./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bAnd3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/bAnd3.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 afae6e1207f0c06d84ec8e2e2acf76c1c8773d377a1c0ea49ca1b653981c2bfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:37:03,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:37:03,649 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:37:03,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:37:03,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:37:03,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:37:03,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:37:03,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:37:03,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:37:03,681 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:37:03,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:37:03,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:37:03,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:37:03,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:37:03,684 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:37:03,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:37:03,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:37:03,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:37:03,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:37:03,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:37:03,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:37:03,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:37:03,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:37:03,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:37:03,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:37:03,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:37:03,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:37:03,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:37:03,690 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:37:03,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:37:03,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:37:03,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:37:03,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:37:03,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:37:03,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:37:03,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:37:03,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:37:03,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:37:03,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:37:03,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:37:03,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:37:03,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:37:03,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afae6e1207f0c06d84ec8e2e2acf76c1c8773d377a1c0ea49ca1b653981c2bfd [2024-11-16 02:37:03,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:37:03,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:37:03,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:37:03,913 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:37:03,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:37:03,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bAnd3.i [2024-11-16 02:37:05,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:37:05,215 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:37:05,215 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd3.i [2024-11-16 02:37:05,220 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99baa88ec/50e5604476144fc783f364b94677f6ac/FLAGbc0b4c57a [2024-11-16 02:37:05,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99baa88ec/50e5604476144fc783f364b94677f6ac [2024-11-16 02:37:05,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:37:05,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:37:05,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:37:05,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:37:05,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:37:05,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e53177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05, skipping insertion in model container [2024-11-16 02:37:05,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:37:05,809 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd3.i[1302,1315] [2024-11-16 02:37:05,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:37:05,824 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:37:05,865 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bAnd3.i[1302,1315] [2024-11-16 02:37:05,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:37:05,884 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:37:05,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05 WrapperNode [2024-11-16 02:37:05,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:37:05,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:37:05,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:37:05,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:37:05,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,927 INFO L138 Inliner]: procedures = 16, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 75 [2024-11-16 02:37:05,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:37:05,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:37:05,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:37:05,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:37:05,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,940 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,956 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 8, 11]. 52 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 5 writes are split as follows [0, 0, 5]. [2024-11-16 02:37:05,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,963 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:37:05,973 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:37:05,973 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:37:05,973 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:37:05,974 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (1/1) ... [2024-11-16 02:37:05,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:37:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:06,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:37:06,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:37:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:37:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:37:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:37:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:37:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:37:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:37:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:37:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:37:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2024-11-16 02:37:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2024-11-16 02:37:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:37:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:37:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:37:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:37:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:37:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:37:06,106 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:37:06,107 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:37:06,206 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L31: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2024-11-16 02:37:06,214 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-16 02:37:06,214 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:37:06,227 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:37:06,227 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:37:06,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:37:06 BoogieIcfgContainer [2024-11-16 02:37:06,228 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:37:06,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:37:06,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:37:06,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:37:06,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:37:05" (1/3) ... [2024-11-16 02:37:06,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3aebed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:37:06, skipping insertion in model container [2024-11-16 02:37:06,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:37:05" (2/3) ... [2024-11-16 02:37:06,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3aebed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:37:06, skipping insertion in model container [2024-11-16 02:37:06,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:37:06" (3/3) ... [2024-11-16 02:37:06,234 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd3.i [2024-11-16 02:37:06,245 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:37:06,245 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:37:06,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:37:06,286 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;@5567b818, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:37:06,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:37:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 26 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) [2024-11-16 02:37:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 02:37:06,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:06,300 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] [2024-11-16 02:37:06,300 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:06,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1482064718, now seen corresponding path program 1 times [2024-11-16 02:37:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:06,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773923100] [2024-11-16 02:37:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:06,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 02:37:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 02:37:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 02:37:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 