-09 18:01:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:01,679 INFO L225 Difference]: With dead ends: 66 [2024-11-09 18:01:01,679 INFO L226 Difference]: Without dead ends: 41 [2024-11-09 18:01:01,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:01:01,680 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:01,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-09 18:01:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-09 18:01:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-09 18:01:01,686 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 56 [2024-11-09 18:01:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:01,687 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-09 18:01:01,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 18:01:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-09 18:01:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 18:01:01,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:01,688 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:01,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:01:01,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:01,892 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:01,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:01,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2089096671, now seen corresponding path program 3 times [2024-11-09 18:01:01,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833548307] [2024-11-09 18:01:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:01,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:01:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:01,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 18:01:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:02,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-09 18:01:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:01:02,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:02,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833548307] [2024-11-09 18:01:02,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833548307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:02,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045230703] [2024-11-09 18:01:02,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:01:02,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:02,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:02,015 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) [2024-11-09 18:01:02,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:01:02,084 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:01:02,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:02,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:01:02,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:01:02,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:01:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045230703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:02,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:02,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-09 18:01:02,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256698101] [2024-11-09 18:01:02,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:02,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:01:02,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:02,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:01:02,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:01:02,151 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:01:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:02,168 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2024-11-09 18:01:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:01:02,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2024-11-09 18:01:02,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:02,169 INFO L225 Difference]: With dead ends: 72 [2024-11-09 18:01:02,169 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 18:01:02,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:01:02,170 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:02,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:02,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 18:01:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-09 18:01:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-09 18:01:02,178 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 60 [2024-11-09 18:01:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:02,179 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-09 18:01:02,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:01:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-09 18:01:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 18:01:02,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:02,181 INFO L215 NwaCegarLoop]: trace histogram [18, 15, 6, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:02,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:01:02,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:02,383 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:02,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 557152834, now seen corresponding path program 4 times [2024-11-09 18:01:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:02,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842053629] [2024-11-09 18:01:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:02,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:01:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:02,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 18:01:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:02,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-09 18:01:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-09 18:01:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:02,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842053629] [2024-11-09 18:01:02,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842053629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:02,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499376239] [2024-11-09 18:01:02,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:01:02,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:02,514 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) [2024-11-09 18:01:02,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:01:02,599 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:01:02,599 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:02,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:01:02,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 152 proven. 6 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-09 18:01:02,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-11-09 18:01:02,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499376239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:02,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:02,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-09 18:01:02,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734069182] [2024-11-09 18:01:02,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:02,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:01:02,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:02,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:01:02,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:01:02,668 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:01:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:02,686 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2024-11-09 18:01:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 18:01:02,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2024-11-09 18:01:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:02,688 INFO L225 Difference]: With dead ends: 73 [2024-11-09 18:01:02,688 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 18:01:02,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:01:02,690 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:02,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:01:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 18:01:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-09 18:01:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:01:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-09 18:01:02,697 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2024-11-09 18:01:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:02,697 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-09 18:01:02,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:01:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-09 18:01:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 18:01:02,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:02,699 INFO L215 NwaCegarLoop]: trace histogram [18, 15, 6, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:02,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:01:02,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:02,900 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:02,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash 200646468, now seen corresponding path program 5 times [2024-11-09 18:01:02,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:02,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123204999] [2024-11-09 18:01:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:02,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:17,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:01:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:19,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 18:01:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:21,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 18:01:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:01:26,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:26,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123204999] [2024-11-09 18:01:26,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123204999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:26,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054224904] [2024-11-09 18:01:26,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:01:26,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:26,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:26,865 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) [2024-11-09 18:01:26,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:01:27,248 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-09 18:01:27,248 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:27,253 WARN L253 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 156 conjuncts are in the unsatisfiable core [2024-11-09 18:01:27,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:27,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:01:31,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:31,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 996 treesize of output 409 [2024-11-09 18:01:35,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:35,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1969 treesize of output 785 [2024-11-09 18:01:36,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:36,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1733 treesize of output 785 [2024-11-09 18:01:38,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:38,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1733 treesize of output 785 [2024-11-09 18:01:39,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:39,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1733 treesize of output 785 [2024-11-09 18:01:40,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:40,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1973 treesize of output 1018 [2024-11-09 18:01:43,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:01:43,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2920 treesize of output 1120