02:37:06,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:06,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773923100] [2024-11-16 02:37:06,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773923100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:37:06,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:37:06,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:37:06,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731567860] [2024-11-16 02:37:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:37:06,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:37:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:06,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:37:06,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:37:06,501 INFO L87 Difference]: Start difference. First operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 26 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) 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) [2024-11-16 02:37:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:06,515 INFO L93 Difference]: Finished difference Result 58 states and 79 transitions. [2024-11-16 02:37:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:37:06,517 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 [2024-11-16 02:37:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:06,522 INFO L225 Difference]: With dead ends: 58 [2024-11-16 02:37:06,522 INFO L226 Difference]: Without dead ends: 27 [2024-11-16 02:37:06,524 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 [2024-11-16 02:37:06,526 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:06,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-16 02:37:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-16 02:37:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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) [2024-11-16 02:37:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-16 02:37:06,553 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 29 [2024-11-16 02:37:06,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:06,553 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-16 02:37:06,553 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) [2024-11-16 02:37:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-16 02:37:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:37:06,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:06,555 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] [2024-11-16 02:37:06,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:37:06,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:06,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash -727673735, now seen corresponding path program 1 times [2024-11-16 02:37:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:06,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166212731] [2024-11-16 02:37:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:06,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 02:37:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 02:37:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 02:37:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:37:06,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:06,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166212731] [2024-11-16 02:37:06,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166212731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:06,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138629959] [2024-11-16 02:37:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:06,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:06,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:06,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:37:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:06,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:37:06,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:37:06,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:37:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138629959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:37:06,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:37:06,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 02:37:06,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846646563] [2024-11-16 02:37:06,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:37:06,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:37:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:06,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:37:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:37:06,881 INFO L87 Difference]: Start difference. First operand 27 states and 33 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) [2024-11-16 02:37:06,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:06,894 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-11-16 02:37:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:37:06,894 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 [2024-11-16 02:37:06,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:06,895 INFO L225 Difference]: With dead ends: 52 [2024-11-16 02:37:06,895 INFO L226 Difference]: Without dead ends: 29 [2024-11-16 02:37:06,896 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 [2024-11-16 02:37:06,897 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:06,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-16 02:37:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-16 02:37:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 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) [2024-11-16 02:37:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-16 02:37:06,901 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 34 [2024-11-16 02:37:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:06,901 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-16 02:37:06,902 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) [2024-11-16 02:37:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-16 02:37:06,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:37:06,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:06,903 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] [2024-11-16 02:37:06,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:37:07,103 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 [2024-11-16 02:37:07,104 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:07,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1827079608, now seen corresponding path program 1 times [2024-11-16 02:37:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735372751] [2024-11-16 02:37:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:37:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-16 02:37:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 02:37:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:37:07,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:07,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735372751] [2024-11-16 02:37:07,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735372751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:07,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753443765] [2024-11-16 02:37:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:07,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:07,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:07,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:07,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:37:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:37:07,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:37:07,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:37:07,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753443765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:37:07,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:37:07,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-11-16 02:37:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949616793] [2024-11-16 02:37:07,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:37:07,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:37:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:37:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:37:07,325 INFO L87 Difference]: Start difference. First operand 29 states and 35 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) [2024-11-16 02:37:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:07,342 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2024-11-16 02:37:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:37:07,343 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 [2024-11-16 02:37:07,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:07,344 INFO L225 Difference]: With dead ends: 56 [2024-11-16 02:37:07,344 INFO L226 Difference]: Without dead ends: 35 [2024-11-16 02:37:07,345 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 [2024-11-16 02:37:07,345 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:07,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:07,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-16 02:37:07,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-11-16 02:37:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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) [2024-11-16 02:37:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-16 02:37:07,353 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 36 [2024-11-16 02:37:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:07,354 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-16 02:37:07,354 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) [2024-11-16 02:37:07,354 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-16 02:37:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 02:37:07,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:07,356 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 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] [2024-11-16 02:37:07,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:37:07,558 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 [2024-11-16 02:37:07,559 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:07,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash -5467974, now seen corresponding path program 1 times [2024-11-16 02:37:07,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:07,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056920848] [2024-11-16 02:37:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:07,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:37:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 02:37:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 02:37:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:37:07,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:07,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056920848] [2024-11-16 02:37:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056920848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460612375] [2024-11-16 02:37:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:07,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:07,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:07,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:07,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:37:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:07,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:37:07,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:37:07,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:37:07,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460612375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:37:07,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:37:07,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-16 02:37:07,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118759373] [2024-11-16 02:37:07,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:37:07,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:37:07,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:07,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:37:07,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:37:07,761 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-16 02:37:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:07,774 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-11-16 02:37:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:37:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 48 [2024-11-16 02:37:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:07,776 INFO L225 Difference]: With dead ends: 51 [2024-11-16 02:37:07,776 INFO L226 Difference]: Without dead ends: 33 [2024-11-16 02:37:07,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:37:07,777 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:07,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-16 02:37:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-16 02:37:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2024-11-16 02:37:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-16 02:37:07,786 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 48 [2024-11-16 02:37:07,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:07,787 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-16 02:37:07,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-16 02:37:07,788 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-16 02:37:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 02:37:07,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:07,789 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 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] [2024-11-16 02:37:07,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:37:07,992 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 [2024-11-16 02:37:07,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:07,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:07,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1211907963, now seen corresponding path program 1 times [2024-11-16 02:37:07,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:07,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248959177] [2024-11-16 02:37:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:07,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:37:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 02:37:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 02:37:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:37:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248959177] [2024-11-16 02:37:08,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248959177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876437256] [2024-11-16 02:37:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:08,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:08,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:08,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:08,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:37:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:37:08,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:37:08,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:37:08,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876437256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:08,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:08,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-16 02:37:08,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857129352] [2024-11-16 02:37:08,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:08,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 02:37:08,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:08,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 02:37:08,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 02:37:08,237 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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) [2024-11-16 02:37:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:08,275 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2024-11-16 02:37:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:37:08,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 50 [2024-11-16 02:37:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:08,276 INFO L225 Difference]: With dead ends: 76 [2024-11-16 02:37:08,276 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 02:37:08,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 02:37:08,277 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:08,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 137 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 02:37:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-11-16 02:37:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 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) [2024-11-16 02:37:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-16 02:37:08,282 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 50 [2024-11-16 02:37:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:08,283 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-16 02:37:08,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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) [2024-11-16 02:37:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-16 02:37:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:37:08,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:08,284 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 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] [2024-11-16 02:37:08,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:37:08,484 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 [2024-11-16 02:37:08,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:08,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash 521409786, now seen corresponding path program 2 times [2024-11-16 02:37:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:08,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200051104] [2024-11-16 02:37:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:08,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 02:37:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 02:37:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 02:37:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-16 02:37:08,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:08,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200051104] [2024-11-16 02:37:08,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200051104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:08,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733952359] [2024-11-16 02:37:08,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:37:08,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:08,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:08,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:08,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:37:08,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:37:08,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:08,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:37:08,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-16 02:37:08,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-16 02:37:08,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733952359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:08,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:08,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-16 02:37:08,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423460625] [2024-11-16 02:37:08,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:08,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:37:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:08,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:37:08,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:37:08,797 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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) [2024-11-16 02:37:08,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:08,839 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2024-11-16 02:37:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:37:08,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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 68 [2024-11-16 02:37:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:08,843 INFO L225 Difference]: With dead ends: 92 [2024-11-16 02:37:08,843 INFO L226 Difference]: Without dead ends: 59 [2024-11-16 02:37:08,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:37:08,844 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:08,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-16 02:37:08,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-16 02:37:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 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) [2024-11-16 02:37:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-11-16 02:37:08,851 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 68 [2024-11-16 02:37:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:08,852 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-11-16 02:37:08,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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) [2024-11-16 02:37:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-11-16 02:37:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 02:37:08,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:08,853 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:08,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 02:37:09,053 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 [2024-11-16 02:37:09,054 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:09,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:09,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1670808331, now seen corresponding path program 3 times [2024-11-16 02:37:09,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:09,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500169528] [2024-11-16 02:37:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:09,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:09,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 02:37:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:09,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 02:37:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:09,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 02:37:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 02:37:09,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500169528] [2024-11-16 02:37:09,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500169528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585411469] [2024-11-16 02:37:09,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:37:09,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:09,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:09,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:09,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:37:09,234 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:37:09,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:09,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:37:09,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 02:37:09,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 02:37:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585411469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:09,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:09,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-16 02:37:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292456942] [2024-11-16 02:37:09,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:09,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 02:37:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 02:37:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:37:09,297 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-16 02:37:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:09,325 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2024-11-16 02:37:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:37:09,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 82 [2024-11-16 02:37:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:09,327 INFO L225 Difference]: With dead ends: 116 [2024-11-16 02:37:09,327 INFO L226 Difference]: Without dead ends: 83 [2024-11-16 02:37:09,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:37:09,328 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 52 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:09,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 102 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-16 02:37:09,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-16 02:37:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 78 states have internal predecessors, (93), 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) [2024-11-16 02:37:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2024-11-16 02:37:09,335 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 82 [2024-11-16 02:37:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:09,336 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2024-11-16 02:37:09,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-11-16 02:37:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2024-11-16 02:37:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 02:37:09,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:09,337 INFO L215 NwaCegarLoop]: trace histogram [21, 18, 18, 18, 11, 10, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:09,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:37:09,541 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 [2024-11-16 02:37:09,542 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:09,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:09,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1076203267, now seen corresponding path program 4 times [2024-11-16 02:37:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:09,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272539241] [2024-11-16 02:37:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:09,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:09,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 02:37:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:09,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 02:37:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:09,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 02:37:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2024-11-16 02:37:09,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:09,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272539241] [2024-11-16 02:37:09,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272539241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:09,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362160131] [2024-11-16 02:37:09,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:37:09,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:09,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:09,788 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) [2024-11-16 02:37:09,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:37:09,887 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:37:09,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:09,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:37:09,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 342 proven. 72 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2024-11-16 02:37:09,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 418 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 02:37:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362160131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:10,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:10,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-16 02:37:10,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785013546] [2024-11-16 02:37:10,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:10,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 02:37:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 02:37:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:37:10,132 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand has 27 states, 27 states have (on average 4.037037037037037) internal successors, (109), 27 states have internal predecessors, (109), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:10,210 INFO L93 Difference]: Finished difference Result 192 states and 251 transitions. [2024-11-16 02:37:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 02:37:10,211 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.037037037037037) internal successors, (109), 27 states have internal predecessors, (109), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 130 [2024-11-16 02:37:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:10,212 INFO L225 Difference]: With dead ends: 192 [2024-11-16 02:37:10,213 INFO L226 Difference]: Without dead ends: 133 [2024-11-16 02:37:10,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:37:10,215 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 152 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:10,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 200 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:37:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-16 02:37:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-16 02:37:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.2421875) internal successors, (159), 128 states have internal predecessors, (159), 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) [2024-11-16 02:37:10,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2024-11-16 02:37:10,232 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 130 [2024-11-16 02:37:10,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:10,232 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2024-11-16 02:37:10,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.037037037037037) internal successors, (109), 27 states have internal predecessors, (109), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:10,233 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2024-11-16 02:37:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-16 02:37:10,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:10,234 INFO L215 NwaCegarLoop]: trace histogram [45, 42, 42, 42, 12, 11, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:10,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 02:37:10,438 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 [2024-11-16 02:37:10,440 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:10,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:10,441 INFO L85 PathProgramCache]: Analyzing trace with hash -873196980, now seen corresponding path program 5 times [2024-11-16 02:37:10,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:10,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837857267] [2024-11-16 02:37:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:10,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:10,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 02:37:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:10,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-16 02:37:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:10,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-11-16 02:37:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 3720 trivial. 0 not checked. [2024-11-16 02:37:10,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:10,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837857267] [2024-11-16 02:37:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837857267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:10,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538219247] [2024-11-16 02:37:10,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:37:10,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:10,746 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) [2024-11-16 02:37:10,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:37:11,010 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-16 02:37:11,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:11,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:37:11,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 1686 proven. 392 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2024-11-16 02:37:11,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 0 proven. 2082 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-16 02:37:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538219247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:11,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:11,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 44 [2024-11-16 02:37:11,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998389783] [2024-11-16 02:37:11,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:11,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 02:37:11,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 02:37:11,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:37:11,653 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand has 44 states, 44 states have (on average 3.977272727272727) internal successors, (175), 44 states have internal predecessors, (175), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:11,834 INFO L93 Difference]: Finished difference Result 338 states and 453 transitions. [2024-11-16 02:37:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-16 02:37:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.977272727272727) internal successors, (175), 44 states have internal predecessors, (175), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 228 [2024-11-16 02:37:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:11,837 INFO L225 Difference]: With dead ends: 338 [2024-11-16 02:37:11,837 INFO L226 Difference]: Without dead ends: 231 [2024-11-16 02:37:11,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:37:11,840 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 368 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:11,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 372 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:37:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-16 02:37:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-16 02:37:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 226 states have (on average 1.2787610619469028) internal successors, (289), 226 states have internal predecessors, (289), 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) [2024-11-16 02:37:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 295 transitions. [2024-11-16 02:37:11,860 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 295 transitions. Word has length 228 [2024-11-16 02:37:11,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:11,861 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 295 transitions. [2024-11-16 02:37:11,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.977272727272727) internal successors, (175), 44 states have internal predecessors, (175), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 295 transitions. [2024-11-16 02:37:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-16 02:37:11,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:11,866 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 13, 12, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:11,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:37:12,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-16 02:37:12,067 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:12,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash -650647573, now seen corresponding path program 6 times [2024-11-16 02:37:12,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:12,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083496507] [2024-11-16 02:37:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:12,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 02:37:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:12,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 02:37:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:12,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-11-16 02:37:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16740 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 16584 trivial. 0 not checked. [2024-11-16 02:37:12,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:12,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083496507] [2024-11-16 02:37:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083496507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562708056] [2024-11-16 02:37:12,558 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:37:12,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:12,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:12,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:12,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:37:12,680 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:37:12,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:12,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:37:12,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16740 backedges. 7452 proven. 6 refuted. 0 times theorem prover too weak. 9282 trivial. 0 not checked. [2024-11-16 02:37:12,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16740 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16734 trivial. 0 not checked. [2024-11-16 02:37:12,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562708056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:12,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:12,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2024-11-16 02:37:12,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504996868] [2024-11-16 02:37:12,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:12,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:37:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:12,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:37:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:37:12,788 INFO L87 Difference]: Start difference. First operand 231 states and 295 transitions. Second operand has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:12,826 INFO L93 Difference]: Finished difference Result 444 states and 576 transitions. [2024-11-16 02:37:12,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:37:12,829 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 422 [2024-11-16 02:37:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:12,830 INFO L225 Difference]: With dead ends: 444 [2024-11-16 02:37:12,830 INFO L226 Difference]: Without dead ends: 241 [2024-11-16 02:37:12,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:37:12,832 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:12,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-16 02:37:12,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2024-11-16 02:37:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 236 states have (on average 1.2669491525423728) internal successors, (299), 236 states have internal predecessors, (299), 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) [2024-11-16 02:37:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 305 transitions. [2024-11-16 02:37:12,838 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 305 transitions. Word has length 422 [2024-11-16 02:37:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:12,838 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 305 transitions. [2024-11-16 02:37:12,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 305 transitions. [2024-11-16 02:37:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-16 02:37:12,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:12,842 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 14, 13, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:12,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 02:37:13,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:37:13,043 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:13,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1632395054, now seen corresponding path program 7 times [2024-11-16 02:37:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378599707] [2024-11-16 02:37:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:13,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:13,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-16 02:37:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:13,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-16 02:37:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:13,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-11-16 02:37:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:37:13,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:13,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378599707] [2024-11-16 02:37:13,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378599707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:13,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954611369] [2024-11-16 02:37:13,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:37:13,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:13,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:13,501 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:13,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:37:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:13,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:37:13,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:37:13,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:37:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954611369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:13,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:13,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-16 02:37:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100590746] [2024-11-16 02:37:13,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:13,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 02:37:13,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 02:37:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:37:13,999 INFO L87 Difference]: Start difference. First operand 241 states and 305 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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) [2024-11-16 02:37:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:14,030 INFO L93 Difference]: Finished difference Result 482 states and 624 transitions. [2024-11-16 02:37:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 02:37:14,031 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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 432 [2024-11-16 02:37:14,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:14,032 INFO L225 Difference]: With dead ends: 482 [2024-11-16 02:37:14,032 INFO L226 Difference]: Without dead ends: 271 [2024-11-16 02:37:14,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:37:14,034 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:14,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-16 02:37:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-16 02:37:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 266 states have (on average 1.236842105263158) internal successors, (329), 266 states have internal predecessors, (329), 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) [2024-11-16 02:37:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 335 transitions. [2024-11-16 02:37:14,042 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 335 transitions. Word has length 432 [2024-11-16 02:37:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:14,042 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 335 transitions. [2024-11-16 02:37:14,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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) [2024-11-16 02:37:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 335 transitions. [2024-11-16 02:37:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-16 02:37:14,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:14,047 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 29, 28, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:14,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:37:14,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 02:37:14,253 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:14,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:14,253 INFO L85 PathProgramCache]: Analyzing trace with hash -775549345, now seen corresponding path program 8 times [2024-11-16 02:37:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:14,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870189734] [2024-11-16 02:37:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:14,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:15,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 02:37:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:15,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-11-16 02:37:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:15,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-11-16 02:37:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17432 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:37:15,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:15,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870189734] [2024-11-16 02:37:15,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870189734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:15,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343134498] [2024-11-16 02:37:15,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:37:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:15,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:15,183 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:15,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:37:15,408 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:37:15,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:15,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 02:37:15,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 17432 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:37:15,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17432 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:37:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343134498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:16,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:16,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-16 02:37:16,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192986467] [2024-11-16 02:37:16,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:16,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-16 02:37:16,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-16 02:37:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:37:16,341 INFO L87 Difference]: Start difference. First operand 271 states and 335 transitions. Second operand has 61 states, 61 states have (on average 2.4262295081967213) internal successors, (148), 61 states have internal predecessors, (148), 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) [2024-11-16 02:37:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:16,393 INFO L93 Difference]: Finished difference Result 542 states and 699 transitions. [2024-11-16 02:37:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-16 02:37:16,393 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.4262295081967213) internal successors, (148), 61 states have internal predecessors, (148), 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 462 [2024-11-16 02:37:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:16,395 INFO L225 Difference]: With dead ends: 542 [2024-11-16 02:37:16,395 INFO L226 Difference]: Without dead ends: 331 [2024-11-16 02:37:16,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:37:16,396 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:16,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:37:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-16 02:37:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2024-11-16 02:37:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 326 states have (on average 1.1932515337423313) internal successors, (389), 326 states have internal predecessors, (389), 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) [2024-11-16 02:37:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 395 transitions. [2024-11-16 02:37:16,402 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 395 transitions. Word has length 462 [2024-11-16 02:37:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:16,403 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 395 transitions. [2024-11-16 02:37:16,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.4262295081967213) internal successors, (148), 61 states have internal predecessors, (148), 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) [2024-11-16 02:37:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 395 transitions. [2024-11-16 02:37:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-11-16 02:37:16,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:16,405 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 59, 58, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:16,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 02:37:16,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 02:37:16,610 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:16,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1881586049, now seen corresponding path program 9 times [2024-11-16 02:37:16,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:16,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327144333] [2024-11-16 02:37:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:16,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:18,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 02:37:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:18,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-11-16 02:37:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:18,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2024-11-16 02:37:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 20042 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:37:18,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:18,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327144333] [2024-11-16 02:37:18,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327144333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:18,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125912897] [2024-11-16 02:37:18,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:37:18,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:18,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:18,924 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:18,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:37:19,114 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-16 02:37:19,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:19,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:37:19,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20042 backedges. 7452 proven. 42 refuted. 0 times theorem prover too weak. 12548 trivial. 0 not checked. [2024-11-16 02:37:19,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 20042 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 20000 trivial. 0 not checked. [2024-11-16 02:37:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125912897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:19,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:19,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 9, 9] total 75 [2024-11-16 02:37:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934960093] [2024-11-16 02:37:19,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:19,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-16 02:37:19,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-16 02:37:19,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1949, Invalid=3601, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 02:37:19,519 INFO L87 Difference]: Start difference. First operand 331 states and 395 transitions. Second operand has 75 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:19,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:19,613 INFO L93 Difference]: Finished difference Result 560 states and 696 transitions. [2024-11-16 02:37:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-16 02:37:19,614 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 522 [2024-11-16 02:37:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:19,616 INFO L225 Difference]: With dead ends: 560 [2024-11-16 02:37:19,616 INFO L226 Difference]: Without dead ends: 349 [2024-11-16 02:37:19,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 1036 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1949, Invalid=3601, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 02:37:19,618 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:19,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:37:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-16 02:37:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2024-11-16 02:37:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 344 states have (on average 1.183139534883721) internal successors, (407), 344 states have internal predecessors, (407), 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) [2024-11-16 02:37:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 413 transitions. [2024-11-16 02:37:19,628 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 413 transitions. Word has length 522 [2024-11-16 02:37:19,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:19,629 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 413 transitions. [2024-11-16 02:37:19,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:19,629 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 413 transitions. [2024-11-16 02:37:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-16 02:37:19,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:19,633 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 60, 59, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:19,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 02:37:19,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:37:19,834 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:19,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2057364168, now seen corresponding path program 10 times [2024-11-16 02:37:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917022094] [2024-11-16 02:37:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:21,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 02:37:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:21,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-11-16 02:37:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:21,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-11-16 02:37:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 20328 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 16788 trivial. 0 not checked. [2024-11-16 02:37:21,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:21,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917022094] [2024-11-16 02:37:21,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917022094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:21,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702279281] [2024-11-16 02:37:21,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:37:21,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:21,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:21,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:21,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:37:22,288 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:37:22,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:37:22,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:37:22,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:37:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20328 backedges. 7450 proven. 1800 refuted. 0 times theorem prover too weak. 11078 trivial. 0 not checked. [2024-11-16 02:37:23,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:37:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20328 backedges. 7450 proven. 1800 refuted. 0 times theorem prover too weak. 11078 trivial. 0 not checked. [2024-11-16 02:37:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702279281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:37:24,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:37:24,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 33, 33] total 124 [2024-11-16 02:37:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941860134] [2024-11-16 02:37:24,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:37:24,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-16 02:37:24,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:37:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-16 02:37:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-16 02:37:24,469 INFO L87 Difference]: Start difference. First operand 349 states and 413 transitions. Second operand has 124 states, 124 states have (on average 3.217741935483871) internal successors, (399), 124 states have internal predecessors, (399), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:37:24,976 INFO L93 Difference]: Finished difference Result 770 states and 997 transitions. [2024-11-16 02:37:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-16 02:37:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 3.217741935483871) internal successors, (399), 124 states have internal predecessors, (399), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 540 [2024-11-16 02:37:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:37:24,979 INFO L225 Difference]: With dead ends: 770 [2024-11-16 02:37:24,979 INFO L226 Difference]: Without dead ends: 543 [2024-11-16 02:37:24,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1024 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-16 02:37:24,982 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1244 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:37:24,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 658 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:37:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-16 02:37:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-11-16 02:37:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 538 states have (on average 1.2360594795539033) internal successors, (665), 538 states have internal predecessors, (665), 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) [2024-11-16 02:37:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 671 transitions. [2024-11-16 02:37:24,993 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 671 transitions. Word has length 540 [2024-11-16 02:37:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:37:24,994 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 671 transitions. [2024-11-16 02:37:24,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 3.217741935483871) internal successors, (399), 124 states have internal predecessors, (399), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:37:24,994 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 671 transitions. [2024-11-16 02:37:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2024-11-16 02:37:24,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:37:24,999 INFO L215 NwaCegarLoop]: trace histogram [189, 186, 186, 186, 61, 60, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:37:25,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 02:37:25,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 02:37:25,200 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:37:25,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:37:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash 6369159, now seen corresponding path program 11 times [2024-11-16 02:37:25,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:37:25,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912509447] [2024-11-16 02:37:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:37:25,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:37:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:27,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-16 02:37:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:27,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-11-16 02:37:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:27,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2024-11-16 02:37:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:37:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 73824 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 70164 trivial. 0 not checked. [2024-11-16 02:37:27,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:37:27,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912509447] [2024-11-16 02:37:27,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912509447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:37:27,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741302520] [2024-11-16 02:37:27,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:37:27,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:37:27,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:37:27,848 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:37:27,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process